diff options
author | 2014-04-06 18:47:51 +0000 | |
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committer | 2014-04-06 18:47:51 +0000 | |
commit | 4985d470e0892816a0e16077c8e868cd6d9d2b57 (patch) | |
tree | 18186c25200d232fb9e6428448e4d9e810a1ab22 /src | |
parent | d455e3806a4d34c7bd6172c0a3fbe5c396c768d5 (diff) |
(MESS) tandy2k: Hacked in some video. (nw)
Diffstat (limited to 'src')
-rw-r--r-- | src/emu/video/crt9007.c | 2 | ||||
-rw-r--r-- | src/mess/drivers/tandy2k.c | 43 | ||||
-rw-r--r-- | src/mess/includes/tandy2k.h | 1 |
3 files changed, 39 insertions, 7 deletions
diff --git a/src/emu/video/crt9007.c b/src/emu/video/crt9007.c index 0aa9b0b96f8..e302545f8db 100644 --- a/src/emu/video/crt9007.c +++ b/src/emu/video/crt9007.c @@ -398,6 +398,7 @@ inline void crt9007_t::update_dma_timer() inline void crt9007_t::recompute_parameters() { +#ifdef UNUSED_FOR_NOW // check that necessary registers have been loaded if (!HAS_VALID_PARAMETERS) return; @@ -441,6 +442,7 @@ inline void crt9007_t::recompute_parameters() m_vsync_timer->adjust(m_screen->time_until_pos(0, 0)); m_vlt_timer->adjust(m_screen->time_until_pos(0, m_vlt_start), 1); m_drb_timer->adjust(m_screen->time_until_pos(0, 0)); +#endif } diff --git a/src/mess/drivers/tandy2k.c b/src/mess/drivers/tandy2k.c index 20e36262238..bf9fefebeef 100644 --- a/src/mess/drivers/tandy2k.c +++ b/src/mess/drivers/tandy2k.c @@ -335,6 +335,34 @@ INPUT_PORTS_END // Video +UINT32 tandy2k_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + const pen_t *pen = m_palette->pens(); + address_space &program = m_maincpu->space(AS_PROGRAM); + + for (int y = 0; y < 400; y++) + { + UINT8 cgra = y % 16; + + for (int sx = 0; sx < 80; sx++) + { + offs_t addr = 0x1ec00 + (((y / 16) * 80) + sx) * 2; + UINT8 vidla = program.read_word(addr); + UINT8 data = m_char_ram[(vidla << 4) | cgra]; + logerror("y %u sx %u addr %06x vidla %02x data %02x\n",y,sx,addr,vidla,data); + + for (int x = 0; x < 8; x++) + { + int color = BIT(data, 7); + bitmap.pix32(y, (sx * 8) + x) = pen[color]; + data <<= 1; + } + } + } + + return 0; +} + WRITE_LINE_MEMBER( tandy2k_state::vpac_vlt_w ) { m_drb0->ren_w(state); @@ -721,15 +749,16 @@ static MACHINE_CONFIG_START( tandy2k, tandy2k_state ) MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) // not accurate - MCFG_SCREEN_SIZE(640, 480) - MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1) - MCFG_SCREEN_UPDATE_DEVICE(CRT9021B_TAG, crt9021_t, screen_update) + MCFG_SCREEN_SIZE(640, 400) + MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 400-1) + //MCFG_SCREEN_UPDATE_DEVICE(CRT9021B_TAG, crt9021_t, screen_update) + MCFG_SCREEN_UPDATE_DRIVER(tandy2k_state, screen_update) MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") - MCFG_DEVICE_ADD(CRT9007_TAG, CRT9007, XTAL_16MHz*28/16/10) + MCFG_DEVICE_ADD(CRT9007_TAG, CRT9007, XTAL_16MHz*28/20/8) MCFG_DEVICE_ADDRESS_MAP(AS_0, vpac_mem) - MCFG_CRT9007_CHARACTER_WIDTH(10) + MCFG_CRT9007_CHARACTER_WIDTH(8) MCFG_CRT9007_INT_CALLBACK(DEVWRITELINE(I8259A_1_TAG, pic8259_device, ir1_w)) MCFG_CRT9007_VS_CALLBACK(DEVWRITELINE(CRT9021B_TAG, crt9021_t, vsync_w)) MCFG_CRT9007_VLT_CALLBACK(WRITELINE(tandy2k_state, vpac_vlt_w)) @@ -749,10 +778,10 @@ static MACHINE_CONFIG_START( tandy2k, tandy2k_state ) MCFG_CRT9212_WEN2_VCC() MCFG_CRT9212_DOUT_CALLBACK(WRITE8(tandy2k_state, drb_attr_w)) - MCFG_DEVICE_ADD(CRT9021B_TAG, CRT9021, XTAL_16MHz*28/16) + MCFG_DEVICE_ADD(CRT9021B_TAG, CRT9021, XTAL_16MHz*28/20) MCFG_VIDEO_SET_SCREEN(SCREEN_TAG) - MCFG_TIMER_DRIVER_ADD_PERIODIC("vidldsh", tandy2k_state, vidldsh_tick, attotime::from_hz(XTAL_16MHz*28/16)) + MCFG_TIMER_DRIVER_ADD_PERIODIC("vidldsh", tandy2k_state, vidldsh_tick, attotime::from_hz(XTAL_16MHz*28/20/8)) // sound hardware MCFG_SPEAKER_STANDARD_MONO("mono") diff --git a/src/mess/includes/tandy2k.h b/src/mess/includes/tandy2k.h index 3d2324ad6a4..290743dcdc9 100644 --- a/src/mess/includes/tandy2k.h +++ b/src/mess/includes/tandy2k.h @@ -125,6 +125,7 @@ public: optional_shared_ptr<UINT8> m_char_ram; virtual void machine_start(); + UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); void update_drq(); void dma_request(int line, int state); |