diff options
author | R. Belmont <rb6502@users.noreply.github.com> | 2013-11-25 03:46:58 +0000 |
---|---|---|
committer | R. Belmont <rb6502@users.noreply.github.com> | 2013-11-25 03:46:58 +0000 |
commit | f499244d53ccb07ddf500c1393ae90ea9ad2e201 (patch) | |
tree | eda39407538681d86f46145a13fce641a37e34cd | |
parent | d05677b0e6768bff43388e648e07c57f6ead502a (diff) |
(MESS) DEC Rainbow updates: [Bavarese]
- rainbow.c: wired watchdog (MHFLU) and W18 (DSR). Dangerous W90 (PSU jumper) on PCB documented. Pallette handling changed, moved screen blank routine to vtvideo.c
- dec_lk201.c: keyboard matrix from LK-201-AA (VCB02) (original 8051 version)
- Vtvideo.c: monochrome palette with 4 intensities (instead of 3). Ironed out attribute bugs (-> truth table from VT100). Double-width, double-height corrected
-rw-r--r-- | src/mess/drivers/rainbow.c | 212 | ||||
-rw-r--r-- | src/mess/machine/dec_lk201.c | 93 | ||||
-rw-r--r-- | src/mess/video/vtvideo.c | 378 | ||||
-rw-r--r-- | src/mess/video/vtvideo.h | 5 |
4 files changed, 509 insertions, 179 deletions
diff --git a/src/mess/drivers/rainbow.c b/src/mess/drivers/rainbow.c index 5359553a0f2..92d73f915f9 100644 --- a/src/mess/drivers/rainbow.c +++ b/src/mess/drivers/rainbow.c @@ -6,32 +6,48 @@ STATE AS OF NOVEMBER 2013 -------------------------- - - FATAL: keyboard emulation needs love (inhibits the system from booting with ERROR 50 on cold or ERROR 13 on warm boot). - - NOT WORKING: serial (ERROR 60) - - NOT WORKING: printer interface (ERROR 40). + - FATAL: keyboard emulation incomplete (inhibits the system from booting with ERROR 50 on cold or ERROR 13 on warm boot). + - NOT WORKING: serial (ERROR 60). + - NOT WORKING: printer interface (ERROR 40). Like error 60 not mission-critical. - - NON-CRITICAL: no code for W18 (DSR) jumper. W90 jumper probably not relevant for emulation (VBIAS pin 2 => to unknown register). - - NON-CRITICAL: watchdog logic not implemented. MHFLU - ERROR 16 indicated hardware problems or (most often) software crashes on real hardware. + - NON-CRITICAL: watchdog logic (triggered after 108 ms without interrupts) still not exactly by the book. + + Timer is reset by TWO sources: the VERT INT L from the DC012, or the MHFU ENB L from the enable flip-flop. + The MHFU gets active if the 8088 has not acknowledged a video processor interrupt within approx. 108 milliseconds. + + BIOS assumes a power-up reset if MHFU detection is disabled - and assumes a MHFU reset if MHFU detection is ENABLED. + Therefore a 'warm boot' within MESS (F3) causes ERROR 16. - SHOULD BE IMPLEMENTED AS SLOT DEVICES (for now, DIP settings affect 'system_parameter_r' only and are disabled): * Color graphics option (uses NEC upd7220 GDC) * Extended communication option (same as BUNDLE_OPTION ?) - OTHER UPGRADES (NEC_V20 should be easy, the TURBOW is harder to come by) - * Suitable Solutions TURBOW286 (12 Mhz, 68-pin, low power AMD N80L286-12 and WAYLAND/EDSUN EL286-88-10-B ( 80286 to 8088 Processor Signal Converter ) - / replacement for main cpu with on-board DC 7174 or DT 7174 (?) RTC and changed BOOT ROM labeled 'TBSS1.3 - 3ED4'). + * Suitable Solutions TURBOW286: 12 Mhz, 68-pin, low power AMD N80L286-12 and WAYLAND/EDSUN EL286-88-10-B ( 80286 to 8088 Processor Signal Converter ) + plus DC 7174 or DT 7174 (barely readable). Add-on card, replaces main 8088 cpu (via ribbon cable). Changed BOOT ROM labeled 'TBSS1.3 - 3ED4'. * NEC_V20 (requires modded BOOT ROM because of - at least 2 - hard coded timing loops): 100A: 100B/100+: 100B+ ALTERNATE RECOMMENDATION (fixes RAM size auto-detection problems when V20 is in place. - Tested on a 30+ year old live machine. Your mileage may vary) + Tested on a 30+ year old live machine. Your mileage may vary) + Location Data Location Data Loc.|Data - 00C6 46 [ increases 'wait for Z80' from approx. 27,5 ms (old value 40) to 30,5 ms ] - 0303 00 [ disable CHECKSUM ] + .... .. .... .. ------------------ 00C6 46 [ increases 'wait for Z80' from approx. 27,5 ms (old value 40) to 30,5 ms ] + .... .. .... .. ------------------ 0303 00 [ disable CHECKSUM ] 043F 64 072F 64 <-----------------> 072F 73 [ increases minimum cycle time from 2600 (64) to 3000 ms (73) ] - 067D 20 0B36 20 <-----------------> 0B36 20 [ use a value of 20 for NEC_V20 - as in the initial patch. Changes cause VFR - ERROR 10. ] + 067D 20 0B36 20 <-----------------> 0B36 20 [ USE A VALUE OF 20 FOR THE NEC - as in the initial patch! CHANGES CAUSE VFR-ERROR 10 ] 1FFE 2B 3FFE 1B (BIOS CHECKSUM) 1FFF 70 3FFF 88 (BIOS CHECKSUM) + => the 'leaked' DOS 3.10 Beta -for Rainbow- 'should not be used' on rigs with NEC V20. It possibly wasn't tested, but boots and runs well. + => on the NEC, auto detection (of option RAM) fails with the original V20 patch (above, left) + Expect RAM related system crashes after swapping CPUs and altering physical RAM _afterwards_. + Hard coded CPU loops are to blame. Try values from the alternate patch (right). + => AAD/AAM - Intel 8088 honors the second byte (operand), NEC V20 ignores it and always uses base 0Ah (10). + => UNDOCUMENTED: NEC V20 does not have "POP CS" (opcode 0F). There are more differences (opcode D6; the 2 byte POP: 8F Cx; FF Fx instructions) + Commercial programs had to be patched back then (as was the case with Loderunner for PC). + => NEW OPCODES: REPC, REPNC, CHKIND, PREPARE, DISPOSE; BCD string operations (ADD4S, CMP4S, SUB4S), bit-ops (NOT, SET, TEST, ROL4, ROR4) + WARNING: undoc'd opcodes, INS, EXT and 8080 behaviour are unemulated yet! MESS' CPU source has up-to-date info. + Meaning of Diagnostics LEDs (from PC100ESV1.PDF found, e.g., on ftp://ftp.update.uu.se/pub/rainbow/doc/rainbow-docs/ @@ -95,9 +111,9 @@ PCB # 5416206 / 5016205-01C1: 7-6-5-4 |3-2-1 DIAGNOSTIC-LEDs |J3 | |J2 | |J1 | |------|----8088|Z80-|--|VIDEO|-|PRINTER|-|SERIAL|---| -| 2 x 64 K |/KBD.| | -| R A M NEC D7201C |P|[W90]| -| |O| | +| 2 x 64 K |/KBD.| !!!!!| +| R A M NEC D7201C |P|!W90!| +| |O|!!!!!| | [W6] ROM 1 INTEL 8088 |W| | | (23-020e5-00) |E| | | |R| | @@ -119,18 +135,35 @@ NOTES W5 + W6 are out when 16K x 8 EPROMS are used / W5 + W6 installed => 32 K x 8 EPROMs (pin 27 = A14) -W13, W14, W15, W18, W90 = for manufacturing tests. +W13, W14, W15, W18 = for manufacturing tests. => W13 - W15 affect diagnostic read register (port $0a) => W18 pulls DSR to ground and affects 8251A - port $11 (bit 7) - NOTE: THERE IS NO CODE TO PULL DSR YET. -=> W90 connects pin 2 (Voltage Bias on PWR connector J8) with the communications control register -(SH1 - IOWR4 L line according to page 21 of the DEC-100-B field manual) -SEEN ON SCHEMATICS - NOT PRESENT ON THIS PCB: -W16 pulls J2 printer port pin 1 to GND when set (otherwise pin unconnected) -W17 pulls J1 serial port pin 1 to GND when set (otherwise pin unconnected) +!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +!! DO NOT SHORT JUMPER / CONNECTOR [W90] ON LIVE HARDWARE !! +!! !! +!! WARNING: CIRCUIT DAMAGE could occur if this jumper is !! +!! set by end users. See PDF document AA-V523A-TV. !! +!! !! +!! W90 connects to pin 2 (Voltage Bias on PWR connector J8)!! +!! and is designed FOR ===> FACTORY TESTS OF THE PSU <=== !! +!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + +WIRE CONNECTORS - SEEN ON SCHEMATICS - NOT PRESENT ON DEC-100 B (-A only?): +W16 pulls J2 printer port pin 1 to GND when set (chassis to logical GND). +W17 pulls J1 serial port pin 1 to GND when set (chassis to logical GND). ****************************************************************************/ +/* +HARD DISC SIZES AND LIMITS + HARDWARE: the Rainbow winchester controller has a built-in limit of 8 heads and 1024 cylinders (67 MB). Standard geometry is 4 surfaces. + + SOFTWARE: the original DEC boot loader (and FDISK from DOS 3.10) initially allowed a maximum hard disc size of 20 MB. + - DOS 3 has a 1024 cylinder limit (32 MB). + - the custom boot loader that comes with 'WUTIL 3.2' stretches limits to 117 MB and 8 surfaces. +*/ + + #include "emu.h" #include "cpu/i86/i86.h" #include "cpu/z80/z80.h" @@ -144,8 +177,6 @@ W17 pulls J1 serial port pin 1 to GND when set (otherwise pin unconnected) #include "rainbow.lh" // BEZEL - LAYOUT with LEDs for diag 1-7, keyboard 8-11 and floppy 20-21 -#define DEC_B_NVMEM_SIZE (256) - class rainbow_state : public driver_device { public: @@ -159,6 +190,7 @@ public: m_inp6(*this, "FLOPPY CONTROLLER"), m_inp7(*this, "GRAPHICS OPTION"), m_inp8(*this, "MEMORY PRESENT"), + m_inp9(*this, "MONITOR TYPE"), m_beep(*this, "beeper"), m_crtc(*this, "vt100_video"), @@ -183,6 +215,7 @@ public: required_ioport m_inp6; required_ioport m_inp7; required_ioport m_inp8; + required_ioport m_inp9; required_device<beep_device> m_beep; @@ -231,13 +264,14 @@ public: DECLARE_WRITE8_MEMBER(z80_diskcontrol_write_w); DECLARE_READ8_MEMBER(system_parameter_r); + DECLARE_READ_LINE_MEMBER(dsr_r); + DECLARE_READ_LINE_MEMBER(kbd_rx); DECLARE_WRITE_LINE_MEMBER(kbd_tx); DECLARE_WRITE_LINE_MEMBER(kbd_rxready_w); DECLARE_WRITE_LINE_MEMBER(kbd_txready_w); bool m_SCREEN_BLANK; - bool m_COLDBOOT; bool m_zflip; // Z80 alternate memory map with A15 inverted bool m_z80_halted; @@ -246,12 +280,15 @@ public: int m_KBD; int m_beep_counter; + int MHFU_counter; + private: UINT8 m_z80_private[0x800]; // Z80 private 2K UINT8 m_z80_mailbox, m_8088_mailbox; void update_kbd_irq(); virtual void machine_reset(); + void MHFU_reset(); public: UINT32 screen_update_rainbow(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); INTERRUPT_GEN_MEMBER(vblank_irq); @@ -262,7 +299,6 @@ public: void rainbow_state::machine_start() { m_SCREEN_BLANK = false; - m_COLDBOOT = true; save_item(NAME(m_z80_private)); save_item(NAME(m_z80_mailbox)); @@ -315,11 +351,11 @@ static ADDRESS_MAP_START( rainbow8088_map, AS_PROGRAM, 8, rainbow_state) // - PC-100 A might have had a smaller (NV-)RAM (*) // - ED000 - ED0FF is the area the _DEC-100-B BIOS_ accesses - and checks. - // - Specs claim that the CPU has direct access to volatile RAM only. + // - Specs say that the CPU has direct access to volatile RAM only. // So NVRAM is hidden now and loads & saves are triggered within the - // 'diagnostic_w' handler (like on real hardware). + // 'diagnostic_w' handler (similar to real hardware). - // - Address bits 8-12 are ignored (-> AM_MIRROR). Remove for debugging. + // - Address bits 8-12 are ignored (-> AM_MIRROR). AM_RANGE(0xed000, 0xed0ff) AM_RAM AM_SHARE("vol_ram") AM_MIRROR(0x1f00) AM_RANGE(0xed100, 0xed1ff) AM_RAM AM_SHARE("nvram") @@ -341,8 +377,9 @@ static ADDRESS_MAP_START( rainbow8088_io , AS_IO, 8, rainbow_state) AM_RANGE (0x08, 0x08) AM_READ(system_parameter_r) AM_RANGE (0x0a, 0x0a) AM_READWRITE(diagnostic_r, diagnostic_w) - // 0x0C Video processor DC012 - AM_RANGE (0x0c, 0x0c) AM_DEVWRITE("vt100_video", rainbow_video_device, dc012_w) + + // 0x0C Video processor DC012 + AM_RANGE (0x0c, 0x0c) AM_DEVWRITE("vt100_video", rainbow_video_device, dc012_w) AM_RANGE(0x10, 0x10) AM_DEVREADWRITE("kbdser", i8251_device, data_r, data_w) AM_RANGE(0x11, 0x11) AM_DEVREADWRITE("kbdser", i8251_device, status_r, control_w) @@ -371,12 +408,28 @@ ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( rainbow ) + PORT_START("MONITOR TYPE") + PORT_DIPNAME( 0x03, 0x03, "MONOCHROME MONITOR") + PORT_DIPSETTING( 0x01, "PAPER WHITE" ) + PORT_DIPSETTING( 0x02, "GREEN" ) + PORT_DIPSETTING( 0x03, "AMBER" ) + PORT_START("FLOPPY CONTROLLER") PORT_DIPNAME( 0x02, 0x02, "FLOPPY CONTROLLER") PORT_TOGGLE PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) PORT_DIPSETTING( 0x02, DEF_STR( On ) ) - PORT_START("MEMORY PRESENT") + PORT_START("GRAPHICS OPTION") + PORT_DIPNAME( 0x00, 0x00, "GRAPHICS OPTION") PORT_TOGGLE + PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x04, DEF_STR( On ) ) + + PORT_START("BUNDLE OPTION") + PORT_DIPNAME( 0x00, 0x00, "BUNDLE OPTION") PORT_TOGGLE + PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x01, DEF_STR( On ) ) + + PORT_START("MEMORY PRESENT") PORT_DIPNAME( 0xF000, 0x2000, "MEMORY PRESENT") PORT_DIPSETTING( 0x2000, "128 K (BOARD DEFAULT)" ) // NOTE: 0x2000 hard coded in 'system_parameter_r' PORT_DIPSETTING( 0x3000, "192 K (MEMORY OPTION)" ) @@ -392,36 +445,35 @@ static INPUT_PORTS_START( rainbow ) PORT_DIPSETTING( 0xD000, "832 K (MEMORY OPTION)" ) PORT_DIPSETTING( 0xE000, "896 K (MEMORY OPTION)" ) - PORT_START("GRAPHICS OPTION") - PORT_DIPNAME( 0x00, 0x00, "GRAPHICS OPTION") PORT_TOGGLE - PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) - PORT_DIPSETTING( 0x04, DEF_STR( On ) ) - PORT_START("BUNDLE OPTION") - PORT_DIPNAME( 0x00, 0x00, "BUNDLE OPTION") PORT_TOGGLE - PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) - PORT_DIPSETTING( 0x01, DEF_STR( On ) ) - PORT_START("W13") - PORT_DIPNAME( 0x02, 0x02, "W13") PORT_TOGGLE + PORT_DIPNAME( 0x02, 0x02, "W13 (FACTORY TEST A, LEAVE OFF)") PORT_TOGGLE PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("W14") - PORT_DIPNAME( 0x04, 0x04, "W14") PORT_TOGGLE + PORT_DIPNAME( 0x04, 0x04, "W14 (FACTORY TEST B, LEAVE OFF)") PORT_TOGGLE PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("W15") - PORT_DIPNAME( 0x08, 0x08, "W15") PORT_TOGGLE + PORT_DIPNAME( 0x08, 0x08, "W15 (FACTORY TEST C, LEAVE OFF)") PORT_TOGGLE PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + // DSR = 1 when switch is OFF - see i8251.c (status_r) PORT_START("W18") - PORT_DIPNAME( 0x00, 0x04, "W18") PORT_TOGGLE - PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) - PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x01, 0x00, "W18 (FACTORY TEST D, LEAVE OFF) (8251A: DSR)") PORT_TOGGLE + PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x01, DEF_STR( On ) ) INPUT_PORTS_END +void rainbow_state::MHFU_reset() +{ + MHFU_counter = 530; // 528 = 110ms +} + void rainbow_state::machine_reset() { + MHFU_reset(); + m_z80->set_input_line(INPUT_LINE_HALT, ASSERT_LINE); m_zflip = true; @@ -454,15 +506,24 @@ void rainbow_state::machine_reset() UINT32 rainbow_state::screen_update_rainbow(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { - if (m_SCREEN_BLANK) - bitmap.fill(get_black_pen(machine()), cliprect); - else - m_crtc->video_update(bitmap, cliprect); + m_crtc->palette_select( m_inp9->read() ); + + if ( m_SCREEN_BLANK ) + m_crtc->video_blanking(bitmap, cliprect); + else + m_crtc->video_update(bitmap, cliprect); return 0; } -// Simulate floating bus for initial RAM detection in low ROM. -// WANTED: is a cleaner, more compatible way feasible? +// It is no longer possible to key in the RAM size on the 100-B. +// The DEC-100-B boot ROM probes until a 'flaky' area is found (around F400:xxxx). + +// Unexpected low RAM sizes are an indication of option RAM (at worst: 128 K on board) failure. +// While motherboard errors often render the system unbootable, bad option RAM (> 128 K) +// can be narrowed down with a diagnostic disk and codes from the 'Pocket Service Guide' +// EK-PC100-PS-002 (APPENDIX B.2.2); pc100ps2.pdf + +// Simulate floating bus for initial RAM detection: READ8_MEMBER(rainbow_state::floating_bus_r) { if ( m_maincpu->state_int(I8086_CS) != 0xF400) @@ -555,17 +616,15 @@ READ8_MEMBER(rainbow_state::system_parameter_r) } READ8_MEMBER(rainbow_state::comm_control_r) -{ - // Our simple COLDBOOT flag is adequate for the initial MHFU test (at BIOS location 00A8). - - // TODO: on real hardware, MHFU detection is disabled BY WRITING TO 0x10c (=> BIOS assumes power-up reset) - // MHFU is enabled by writing to 0x0c. - if (m_COLDBOOT) - { m_COLDBOOT = 0; - return ( 0x20 ); // bit 5 = watchdog detect. - } else { - return ( 0x00 ); // ERROR 16 is displayed = watchdog triggered - } +{ +/* +--> What the specs says on how MHFU detection is disabled: + // 1. by first disabling interrupts with CLI + // 2. by writing 0x00 to port 0x10C (handled by 'dc012_w' in vtvideo) + // (3.) MHFU is re-enabled by writing to 0x0c (or automatically after STI - when under BIOS control ?) +*/ + return ( ( m_crtc->dc012_MHFU() << 5) // shift status of DC012 - MHFU flag to bit pos.5 + ); } WRITE8_MEMBER(rainbow_state::comm_control_w) @@ -713,6 +772,8 @@ READ8_MEMBER( rainbow_state::read_video_ram_r ) INTERRUPT_GEN_MEMBER(rainbow_state::vblank_irq) { device.execute().set_input_line_and_vector(INPUT_LINE_INT0, ASSERT_LINE, 0x20); + + MHFU_reset(); } WRITE8_MEMBER( rainbow_state::clear_video_interrupt ) @@ -766,6 +827,11 @@ WRITE8_MEMBER( rainbow_state::diagnostic_w ) } +READ_LINE_MEMBER(rainbow_state::dsr_r) +{ + return m_inp4->read(); // W18 (1/0) +} + // KEYBOARD void rainbow_state::update_kbd_irq() { @@ -810,6 +876,18 @@ TIMER_DEVICE_CALLBACK_MEMBER(rainbow_state::keyboard_tick) m_kbd8251->transmit_clock(); m_kbd8251->receive_clock(); + if ( m_crtc->dc012_MHFU() ) // MHFU ENABLED? + { + if (MHFU_counter) + MHFU_counter--; + + if (MHFU_counter == 1) // resets ONCE. + { + printf("*** CPU RESET: MASSIVE HARDWARE FAILURE DETECTED (MHFU LOGIC ~108 ms)\n"); + m_i8088->set_input_line(INPUT_LINE_RESET, ASSERT_LINE); + } + } + if (m_beep_counter > 1) m_beep_counter--; else @@ -870,7 +948,7 @@ static const i8251_interface i8251_intf = { DEVCB_DRIVER_LINE_MEMBER(rainbow_state, kbd_rx), // rxd in DEVCB_DRIVER_LINE_MEMBER(rainbow_state, kbd_tx), // txd out - DEVCB_NULL, // dsr + DEVCB_DRIVER_LINE_MEMBER(rainbow_state, dsr_r), // dsr DEVCB_NULL, // dtr DEVCB_NULL, // rts DEVCB_DRIVER_LINE_MEMBER(rainbow_state, kbd_rxready_w), @@ -897,11 +975,11 @@ static MACHINE_CONFIG_START( rainbow, rainbow_state ) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_SIZE(132*10, 49*10) - MCFG_SCREEN_VISIBLE_AREA(0, 80*10-1, 0, 25*10-1) + MCFG_SCREEN_VISIBLE_AREA(0, 80 * 10-1, 0, 24 * 10-1) MCFG_SCREEN_UPDATE_DRIVER(rainbow_state, screen_update_rainbow) MCFG_GFXDECODE(rainbow) - MCFG_PALETTE_LENGTH(3) - MCFG_PALETTE_INIT_OVERRIDE(driver_device, monochrome_amber) + MCFG_PALETTE_LENGTH(4) + MCFG_RAINBOW_VIDEO_ADD("vt100_video", video_interface) /* sound hardware */ diff --git a/src/mess/machine/dec_lk201.c b/src/mess/machine/dec_lk201.c index e14b8119252..7a6cd3e75ab 100644 --- a/src/mess/machine/dec_lk201.c +++ b/src/mess/machine/dec_lk201.c @@ -2,9 +2,100 @@ DEC LK-201 keyboard Emulation by R. Belmont - This is currently the 6805 version; there's also an 8048 version. + This is the later "cost-reduced" 6805 version; there's also an 8048 version. */ +/* LK201-AA keyboard matrix (8048 version) + Source: VCB02 Technical Reference. + + KBD controller scan matrix (PORT 1): 8 x BCD IN => 18 DECIMAL OUT + + Keyboard itself: + 18 x IN (KEYBOARD DRIVE) KBD 17... KBD 0 => + 8 OUT (keyboard data @ D7..D0) + + to => PORT 0 @ KBD controller. + +________|D7 |D6 |D5 |D4 |D3 |D2 |D1 |D0 +..KBD17:|[R] |F19 |[R] |F20|PF4|N--- N,| Enter +........| | | | | | NOTE1) +........| |G22 | |G23|E23|D23|C23| A23 +........| | | | | | <- - - - - - ? ? +--------|----|----|----|---|---|---|---|--- +..KBD16:|F18 |PF3 |[R] |N9 |V |N6 |N3 |N +........|G21 |E22 | |D22|B17|C22|B22|A22 +--------|----|----|----|---|---|---|---|--- +..KBD15:|F17 |PF2 |[R] |N8 |N5 |-> | N2|N0 +........| | | | | | | |NOTE 2) +........|G20 |E21 | |D21|C21|B18|B21| +--------|----|----|----|---|---|---|---|--- + KBD14:|PF1 |Next|Remove ^|N7 |N4 |N1 |N0 +........| |Scrn| | || | | | +........|E20 |D18 |E18 |C17|D20|C20|B20|A20 +--------|----|----|----|---|---|---|---|--- +..KBD13:|Ins.|--- |D0 Prev| { |" |[R]|[R] +........|Here|- | Scrn. [ |' | | +........|E17 |E11 |G16 |D17 D11|C11| | +--------|----|----|----|---|---|---|---|--- +..KBD12:|Find|+ |Help|Se-| } Re- |<- | +........| |= | |lect ] turn| | +........|E16 |E12 |G15 |D16 D12|C13| | +--------|----|----|----|---|---|---|---|--- +..KBD11:Addtnl <X||[R] |) |P NOTE|: |? +.......Options Del| |0 | | 3)|; |/ +........|G14 | E13|....|E10|D10|...|C10|B10 +--------|----|----|----|---|---|---|---|--- +..KBD10:|[R] |F12 |[R] |F13| ( |O |L |. +........|....|(BS)| |(LF) 9 | | | +........|....|G12 |....|G13|E09|D09|C09|B09 +--------|----|----|----|---|---|---|---|--- +..KBD_9:|[R] |F11 |[R] |[R]|* |I |K | , +........|....|ESC | | |8 | | | , +........|....|G11 |....|...|E08|D08|C08|B08 +--------|----|----|----|---|---|---|---|--- +..KBD_8:|[R] |Main|[R] Exit|& |U |J |M +........| |Scrn| | |7 | | | +........| |G08 | |G09|E07|D07|C07|B07 +--------|----|----|----|---|---|---|---|--- +..KBD_7:|[R] Cancel[R] Resu ^ |Y |H |N +........| | | me |6 | | | +........|....|G07 |G06|E06|D06|C06|B06 +--------|----|----|----|---|---|---|---|--- +..KBD_6:|[R] |[R] |[R] Inter % |T |G |B +........|....|....|....rupt| 5 | | | +........|....|....|....|G05|E05|D05|C05|B05 +--------|----|----|----|---|---|---|---|--- +..KBD_5: F4 Break [R]|$ |R |F |V |Space +........|.........|....|4 | | | | +........ G02 G03 |....|E04 D04 C04 B04 A01-A09 +--------|----|----|----|---|---|---|---|--- +..KBD_4: [R] |Prt.|[R] |Set|# |E |D |C +........|....|Scrn|....|-Up|3 | | | +........|....|G00 |....|G01 E03 D03 C03 B03 +--------|----|----|----|---|---|---|---|--- +..KBD_3: Hold|@ |[R] |Tab|W |S |X |> +........|Scrn|2 |....| | | | |< +........|G99 |E02 |....|D00|D02|C02|B02|B00 +--------|----|----|----|---|---|---|---|--- +..KBD_2: [R] |[R] |[R] |~ |! |Q |A |Z +........|..............| |1 +........|..............|E00 E01 D01 C01 B01 +--------|----|----|----|---|---|---|---|--- +..KBD_1: Ctrl|Lock|Comp|[R] +........|C99 |C00 |A99 | +--------|----|----|----|---|---|---|---|--- +..KBD_0: Shift +........|B99,B11 + +--- + [R] = Reserved + NOTE 1) N0--N9, N---, N and N. refer to numeric keypad + NOTE 2) N0 can be divided into 2 keys. + Normally only the N0 keyswitch is implemented as a double-sized key. + NOTE 3) Return key occupies 2 positions that are + decoded as the Return (C13) key. + */ + #include "emu.h" #include "dec_lk201.h" #include "cpu/m6805/m6805.h" diff --git a/src/mess/video/vtvideo.c b/src/mess/video/vtvideo.c index 5a88875be9c..911a6e26951 100644 --- a/src/mess/video/vtvideo.c +++ b/src/mess/video/vtvideo.c @@ -1,25 +1,28 @@ -/********************************************************************** + /********************************************************************** DEC VT Terminal video emulation [ DC012 and DC011 emulation ] 01/05/2009 Initial implementation [Miodrag Milanovic] - Sept. 2013 portions by Karl-Ludwig Deisenhofer. + --/--/2013 portions by Karl-Ludwig Deisenhofer. - STATE OF DEC-100 VIDEO AS OF SEPTEMBER 2013 - ------------------------------------------- - - FURTHER TESTING: do line and character attributes match real hardware? Does soft scrolling work? - - LIKELY INCORRECT : implementation of double size attribute in 132 columns mode (additional case) + DEC VIDEO : STATE AS OF NOVEMBER 2013 + ------------------------------------- + - NOT WORKING : scrolling requires implementation of 'scrolling region'. Multiple regions could be present. + Split & a full screen modes exist. Scroll should be synced with beam or DMA. + See 4.7.4 and up in VT manual. - - MISSING: undocumented features of DC011 / DC012 - see public domain SQUEEZE.COM pokes: - 0f00 => PORT 0C; - 0b00 => PORT 0C; - 1000 => PORT 04 - (SQUEEZE compresses the display in X and Y direction on a real DEC-100 B) + - TESTS REQUIRED : do line and character attributes (plus combinations) match real hardware? + + - UNDOCUMENTED FEATURES of DC011 / DC012 (CLUES WANTED) + A. (VT 100): DEC VT terminals are said to have a feature that doubles the number of lines + (50 real lines or just interlaced mode with 500 instead of 250 scanlines?) + + B. (DEC-100-B) fun PD program SQUEEZE.COM _compresses_ display to X/2 and Y/2 + - so picture takes a quarter of the original screen. How does it accomplish this? - IMPROVEMENTS: - - find a more realistic approach for intensity control (bold attribute) - - correct phosphor colors (green, white and amber monitors were common) + - exact colors for different VR201 monitors ('paper white', green and amber) Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. @@ -140,12 +143,13 @@ void vt100_video_device::device_reset() } // ****** RAINBOW ****** -// 3 color palette, 24 and 48 line modes. +// 4 color (= monochrome intensities) palette, 24 and 48 line modes. void rainbow_video_device::device_reset() { + DEC_MHFU = true; // SET ON COLD BOOT + palette_set_color_rgb(machine(), 0, 0x00, 0x00, 0x00); // black - palette_set_color_rgb(machine(), 1, 213, 146, 82); // AMBER (not exact) - palette_set_color_rgb(machine(), 2, 255, 193, 129); // AMBER (brighter) + // (rest of the palette is set in the main program) m_height = 24; // <---- DEC-100 m_height_MAX = 48; @@ -193,11 +197,36 @@ READ8_MEMBER( vt100_video_device::lba7_r ) return m_lba7; } + // Also used by Rainbow-100 ************ WRITE8_MEMBER( vt100_video_device::dc012_w ) { + if (data == 0) + { + if (DEC_MHFU == true) + DEC_MHFU = false; // MHFU is disabled by writing 00 to port 010C. + } else + { + if (DEC_MHFU == false) + DEC_MHFU = true; // TODO: MHFU ENABLE should also reset the MHFU timer. + } + if (!(data & 0x08)) { + // The scroll offset put in 'm_scroll_latch' is a decimal offset controlling 10 scan lines. + // The BIOS first writes the least significant bits, then the 2 most significant bits. + + // If scrolling up (incrementing the scroll latch), the additional line is linked in at the bottom. + // When the scroll latch is incremented back to 0, the top line of the scrolling region must be unlinked. + + // When scrolling down (decrementing the scroll latch), new lines must be linked in at the top of the scroll region + // and unlinked down at the bottom. + + // Note that the scroll latch value will be used during the next frame rather than the current frame. + // All line linking/unlinking should be done during the vertical blanking interval (< 550ms). + + // More on scrolling regions: Rainbow 100 B technical documentation (QV069-GZ) April 1985 page 22 + // Also see VT100 Technical Manual: 4.7.4 Address Shuffling to 4.7.9 Split Screen Smooth Scrolling. if (!(data & 0x04)) { // set lower part scroll @@ -229,17 +258,20 @@ WRITE8_MEMBER( vt100_video_device::dc012_w ) // set reverse field off m_reverse_field = 0; break; + + // Writing a 11XX bit combination clears the blink-flip flop (valid for 0x0C - 0x0F): case 0x0c: - // set basic attribute to underline - m_basic_attribute = 0; + // set basic attribute to underline / blink flip-flop off m_blink_flip_flop = 0; + m_basic_attribute = 0; // (VT-100 without AVO): reverse video is interpreted as underline (basic_attribute 0) break; + case 0x0d: - // set basic attribute to reverse video / blink flip-flop off - m_basic_attribute = 1; + // (DEC Rainbow 100 DEFAULT) : reverse video with 24 lines / blink flip-flop off m_blink_flip_flop = 0; + m_basic_attribute = 1; // (VT-100 without AVO): reverse video is interpreted as reverse (basic_attribute 1) - if (m_height_MAX == 25) break; // VT 100. + if (m_height_MAX == 25) break; // Abort on VT-100 for now. if (m_height != 24) { @@ -249,14 +281,17 @@ WRITE8_MEMBER( vt100_video_device::dc012_w ) break; case 0x0e: - break; // (DC12) : 'not supported' + m_blink_flip_flop = 0; // 'unsupported' DC012 command. Turn blink flip-flop off. + break; - case 0x0f: - // (DEC Rainbow 100) : set basic attribute to reverse video / blink flip-flop off - m_basic_attribute = 1; + case 0x0f: + // (DEC Rainbow 100): reverse video with 48 lines / blink flip-flop off m_blink_flip_flop = 0; + m_basic_attribute = 1; - if (m_height_MAX == 25) break; // VT 100. + // 0x0f = 'reserved' on VT 100 + // Abort on VT-100 for now. + if (m_height_MAX == 25) break; if (m_height != 48) { @@ -435,102 +470,180 @@ void vt100_video_device::video_update(bitmap_ind16 &bitmap, const rectangle &cli } // ****** RAINBOW ****** -// 5 possible character states (normal, reverse, bold, blink, underline) are encoded into display_type. +// 5 possible CHARACTER STATES (normal, reverse, bold, blink, underline) are encoded into display_type. + +// From the VT-180 specs, chapter 6-43 (where multiple attributes are described): +// 1) reverse characters [ XOR of reverse video and reverse screen (A) ] normally have dim backgrounds with black characters (B) +// 2) bold and reverse together give a background of normal intensity + +// 3) blink controls intensity: normal chars vary between A) normal and dim (B) bold chars vary between bright and normal +// 4) blink applied to a +// A) reverse character causes it to alternate between normal and reverse video representation +// B) non-rev. " : alternate between usual intensity and the next lower intensity +// 5) underline causes the 9.th scan to be forced to +// A) white of the same intensity as the characters (for nonreversed characters), +// b) to black (for reverse characters) + +// LINE ATTRIBUTE 'double_height' always is interpreted as 'double width + double height' void rainbow_video_device::display_char(bitmap_ind16 &bitmap, UINT8 code, int x, int y, UINT8 scroll_region, UINT8 display_type) { - UINT8 xsize, d_xsize; + UINT16 y_preset; + UINT16 x_preset, d_x_preset; if (m_columns == 132) - { xsize = 9; - d_xsize = 18; + { x_preset = x * 9; + d_x_preset = x * 18; } else { - xsize = 10; - d_xsize = 20; + x_preset = x * 10; + d_x_preset = x * 20; } UINT8 line = 0; - int bit = 0, j=0, invert, bold, blink, underline; + int bit = 0, j = 0; + int fg_intensity; + int back_intensity, back_default_intensity; + + int invert = (display_type & 8) >> 3; // BIT 3 indicates REVERSE + int bold = (display_type & 16) >> 4; // BIT 4 indicates BOLD + int blink = display_type & 32; // BIT 5 indicates BLINK + int underline = display_type & 64; // BIT 6 indicates UNDERLINE + bool blank = (display_type & 0x80) ? true : false; // BIT 7 indicates BLANK - invert = display_type & 8; // BIT 3 indicates REVERSE - bold = (display_type & 16) >> 4; // BIT 4 indicates BOLD - blink = display_type & 32; // BIT 5 indicates BLINK - underline = display_type & 64; // BIT 6 indicates UNDERLINE display_type = display_type & 3; - int double_width = (display_type == 1) ? 1 : 0; + // CASE 1 A) + // SCREEN ATTRIBUTES (see VT-180 manual 6-30): + // 'reverse field' = reverse video over entire screen (identical on Rainbow-100) + + // What does 'base attribute' do on Rainbow-100 ? + // VT-100 interpretation ('without AVO, eigth char.bit defines base attribute') most likely not correct! + // OR 'base attribute' = reverse or underline (depending on the selection of the cursor at SETUP) ?? + // VT-100 manual 4-75 / 4-98 says: reverse = (reverse field H) XOR (reverse video H = base attribute input) + + // For reference: a complete truth table can be taken from TABLE 4-6-4 / VT100 technical manual. + // Following simple IF statements implement it in full. Code should not be shuffled! + invert = invert ^ m_reverse_field ^ m_basic_attribute; + + fg_intensity = bold + 2; // FOREGROUND (FG): normal (2) or bright (3) + + back_intensity = 0; // DO NOT SHUFFLE CODE AROUND !! + if ( (blink != 0) && ( m_blink_flip_flop != 0 ) ) + fg_intensity -= 1; // normal => dim bright => normal (when bold) + + // INVERSION: background gets foreground intensity (reduced by 1). + // _RELIES ON_ on_ previous evaluation of the BLINK signal (fg_intensity). + if (invert != 0) + { + back_intensity = fg_intensity - 1; // BG: normal => dim; dim => OFF; bright => normal + + if (back_intensity != 0) // FG: avoid 'black on black' + fg_intensity = 0; + else + fg_intensity = fg_intensity + 1; // FG: dim => normal; normal => bright + } + + // BG: DEFAULT for entire character (underline overrides this for 1 line) - + back_default_intensity = back_intensity; + + bool double_width = (display_type != 3) ? true : false; // all except normal: double width + bool double_height = (display_type & 1) ? false : true; // 0,2 = double height for (int i = 0; i < 10; i++) { + y_preset = y * 10 + i; + switch (display_type) { - case 0 : // bottom half, double height - j = (i >> 1) + 5; break; - case 2 : // top half, double height - j = (i >> 1); break; - - default : j = i; break; // 1: double width / 3: normal + case 0 : // bottom half of 'double height, double width' char. + j = (i >> 1) + 5; + break; + + case 2 : // top half of 'double height, double width' char. + j = (i >> 1); + break; + + default : // 1: double width + // 3: normal + j = i; + break; } + // modify line since that is how it is stored in rom if (j == 0) j = 15; else j = j - 1; line = m_gfx[code * 16 + j]; - if ( i == 8 ) + // UNDERLINED CHARACTERS (CASE 5 - different in 1 line): + back_intensity = back_default_intensity; // 0, 1, 2 + if ( underline != 0 ) { - if ( underline != 0 ) line = 0xff; - } - - // Code to handle basic attribute from VT-100 - if ( m_basic_attribute == 1 ) + if ( i == 8 ) + { + if (invert == 0) + line = 0xff; // CASE 5 A) + else + { line = 0x00; // CASE 5 B) + back_intensity = 0; // OVERRIDE: BLACK BACKGROUND + } + } + } + + for (int b = 0; b < 8; b++) // 0..7 { - if ((code & 0x80) == 0x80) - invert = 1; + if (blank) + { bit = m_reverse_field ^ m_basic_attribute; + } else - invert = 0; - } - - if (m_blink_flip_flop > 0) - { - if ( blink != 0 ) { - line = line ^ 0xff; + bit = BIT((line << b), 7); + + if (bit > 0) + bit = fg_intensity; + else + bit = back_intensity; } - } - if (invert != 0) - line = line ^ 0xff; - for (int b = 0; b < 8; b++) - { - bit = BIT((line << b), 7) << bold; + // Double, 'double_height + double_width', then normal. if (double_width) { - bitmap.pix16(y * 10 + i, x * d_xsize + b * 2) = bit; - bitmap.pix16(y * 10 + i, x * d_xsize + b * 2 + 1) = bit; + bitmap.pix16( y_preset, d_x_preset + b * 2 + 1) = bit; + bitmap.pix16( y_preset, d_x_preset + b * 2) = bit; + + if (double_height) + { + bitmap.pix16( 1 + y_preset, d_x_preset + b * 2 + 1) = bit; + bitmap.pix16( 1 + y_preset, d_x_preset + b * 2) = bit; + } } else { - bitmap.pix16(y * 10 + i, x * xsize + b) = bit; + bitmap.pix16(y_preset, x_preset + b) = bit; } - } - + } // for (8 bit) - // char interleave is filled with last bit + + // char interleave (X) is filled with last bit if (double_width) - { - bitmap.pix16(y * 10 + i, x * d_xsize + 16) = bit; - bitmap.pix16(y * 10 + i, x * d_xsize + 17) = bit; - bitmap.pix16(y * 10 + i, x * d_xsize + 18) = bit; - bitmap.pix16(y * 10 + i, x * d_xsize + 19) = bit; + { + // double chars: 18 or 20 bits + bitmap.pix16(y_preset, d_x_preset + 16) = bit; + bitmap.pix16(y_preset, d_x_preset + 17) = bit; + + if (m_columns == 80) + { bitmap.pix16(y_preset, d_x_preset + 18) = bit; + bitmap.pix16(y_preset, d_x_preset + 19) = bit; + } } else - { - bitmap.pix16(y * 10 + i, x * xsize + 8) = bit; - if (m_columns == 80) - bitmap.pix16(y * 10 + i, x * xsize + 9) = bit; + { // normal chars: 9 or 10 bits + bitmap.pix16(y_preset, x_preset + 8) = bit; + + if (m_columns == 80) + bitmap.pix16(y_preset, x_preset + 9) = bit; } + } // for - } } // ****** RAINBOW ****** @@ -543,42 +656,42 @@ void rainbow_video_device::video_update(bitmap_ind16 &bitmap, const rectangle &c int ypos = 0; UINT8 code; int x = 0; - UINT8 scroll_region = 1; // binary 1 + UINT8 scroll_region = 1; // DEFAULT TO 1 = PART OF scroll_region UINT8 display_type = 3; // binary 11 UINT16 temp = 0; while (line < (m_height + m_skip_lines)) { code = m_in_ram_func(addr + xpos); - if (code == 0xff) + + if ( code == 0x00 ) // TODO: investigate side effect on regular zero character! + display_type |= 0x80; // DEFAULT: filler chars (till end of line) and empty lines (00) will be blanked + else + display_type &= 0x7f; // else activate display. + + if ( code == 0xff ) { // end of line, fill empty till end of line if (line >= m_skip_lines) { - // NOTE: display_type is already SHIFTED by 1 ( 1 = DOUBLE WIDTH 40 / 66 ) - for (x = xpos; x < ((display_type == 1) ? (m_columns / 2) : m_columns); x++) + // NOTE: display_type is already shifted! All except 3 is DOUBLE WIDTH 40 or 66 chars per line + for (x = xpos; x < ( (display_type != 3) ? (m_columns / 2) : m_columns ); x++) { - display_char(bitmap, code, x, ypos, scroll_region, display_type); + display_char(bitmap, code, x, ypos, scroll_region, display_type | 0x80); } + } - // move to new data - temp = m_in_ram_func(addr + xpos + 2) * 256 + m_in_ram_func(addr + xpos + 1); + // LINE ATTRIBUTE - valid for all chars on next line ** DO NOT SHUFFLE ** + attr_addr = ( 0x1000 | (addr + xpos + 1) & 0x0fff ); + + // MOVE TO NEW DATA + temp = m_in_ram_func(addr + xpos + 2) * 256 + m_in_ram_func(addr + xpos + 1); addr = (temp) & 0x0fff; - attr_addr = ((temp) & 0x1fff) - 2; - // No AVO here. - attr_addr |= 0x1000; - if (attr_addr > 0x2000) // Ignore attributes beyond 8192 byte limit (SRAM). - { - scroll_region = 1; // binary 1 <- SET DEFAULTS - display_type = 3; // binary 111 - } else - { - temp = m_in_ram_func(attr_addr); - scroll_region = (temp) & 1; - display_type = (temp >> 1) & 3; - } + temp = m_in_ram_func(attr_addr); + scroll_region = (temp) & 1; + display_type = (temp >> 1) & 3; if (line >= m_skip_lines) { @@ -588,33 +701,76 @@ void rainbow_video_device::video_update(bitmap_ind16 &bitmap, const rectangle &c line++; } else - { + { // display regular char if (line >= m_skip_lines) { attr_addr = 0x1000 | ( (addr + xpos) & 0x0fff ); temp = m_in_ram_func(attr_addr); // get character attribute - // TODO: check if reverse bit is treated the same way on real hardware + // CONFIRMED: Reverse active on 1. No attributes = 0x0E // 1 = display char. in REVERSE (encoded as 8) // 0 = display char. in BOLD (encoded as 16) // 0 = display char. w. BLINK (encoded as 32) // 0 = display char. w. UNDERLINE (encoded as 64). - display_char(bitmap, code, xpos, ypos, scroll_region, display_type | ( ( (temp & 1)) << 3 ) - | ( (2-(temp & 2)) << 3 ) - | ( (4-(temp & 4)) << 3 ) - | ( (8-(temp & 8)) << 3 ) + display_char(bitmap, code, xpos, ypos, scroll_region, display_type | ( ( (temp & 1)) << 3 ) + | ( (2-(temp & 2)) << 3 ) + | ( (4-(temp & 4)) << 3 ) + | ( (8-(temp & 8)) << 3 ) ); - } + + } xpos++; - if (xpos > m_columns) + + if (xpos > m_columns ) { - line++; xpos = 0; + line++; } - } + } // (else) valid char + + } // while + + +} + + +void rainbow_video_device::palette_select ( int choice ) +{ + switch(choice) + { + default: + case 0x01: + palette_set_color_rgb(machine(), 1, 0xff-100, 0xff-100, 0xff-100); // WHITE (dim) + palette_set_color_rgb(machine(), 2, 0xff-50, 0xff-50, 0xff-50); // WHITE NORMAL + palette_set_color_rgb(machine(), 3, 0xff, 0xff, 0xff); // WHITE (brighter) + break; + + case 0x02: + palette_set_color_rgb(machine(), 1, 0 , 200 -50, 0); // GREEN (dim) + palette_set_color_rgb(machine(), 2, 0 , 200, 0); // GREEN (NORMAL) + palette_set_color_rgb(machine(), 3, 0, 200 +50, 0); // GREEN (brighter) + break; + + case 0x03: + palette_set_color_rgb(machine(), 1, 213 - 47, 146 - 47, 82 - 47); // AMBER (dim) + palette_set_color_rgb(machine(), 2, 213, 146, 82); // AMBER (normal - not exact) + palette_set_color_rgb(machine(), 3, 255, 193, 129); // AMBER (brighter) + break; } +} +// ****** RAINBOW ****** +void rainbow_video_device::video_blanking(bitmap_ind16 &bitmap, const rectangle &cliprect) +{ + // 'In reverse screen mode, termination forces the beam to the screen background intensity' + // Background intensity means 'dim' (1) according to one source. Most certainly not pitch black. + bitmap.fill( ((m_reverse_field ^ m_basic_attribute) ? 1 : 0) , cliprect); +} + +int rainbow_video_device::dc012_MHFU() +{ + return DEC_MHFU; } TIMER_CALLBACK_MEMBER( vt100_video_device::lba7_change ) diff --git a/src/mess/video/vtvideo.h b/src/mess/video/vtvideo.h index 56514282c7e..953d2c23bc8 100644 --- a/src/mess/video/vtvideo.h +++ b/src/mess/video/vtvideo.h @@ -58,6 +58,7 @@ protected: UINT8 *m_gfx; /* content of char rom */ int m_lba7; + bool DEC_MHFU; // dc012 attributes UINT8 m_scroll_latch; @@ -71,6 +72,7 @@ protected: UINT8 m_skip_lines; UINT8 m_frequency; UINT8 m_interlaced; + }; @@ -80,7 +82,10 @@ public: rainbow_video_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); virtual void video_update(bitmap_ind16 &bitmap, const rectangle &cliprect); + virtual void video_blanking(bitmap_ind16 &bitmap, const rectangle &cliprect); + int dc012_MHFU(); + void palette_select(int choice); protected: virtual void display_char(bitmap_ind16 &bitmap, UINT8 code, int x, int y, UINT8 scroll_region, UINT8 display_type); virtual void device_reset(); |