summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/digel804.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/drivers/digel804.cpp')
-rw-r--r--src/mame/drivers/digel804.cpp794
1 files changed, 0 insertions, 794 deletions
diff --git a/src/mame/drivers/digel804.cpp b/src/mame/drivers/digel804.cpp
deleted file mode 100644
index f041ebcb882..00000000000
--- a/src/mame/drivers/digel804.cpp
+++ /dev/null
@@ -1,794 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:balrog,Jonathan Gevaryahu,Sandro Ronco
-/******************************************************************************
-*
-* Wavetek/Digelec model 804/EP804 (eprom programmer) driver
-* By balrog and Jonathan Gevaryahu AKA Lord Nightmare
-* Code adapted from zexall.c
-*
-* DONE:
-* figure out z80 address space and hook up roms and rams (done)
-* figure out where 10937 vfd controller lives (port 0x44 bits 7 and 0, POR has not been found yet)
-* figure out how keypresses are detected (/INT?, port 0x43, and port 0x46)
-* figure out how the banked ram works (writes to port 0x43 select a ram bank, fw2.2 supports 64k and fw4.1 supports 256k)
-* tentatively figure out how flow control from ACIA works (/NMI)?
-* hook up the speaker/beeper (port 0x45)
-* hook up vfd controller (done to stderr, no artwork)
-* hook up leds on front panel (done to stderr for now)
-* hook up r6551 serial and attach terminal for sending to ep804
-* /nmi is emulated correctly (i.e. its tied to +5v. that was easy!)
-* hook up keypad via 74C923 and mode buttons via logic gate mess
-*
-* TODO:
-* remove ACIA hack in digel804_state::acia_command_w
-* minor finishing touches to i/o map
-* EPROM socket stuff (ports 0x40, 0x41, 0x42 and 0x47)
-* artwork
-*
-******************************************************************************/
-
-/* Core includes */
-#include "emu.h"
-#include "bus/rs232/rs232.h"
-#include "cpu/z80/z80.h"
-#include "machine/mm74c922.h"
-#include "machine/mos6551.h"
-#include "machine/ram.h"
-#include "machine/roc10937.h"
-#include "sound/spkrdev.h"
-#include "speaker.h"
-
-#include "digel804.lh"
-
-
-// port 40 read reads eprom socket pins 11-13, 15-19 (i.e. eprom pin D0 to pin D7)
-
-// port 40 write writes eprom socket pins 11-13, 15-19 (i.e. eprom pin D0 to pin D7)
-
-// port 41 write controls eprom socket pins 10 to 3 (d0 to d8 to eprom pins A0 to A7) and SIM pins 7, 20/11, 8/12, 27, 23, and 21 (d0 to d5, corresponding to SIM pins for A9, A10, A11, A12, A13, and A14+A15)
-// Note: the v2.0 hardware has bit d6 controlling one of the pins going to the expansion ram socket
-// The 2.0 hardware may also have separate SIM controls for A14 and A15, possibly using bit d7 to control sim A15 somehow
-
-// port 42 write controls eprom socket pins 25(d0), 2(d4), 27(d6)
-
-// port 43 read is status/mode
-#undef PORT43_R_VERBOSE
-// port 43 write is ram banking and ctl1-7; it also clears overload state
-#define PORT43_W_VERBOSE 1
-// port 44 write is vfd serial/reset, as well as power and z80 control and various enables; it also clears powerfail state
-#define PORT44_W_VERBOSE 1
-// port 45 write is speaker control
-#undef PORT45_W_VERBOSE
-// port 46 read is keypad
-
-// port 46 write is LED control
-#undef PORT46_W_VERBOSE
-
-// port 47 write is tim0-tim7
-
-
-class digel804_state : public driver_device
-{
-public:
- digel804_state(const machine_config &mconfig, device_type type, const char *tag) :
- driver_device(mconfig, type, tag),
- m_ram(*this, RAM_TAG),
- m_maincpu(*this, "maincpu"),
- m_acia(*this, "acia"),
- m_speaker(*this, "speaker"),
- m_vfd(*this, "vfd"),
- m_kb(*this, "74c923"),
- m_rambank(*this, "bankedram"),
- m_func_leds(*this, "func_led%u", 0U)
- {
- }
-
- DECLARE_INPUT_CHANGED_MEMBER(mode_change);
-
- void digel804(machine_config &config);
-
-protected:
- virtual void machine_start() override;
- virtual void machine_reset() override;
-
- DECLARE_WRITE8_MEMBER( op00 );
- DECLARE_READ8_MEMBER( ip40 );
- DECLARE_WRITE8_MEMBER( op40 );
- DECLARE_WRITE8_MEMBER( op41 );
- DECLARE_WRITE8_MEMBER( op42 );
- DECLARE_READ8_MEMBER( ip43 );
- DECLARE_WRITE8_MEMBER( op43 );
- DECLARE_WRITE8_MEMBER( op43_1_4 );
- DECLARE_WRITE8_MEMBER( op44 );
- DECLARE_WRITE8_MEMBER( op45 );
- DECLARE_READ8_MEMBER( ip46 );
- DECLARE_WRITE8_MEMBER( op46 );
- DECLARE_WRITE8_MEMBER( op47 );
- DECLARE_READ8_MEMBER( acia_rxd_r );
- DECLARE_WRITE8_MEMBER( acia_txd_w );
- DECLARE_READ8_MEMBER( acia_status_r );
- DECLARE_WRITE8_MEMBER( acia_reset_w );
- DECLARE_READ8_MEMBER( acia_command_r );
- DECLARE_WRITE8_MEMBER( acia_command_w );
- DECLARE_READ8_MEMBER( acia_control_r );
- DECLARE_WRITE8_MEMBER( acia_control_w );
- DECLARE_WRITE_LINE_MEMBER( acia_irq_w );
- DECLARE_WRITE_LINE_MEMBER( da_w );
-
- void z80_mem_804_1_4(address_map &map);
- void z80_io_1_4(address_map &map);
-
- required_device<ram_device> m_ram;
- required_device<cpu_device> m_maincpu;
- required_device<mos6551_device> m_acia;
-
-private:
- required_device<speaker_sound_device> m_speaker;
- required_device<roc10937_device> m_vfd;
- required_device<mm74c922_device> m_kb;
- required_memory_bank m_rambank;
-
- output_finder<16> m_func_leds;
-
- // current speaker state for port 45
- uint8_t m_speaker_state;
- // ram stuff for banking
- uint8_t m_ram_bank;
- // states
- uint8_t m_acia_intq;
- uint8_t m_overload_state;
- uint8_t m_key_intq;
- uint8_t m_remote_mode;
- uint8_t m_key_mode;
- uint8_t m_sim_mode;
- uint8_t m_powerfail_state;
- uint8_t m_chipinsert_state;
- uint8_t m_keyen_state;
- uint8_t m_op41;
-};
-
-
-class ep804_state : public digel804_state
-{
-public:
- using digel804_state::digel804_state;
-
- void ep804(machine_config &config);
-
-protected:
- DECLARE_WRITE_LINE_MEMBER( ep804_acia_irq_w );
-
- void z80_mem_804_1_2(address_map &map);
- void z80_io_1_2(address_map &map);
-};
-
-
-enum { MODE_OFF, MODE_KEY, MODE_REM, MODE_SIM };
-
-
-void digel804_state::machine_start()
-{
- m_func_leds.resolve();
-
- save_item(NAME(m_speaker_state));
- save_item(NAME(m_ram_bank));
- save_item(NAME(m_acia_intq));
- save_item(NAME(m_overload_state));
- save_item(NAME(m_key_intq));
- save_item(NAME(m_remote_mode));
- save_item(NAME(m_key_mode));
- save_item(NAME(m_sim_mode));
- save_item(NAME(m_powerfail_state));
- save_item(NAME(m_chipinsert_state));
- save_item(NAME(m_keyen_state));
- save_item(NAME(m_op41));
-
- m_speaker_state = 0;
- //port43_rtn = 0xEE;//0xB6;
- m_acia_intq = 1; // /INT source 1
- m_overload_state = 0; // OVLD
- m_key_intq = 1; // /INT source 2
- m_remote_mode = 1; // /REM
- m_key_mode = 0; // /KEY
- m_sim_mode = 1; // /SIM
- m_powerfail_state = 1; // "O11"
- m_chipinsert_state = 0; // PIN
- m_ram_bank = 0;
- m_op41 = 0;
- m_keyen_state = 1; // /KEYEN
-
- m_rambank->set_base(m_ram->pointer());
-}
-
-void digel804_state::machine_reset()
-{
- m_vfd->reset();
-}
-
-READ8_MEMBER( digel804_state::ip40 ) // eprom data bus read
-{
- // TODO: would be nice to have a 'fake eprom' here
- return 0xFF;
-}
-
-WRITE8_MEMBER( digel804_state::op40 ) // eprom data bus write
-{
- // TODO: would be nice to have a 'fake eprom' here
- logerror("Digel804: port 40, eprom databus had %02X written to it!\n", data);
-}
-
-WRITE8_MEMBER( digel804_state::op41 ) // eprom address low write AND SIM write, d6 also controls memory map somehow
-{
- // TODO: would be nice to have a 'fake eprom' here
- logerror("Digel804: port 41, eprom address low/sim/memorybank had %02X written to it!\n", data);
- //fprintf(stderr,"op41 write of %02X, ram mapper bit is %d\n", data, (data&0x40)?1:0);
- m_op41 = data;
-}
-
-WRITE8_MEMBER( digel804_state::op42 ) // eprom address hi and control write
-{
- // TODO: would be nice to have a 'fake eprom' here
- logerror("Digel804: port 42, eprom address hi/control had %02X written to it!\n", data);
-}
-
-READ8_MEMBER( digel804_state::ip43 )
-{
- /* Register 0x43: status/mode register read
- bits 76543210
- |||||||\- overload state (0 = not overloaded; 1 = overload detected, led on and power disconnected to ic, writing to R43 sets this to ok)
- ||||||\-- debug jumper X5 on the board; reads as 1 unless jumper is present
- |||||\--- /INT status (any key pressed on keypad (0 = one or more pressed, 1 = none pressed) OR ACIA has thrown an int)
- ||||\---- remote mode selected (0 = selected, 1 = not) \
- |||\----- key mode selected (0 = selected, 1 = not) > if all 3 of these are 1, unit is going to standby
- ||\------ sim mode selected (0 = selected, 1 = not) /
- |\------- power failure status (1 = power has failed, 0 = ok; writes to R44 set this to ok)
- \-------- chip insert detect state 'PIN' (1 = no chip or cmos chip which ammeter cannot detect; 0 = nmos or detectable chip inserted)
- after power failure (in key mode):
- 0xEE 11101110 when no keypad key pressed
- 0xEA 11101010 when keypad key pressed
- in key mode:
- 0xAE 10101110 when no keypad key pressed
- 0xAA 10101010 when keypad key pressed
- in remote mode:
- 0xB6 10110110 when no keypad key pressed
- 0xB2 10110010 when keypad key pressed
- in sim mode:
- 0x9E 10011110 when no keypad key pressed
- 0x9A 10011010 when keypad key pressed
- in off mode (before z80 is powered down):
- 0xFE 11111110
-
- */
-
-#ifdef PORT43_R_VERBOSE
- logerror("Digel804: returning %02X for port 43 status read\n", port43_rtn);
-#endif
- return ((m_overload_state<<0)
- |((ioport("DEBUG")->read()&1)<<1)
- |((m_key_intq&m_acia_intq)<<2)
- |(m_remote_mode<<3)
- |(m_key_mode<<4)
- |(m_sim_mode<<5)
- |(m_powerfail_state<<6)
- |(m_chipinsert_state<<7));
-
-}
-
-WRITE8_MEMBER( digel804_state::op00 )
-{
- m_ram_bank = data;
- m_rambank->set_base(m_ram->pointer() + ((m_ram_bank * 0x8000) & m_ram->mask()));
-}
-
-WRITE8_MEMBER( digel804_state::op43 )
-{
- /* writes to 0x43 control the ram banking on firmware which supports it
- * bits:76543210
- * |||||\\\- select ram bank for 4000-bfff area based on these bits (2.0 hardware)
- * \\\\\\\-- CTL lines
-
- * all writes to port 43 will reset the overload state unless the ammeter detects the overload is ongoing
- */
- m_overload_state = 0; // writes to port 43 clear overload state
-#ifdef PORT43_W_VERBOSE
- logerror("Digel804: port 0x43 ram bank had %02x written to it!\n", data);
- logerror(" op41 bit 6 is %d\n", (m_op41 & 0x40)?1:0);
-#endif
- m_ram_bank = data&7;
- if ((data&0xF8)!=0)
- logerror("Digel804: port 0x43 ram bank had unexpected data %02x written to it!\n", data);
-
- m_rambank->set_base(m_ram->pointer() + ((m_ram_bank * 0x8000) & m_ram->mask()));
-}
-
-WRITE8_MEMBER( digel804_state::op43_1_4 )
-{
- m_overload_state = 0; // writes to port 43 clear overload state
-}
-
-WRITE8_MEMBER( digel804_state::op44 ) // state write
-{
- /* writes to 0x44 control the 10937 vfd chip, z80 power/busrq, eprom driving and some eprom power ctl lines
- * bits:76543210
- * |||||||\- 10937 VFDC '/SCK' serial clock '/CDIS'
- * ||||||\-- controls '/KEYEN' (which enables the four mode buttons when active)
- * |||||\--- z80 and system power control (0 = power on, 1 = power off/standby), also controls '/MEMEN' which secondarily controls POR(power on/reset) for the VFDC chip
- * ||||\---- controls the z80 /BUSRQ line (0 = idle/high, 1 = asserted/low) '/BRQ'
- * |||\----- when 1, enables the output drivers of op40 to the rom data pins
- * ||\------ controls 'CTL8'
- * |\------- controls 'CTL9'
- * \-------- 10937 VFDC 'DATA' serial data '/DDIS'
-
- * all writes to port 44 will reset the powerfail state
- */
- m_powerfail_state = 0; // writes to port 44 clear powerfail state
- m_keyen_state = BIT(data, 1);
-#ifdef PORT44_W_VERBOSE
- logerror("Digel804: port 0x44 vfd/state control had %02x written to it!\n", data);
-#endif
- m_vfd->por(!(data&0x04));
- m_vfd->data(data&0x80);
- m_vfd->sclk(data&1);
-}
-
-WRITE8_MEMBER( digel804_state::op45 ) // speaker write
-{
- // all writes to here invert the speaker state, verified from schematics
-#ifdef PORT45_W_VERBOSE
- logerror("Digel804: port 0x45 speaker had %02x written to it!\n", data);
-#endif
- m_speaker_state ^= 0xFF;
- m_speaker->level_w(m_speaker_state);
-}
-
-READ8_MEMBER( digel804_state::ip46 ) // keypad read
-{
- /* reads E* for a keypad number 0-F
- * reads F0 for enter
- * reads F4 for next
- * reads F8 for rept
- * reads FC for clear
- * F* takes precedence over E*
- * higher numbers take precedence over lower ones
- * this value auto-latches on a key press and remains through multiple reads
- * this is done by a 74C923 integrated circuit
- */
- uint8_t kbd = m_kb->read();
-#ifdef PORT46_R_VERBOSE
- logerror("Digel804: returning %02X for port 46 keypad read\n", kbd);
-#endif
-
- return bitswap<8>(kbd,7,6,5,4,1,0,3,2); // verified from schematics
-}
-
-WRITE8_MEMBER( digel804_state::op46 )
-{
- /* writes to 0x46 control the LEDS on the front panel
- * bits:76543210
- * ||||\\\\- these four bits choose which of the 16 function leds is lit; the number is INVERTED first
- * |||\----- if this bit is 1, the function leds are disabled
- * ||\------ this bit controls the 'error' led; 1 = on
- * |\------- this bit controls the 'busy' led; 1 = on
- * \-------- this bit controls the 'input' led; 1 = on
- */
-#ifdef PORT46_W_VERBOSE
- logerror("Digel804: port 0x46 LED control had %02x written to it!\n", data);
-#endif
- //popmessage("LEDS: %s %s %s Func: %s%d\n", (data&0x80)?"INPUT":"-----", (data&0x40)?"BUSY":"----", (data&0x20)?"ERROR":"-----", (data&0x10)?"None":"", (data&0x10)?-1:(~data&0xF));
- //fprintf("LEDS: %s %s %s Func: %s%d\n", (data&0x80)?"INPUT":"-----", (data&0x40)?"BUSY":"----", (data&0x20)?"ERROR":"-----", (data&0x10)?"None":"", (data&0x10)?-1:(~data&0xF));
-
- output().set_value("input_led", BIT(data,7));
- output().set_value("busy_led", BIT(data,6));
- output().set_value("error_led", BIT(data,5));
-
- for (int i = 0; i < 16; i++)
- m_func_leds[i] = (!(data & 0x10) && ((~data & 0x0f) == i)) ? 1 : 0;
-}
-
-WRITE8_MEMBER( digel804_state::op47 ) // eprom timing/power and control write
-{
- // TODO: would be nice to have a 'fake eprom' here
- logerror("Digel804: port 47, eprom timing/power and control had %02X written to it!\n", data);
-}
-
-INPUT_CHANGED_MEMBER( digel804_state::mode_change )
-{
- if (!newval && !m_keyen_state)
- {
- switch (param)
- {
- case MODE_OFF:
- m_key_mode = m_remote_mode = m_sim_mode = 1;
- break;
- case MODE_KEY:
- m_remote_mode = m_sim_mode = 1;
- m_key_mode = 0;
- break;
- case MODE_REM:
- m_key_mode = m_sim_mode = 1;
- m_remote_mode = 0;
- break;
- case MODE_SIM:
- m_remote_mode = m_key_mode = 1;
- m_sim_mode = 0;
- break;
- }
-
- m_acia->reset();
- }
-
- // press one of those keys reset the Z80
- m_maincpu->set_input_line(INPUT_LINE_RESET, (!newval && !m_keyen_state) ? ASSERT_LINE : CLEAR_LINE);
-}
-
-/* ACIA Trampolines */
-READ8_MEMBER( digel804_state::acia_rxd_r )
-{
- return m_acia->read(0);
-}
-
-WRITE8_MEMBER( digel804_state::acia_txd_w )
-{
- m_acia->write(0, data);
-}
-
-READ8_MEMBER( digel804_state::acia_status_r )
-{
- return m_acia->read(1);
-}
-
-WRITE8_MEMBER( digel804_state::acia_reset_w )
-{
- m_acia->write(1, data);
-}
-
-READ8_MEMBER( digel804_state::acia_command_r )
-{
- return m_acia->read(2);
-}
-
-WRITE8_MEMBER( digel804_state::acia_command_w )
-{
- data |= 0x08; // HACK for ep804 remote mode
-
- m_acia->write(2, data);
-}
-
-READ8_MEMBER( digel804_state::acia_control_r )
-{
- return m_acia->read(3);
-}
-
-WRITE8_MEMBER( digel804_state::acia_control_w )
-{
- m_acia->write(3, data);
-}
-
-
-/******************************************************************************
- Address Maps
-******************************************************************************/
-
-void digel804_state::z80_mem_804_1_4(address_map &map)
-{
- map.unmap_value_high();
- map(0x0000, 0x3fff).rom(); // 3f in mapper = rom J3
- //map(0x4000, 0x5fff).ram().share("main_ram"); // 6f in mapper = RAM D43 (6164)
- //map(0x6000, 0x7fff).ram().share("main_ram"); // 77 in mapper = RAM D44 (6164)
- //map(0x8000, 0x9fff).ram().share("main_ram"); // 7b in mapper = RAM D45 (6164)
- //map(0xa000, 0xbfff).ram().share("main_ram"); // 7d in mapper = RAM D46 (6164)
- map(0x4000, 0xbfff).bankrw("bankedram");
- // c000-cfff is open bus in mapper, 7f
- map(0xd000, 0xd7ff).ram(); // 7e in mapper = RAM P3 (6116)
- map(0xd800, 0xf7ff).rom(); // 5f in mapper = rom K3
- // f800-ffff is open bus in mapper, 7f
-}
-
-void ep804_state::z80_mem_804_1_2(address_map &map)
-{
- map.unmap_value_high();
- map(0x0000, 0x1fff).rom(); // 3f in mapper = rom D41
- map(0x2000, 0x3fff).rom(); // 5f in mapper = rom D42
- //map(0x4000, 0x5fff).ram().share("main_ram"); // 6f in mapper = RAM D43 (6164)
- //map(0x6000, 0x7fff).ram().share("main_ram"); // 77 in mapper = RAM D44 (6164)
- //map(0x8000, 0x9fff).ram().share("main_ram"); // 7b in mapper = RAM D45 (6164)
- //map(0xa000, 0xbfff).ram().share("main_ram"); // 7d in mapper = RAM D46 (6164)
- map(0x4000, 0xbfff).bankrw("bankedram");
- // c000-cfff is open bus in mapper, 7f
- //map(0xc000, 0xc7ff).ram(); // hack for now to test, since sometimes it writes to c3ff
- map(0xd000, 0xd7ff).ram(); // 7e in mapper = RAM D47 (6116)
- // d800-ffff is open bus in mapper, 7f
-}
-
-void digel804_state::z80_io_1_4(address_map &map)
-{
- map.unmap_value_high();
- map.global_mask(0xff);
- // io bits: x 1 x x x * * *
- // writes to 47, 4e, 57, 5e, 67, 6e, 77, 7e, c7, ce, d7, de, e7, ee, f7, fe all go to 47, same with reads
- map(0x00, 0x00).mirror(0x38).w(FUNC(digel804_state::op00)); // W, banked ram
- map(0x40, 0x40).mirror(0xB8).rw(FUNC(digel804_state::ip40), FUNC(digel804_state::op40)); // RW, eprom socket data bus input/output value
- map(0x41, 0x41).mirror(0xB8).w(FUNC(digel804_state::op41)); // W, eprom socket address low out
- map(0x42, 0x42).mirror(0xB8).w(FUNC(digel804_state::op42)); // W, eprom socket address hi/control out
- map(0x43, 0x43).mirror(0xB8).rw(FUNC(digel804_state::ip43), FUNC(digel804_state::op43_1_4)); // RW, mode and status register, also checks if keypad is pressed; write is unknown
- map(0x44, 0x44).mirror(0xB8).w(FUNC(digel804_state::op44)); // W, 10937 vfd controller, z80 power and state control reg
- map(0x45, 0x45).mirror(0xB8).w(FUNC(digel804_state::op45)); // W, speaker bit; every write inverts state
- map(0x46, 0x46).mirror(0xB8).rw(FUNC(digel804_state::ip46), FUNC(digel804_state::op46)); // RW, reads keypad, writes controls the front panel leds.
- map(0x47, 0x47).mirror(0xB8).w(FUNC(digel804_state::op47)); // W eprom socket power and timing control
- // io bits: 1 0 x x x * * *
- // writes to 80, 88, 90, 98, a0, a8, b0, b8 all go to 80, same with reads
- map(0x80, 0x80).mirror(0x38).w(FUNC(digel804_state::acia_txd_w)); // (ACIA xmit reg)
- map(0x81, 0x81).mirror(0x38).r(FUNC(digel804_state::acia_rxd_r)); // (ACIA rcv reg)
- map(0x82, 0x82).mirror(0x38).w(FUNC(digel804_state::acia_reset_w)); // (ACIA reset reg)
- map(0x83, 0x83).mirror(0x38).r(FUNC(digel804_state::acia_status_r)); // (ACIA status reg)
- map(0x84, 0x84).mirror(0x38).w(FUNC(digel804_state::acia_command_w)); // (ACIA command reg)
- map(0x85, 0x85).mirror(0x38).r(FUNC(digel804_state::acia_command_r)); // (ACIA command reg)
- map(0x86, 0x86).mirror(0x38).w(FUNC(digel804_state::acia_control_w)); // (ACIA control reg)
- map(0x87, 0x87).mirror(0x38).r(FUNC(digel804_state::acia_control_r)); // (ACIA control reg)
- //map(0x80,0x87).mirror(0x38).shift(-1).rw("acia", FUNC(mos6551_device::read, FUNC(mos6551_device::write)); // this doesn't work since we lack a shift() command
-
-}
-
-void ep804_state::z80_io_1_2(address_map &map)
-{
- map.unmap_value_high();
- map.global_mask(0xff);
- // io bits: x 1 x x x * * *
- // writes to 47, 4e, 57, 5e, 67, 6e, 77, 7e, c7, ce, d7, de, e7, ee, f7, fe all go to 47, same with reads
- map(0x40, 0x40).mirror(0xB8).rw(FUNC(ep804_state::ip40), FUNC(ep804_state::op40)); // RW, eprom socket data bus input/output value
- map(0x41, 0x41).mirror(0xB8).w(FUNC(ep804_state::op41)); // W, eprom socket address low out
- map(0x42, 0x42).mirror(0xB8).w(FUNC(ep804_state::op42)); // W, eprom socket address hi/control out
- map(0x43, 0x43).mirror(0xB8).rw(FUNC(ep804_state::ip43), FUNC(ep804_state::op43)); // RW, mode and status register, also checks if keypad is pressed; write is unknown
- map(0x44, 0x44).mirror(0xB8).w(FUNC(ep804_state::op44)); // W, 10937 vfd controller, z80 power and state control reg
- map(0x45, 0x45).mirror(0xB8).w(FUNC(ep804_state::op45)); // W, speaker bit; every write inverts state
- map(0x46, 0x46).mirror(0xB8).rw(FUNC(ep804_state::ip46), FUNC(ep804_state::op46)); // RW, reads keypad, writes controls the front panel leds.
- map(0x47, 0x47).mirror(0xB8).w(FUNC(ep804_state::op47)); // W eprom socket power and timing control
- // io bits: 1 0 x x x * * *
- // writes to 80, 88, 90, 98, a0, a8, b0, b8 all go to 80, same with reads
- map(0x80, 0x80).mirror(0x38).w(FUNC(ep804_state::acia_txd_w)); // (ACIA xmit reg)
- map(0x81, 0x81).mirror(0x38).r(FUNC(ep804_state::acia_rxd_r)); // (ACIA rcv reg)
- map(0x82, 0x82).mirror(0x38).w(FUNC(ep804_state::acia_reset_w)); // (ACIA reset reg)
- map(0x83, 0x83).mirror(0x38).r(FUNC(ep804_state::acia_status_r)); // (ACIA status reg)
- map(0x84, 0x84).mirror(0x38).w(FUNC(ep804_state::acia_command_w)); // (ACIA command reg)
- map(0x85, 0x85).mirror(0x38).r(FUNC(ep804_state::acia_command_r)); // (ACIA command reg)
- map(0x86, 0x86).mirror(0x38).w(FUNC(ep804_state::acia_control_w)); // (ACIA control reg)
- map(0x87, 0x87).mirror(0x38).r(FUNC(ep804_state::acia_control_r)); // (ACIA control reg)
- //map(0x80,0x87).mirror(0x38).shift(-1).rw("acia", FUNC(mos6551_device::read, FUNC(mos6551_device::write)); // this doesn't work since we lack a shift() command
-
-}
-
-
-/******************************************************************************
- Input Ports
-******************************************************************************/
-static INPUT_PORTS_START( digel804 )
- PORT_START("LINE0") /* KEY ROW 0, 'X1' */
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENTR/INCR") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('^')
-
- PORT_START("LINE1") /* KEY ROW 1, 'X2' */
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("NEXT/DECR") PORT_CODE(KEYCODE_DOWN) PORT_CHAR('V')
-
- PORT_START("LINE2") /* KEY ROW 2, 'X3' */
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("REPT") PORT_CODE(KEYCODE_X) PORT_CHAR('X')
-
- PORT_START("LINE3") /* KEY ROW 3, 'X4' */
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CLR") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-')
-
- PORT_START("MODE") // TODO, connects entirely separately from the keypad through some complicated latching logic
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("KEY") PORT_CODE(KEYCODE_K) PORT_CHANGED_MEMBER( DEVICE_SELF, digel804_state, mode_change, MODE_KEY )
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("REM") PORT_CODE(KEYCODE_R) PORT_CHANGED_MEMBER( DEVICE_SELF, digel804_state, mode_change, MODE_REM )
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SIM") PORT_CODE(KEYCODE_S) PORT_CHANGED_MEMBER( DEVICE_SELF, digel804_state, mode_change, MODE_SIM )
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("OFF") PORT_CODE(KEYCODE_O) PORT_CHANGED_MEMBER( DEVICE_SELF, digel804_state, mode_change, MODE_OFF )
-
- PORT_START("DEBUG") // debug jumper on the board
- PORT_DIPNAME( 0x01, 0x01, "Debug Mode" )
- PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
- PORT_DIPSETTING( 0x00, DEF_STR( On ) )
-INPUT_PORTS_END
-
-static DEVICE_INPUT_DEFAULTS_START( digel804_rs232_defaults )
- DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 )
- DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 )
- DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 )
- DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 )
- DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_ODD )
- DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_1 )
-DEVICE_INPUT_DEFAULTS_END
-
-/******************************************************************************
- Machine Drivers
-******************************************************************************/
-
-WRITE_LINE_MEMBER( digel804_state::da_w )
-{
- m_key_intq = state ? 0 : 1;
- m_maincpu->set_input_line(0, (m_key_intq & m_acia_intq) ? CLEAR_LINE : ASSERT_LINE);
-}
-
-WRITE_LINE_MEMBER( digel804_state::acia_irq_w )
-{
- m_acia_intq = state ? 0 : 1;
- m_maincpu->set_input_line(0, (m_key_intq & m_acia_intq) ? CLEAR_LINE : ASSERT_LINE);
-}
-
-WRITE_LINE_MEMBER( ep804_state::ep804_acia_irq_w )
-{
-}
-
-void digel804_state::digel804(machine_config &config)
-{
- /* basic machine hardware */
- Z80(config, m_maincpu, 3.6864_MHz_XTAL/2); /* Z80A, X1(aka E0 on schematics): 3.6864Mhz */
- m_maincpu->set_addrmap(AS_PROGRAM, &digel804_state::z80_mem_804_1_4);
- m_maincpu->set_addrmap(AS_IO, &digel804_state::z80_io_1_4);
- config.set_maximum_quantum(attotime::from_hz(60));
-
- ROC10937(config, m_vfd); // RIGHT_TO_LEFT
-
- /* video hardware */
- config.set_default_layout(layout_digel804);
-
- MM74C923(config, m_kb, 0);
- m_kb->da_wr_callback().set(FUNC(digel804_state::da_w));
- m_kb->x1_rd_callback().set_ioport("LINE0");
- m_kb->x2_rd_callback().set_ioport("LINE1");
- m_kb->x3_rd_callback().set_ioport("LINE2");
- m_kb->x4_rd_callback().set_ioport("LINE3");
-
- /* acia */
- MOS6551(config, m_acia, 0);
- m_acia->set_xtal(3.6864_MHz_XTAL/2);
- m_acia->irq_handler().set(FUNC(digel804_state::acia_irq_w));
- m_acia->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd));
- m_acia->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts));
- m_acia->dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr));
-
- rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, "null_modem"));
- rs232.rxd_handler().set(m_acia, FUNC(mos6551_device::write_rxd));
- rs232.dsr_handler().set(m_acia, FUNC(mos6551_device::write_dsr));
- rs232.cts_handler().set(m_acia, FUNC(mos6551_device::write_cts));
- rs232.set_option_device_input_defaults("null_modem", DEVICE_INPUT_DEFAULTS_NAME(digel804_rs232_defaults));
- rs232.set_option_device_input_defaults("terminal", DEVICE_INPUT_DEFAULTS_NAME(digel804_rs232_defaults));
-
- RAM(config, m_ram).set_default_size("256K").set_extra_options("32K,64K,128K");
-
- /* sound hardware */
- SPEAKER(config, "mono").front_center();
- SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.25);
-}
-
-void ep804_state::ep804(machine_config &config)
-{
- digel804(config);
-
- /* basic machine hardware */
- /* Z80, X1(aka E0 on schematics): 3.6864Mhz */
- m_maincpu->set_addrmap(AS_PROGRAM, &ep804_state::z80_mem_804_1_2);
- m_maincpu->set_addrmap(AS_IO, &ep804_state::z80_io_1_2);
-
- m_acia->irq_handler().set(FUNC(ep804_state::ep804_acia_irq_w));
-
- m_ram->set_default_size("32K").set_extra_options("64K");
-}
-
-
-
-/******************************************************************************
- ROM Definitions
-******************************************************************************/
-
-/*
-"Hardware Revisions"
-For pcb 1.0, there are at least 6 hardware revisions (i.e. small changes/component changes/greenwire fixes).
-The hardware revision is shown on the sticker on the bottom.
-
-Known features:
-
-1.0 - ?
-1.1 - does not support driving pin 1 of the socket, i.e. max size is 27256; pin 1 is pulled high; several components unpopulated
-1.2 - ?
-1.3 - ?
-1.4 - ?
-1.5 - does support driving pin 1
-1.6 - does support driving pin 1
-
-*/
-
-/*
-For the 82S23A/MMI6330-equivalent mapper PROM at D30:
-
-z80 a11 -> prom a0
-z80 a12 -> prom a1
-z80 a13 -> prom a2
-z80 a14 -> prom a3
-z80 a15 -> prom a4
-
-prom d0 -> ram 6116 /CE (pin 18?) at d47
-prom d1 -> ram 6116/64 /CE (pin 20) at d46
-prom d2 -> ram 6116/64 /CE (pin 20) at d45
-prom d3 -> ram 6116/64 /CE (pin 20) at d44
-prom d4 -> ram 6116/64 /CE (pin 20) at d43
-prom d5 -> rom /CE at d42
-prom d6 -> rom /CE at d41
-prom d7 -> N/C (unused)
-
-
-On the v2.0 804-0197B mainboard, the added connector X9 (for the ram expansion daughterboard)
-near to the mapper prom at D30 has the pinout:
- ___
-|1 10
-|2 9|
-|3 8|
-|4 7|
-|5_6|
-
-1 -> pin 15 of CD74HC374E at D23 & eprom socket pin A6 (i.e. op41 bit 6)
-2 -> N/C
-3 -> ram 6116/64 /CE (pin 20) of D45 & mapper prom D2 (pin 3)
-4 -> ram 6116/64 /CE (pin 20) of D43 & mapper prom D4 (pin 5)
-5 -> CE2 (pin 26) of all four ram chips (D43 D44 D45 D46)
-6 -> +5v
-7 -> ram 6116/64 /CE (pin 20) of D44 & mapper prom D3 (pin 4)
-8 -> ram 6116/64 /CE (pin 20) of D46 & mapper prom D1 (pin 2)
-9 -> N/C
-10 -> mapper prom /CE (pin 15)
-
-If the ram expansion is not installed (i.e. only 32k of base ram on the mainboard), there is a jumper present between pins 5 and 6
-*/
-
-ROM_START(digel804) // pcb v2.0; address mapper 804-1-4
- ROM_REGION(0x10000, "maincpu", 0)
- ROM_LOAD("1-04__76f1.27128.d41", 0x0000, 0x4000, CRC(61b50b61) SHA1(ad717fcbf3387b0a8fb0546025d3c527792eb3f0))
- // the second rom here is loaded bizarrely: the first 3/4 appears at e000-f7ff and the last 1/4 appears at d800-dfff
- ROM_LOAD("2-04__d6cc.2764a.d42", 0xe000, 0x1800, CRC(098cb008) SHA1(9f04e12489ab5f714d2fd4af8158969421557e75))
- ROM_CONTINUE(0xd800, 0x800)
- ROM_REGION(0x20, "proms", 0)
- ROM_LOAD("804-1-4.82s23a.d30", 0x0000, 0x0020, CRC(f961beb1) SHA1(f2ec89375e656eeabc30246d42741cf718fb0f91)) // Address mapper prom, 82s23/mmi6330/tbp18sa030 equivalent 32x8 open collector
-ROM_END
-
-ROM_START(ep804) // pcb v1.0; address mapper 804-1-2
- ROM_REGION(0x10000, "maincpu", 0)
- ROM_DEFAULT_BIOS("ep804_v1.6")
- ROM_SYSTEM_BIOS( 0, "ep804_v1.6", "Wavetek/Digelec EP804 FWv1.6") // hardware 1.1
- ROMX_LOAD("804-2__rev_1.6__07f7.hn482764g-4.d41", 0x0000, 0x2000, CRC(2d4c334c) SHA1(1be70ed5f4f315a8d2e38a17327a049e00fa174e), ROM_BIOS(0))
- ROMX_LOAD("804-3__rev_1.6__265c.hn482764g-4.d42", 0x2000, 0x2000, CRC(9c14906b) SHA1(41996039e604011c7c0f757397f82b6479ee3f62), ROM_BIOS(0))
- ROM_SYSTEM_BIOS( 1, "ep804_v1.4", "Wavetek/Digelec EP804 FWv1.4") // hardware 1.1
- ROMX_LOAD("804-2_rev_1.4__7a7e.hn482764g-4.d41", 0x0000, 0x2000, CRC(fdc0d2e3) SHA1(da1bc1e8c4cb2a2d8cd2273f3e1a9f318ae8cb87), ROM_BIOS(1))
- ROMX_LOAD("804-3_rev_1.4__f240.2732.d42", 0x2000, 0x1000, CRC(29827e29) SHA1(4c7fadf81bcf32349a564d946f5d215de50315c5), ROM_BIOS(1))
- ROMX_LOAD("804-3_rev_1.4__f240.2732.d42", 0x3000, 0x1000, CRC(29827e29) SHA1(4c7fadf81bcf32349a564d946f5d215de50315c5), ROM_BIOS(1)) // load this twice
- ROM_SYSTEM_BIOS( 2, "ep804_v2.21", "Wavetek/Digelec EP804 FWv2.21") // hardware 1.5 NOTE: this may use the address mapper 804-1-3 which is not dumped!
- ROMX_LOAD("804-2_rev2.21__cs_ab50.hn482764g.d41", 0x0000, 0x2000, CRC(ffbc95f6) SHA1(b12aa97e23d546064f1d17aa9b90772017fec5ec), ROM_BIOS(2))
- ROMX_LOAD("804-3_rev2.21__cs_6b98.hn482764g.d42", 0x2000, 0x2000, CRC(a4acb9fe) SHA1(bbc7e3e2e6b3b1abe747380909dcddc985ef8d0d), ROM_BIOS(2))
- ROM_SYSTEM_BIOS( 3, "promicron2k_v2.3", "Celectronic Berlin/Digelec promicron 2000 FWv2.3") // hardware 1.6
- ROMX_LOAD("2023__1-03__be7d.m5l2764k.d41", 0x0000, 0x2000, CRC(8e5182f1) SHA1(e8409b6ace80fdaad862e6c06975aeabcf728f97), ROM_BIOS(3))
- ROMX_LOAD("2023__2-03__c73e.m5l2764k.d42", 0x2000, 0x2000, CRC(ff7d959b) SHA1(75718fc1d98969739911cc51b6d5fef74b530e36), ROM_BIOS(3))
- // on the promicron 2000, the bprom at d30 is an unlabeled TB18S030N part, but has the same contents as 804-1-2.mmi_6330-in.d30 below. it is possible the sticker fell off.
- ROM_REGION(0x20, "proms", 0)
- ROM_LOAD("804-1-2.mmi_6330-in.d30", 0x0000, 0x0020, CRC(30dd4721) SHA1(e4b2f5756118be4c8ab56c708dc4f42469c7e51b)) // Address mapper prom, 82s23/mmi6330/tbp18sa030 equivalent 32x8 open collector
-ROM_END
-
-
-
-/******************************************************************************
- Drivers
-******************************************************************************/
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1985, digel804, 0, 0, digel804, digel804, digel804_state, empty_init, "Digelec, Inc", "Digelec 804 EPROM Programmer", MACHINE_NOT_WORKING )
-COMP( 1982, ep804, digel804, 0, ep804, digel804, ep804_state, empty_init, "Wavetek/Digelec, Inc", "EP804 EPROM Programmer", MACHINE_NOT_WORKING )