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https://github.com/holub/mame
synced 2025-05-25 07:15:25 +03:00
drw80pkr.c:
- Added Save State Support - Added Preliminary Dip Switch Settings - Corrected CPU Clock Value - Corrected Sound (Now Works) - Narrowed Down More IO R/W Areas
This commit is contained in:
Jim Stolis
parent
01afdeded1
commit
209ad304a0
@ -29,18 +29,42 @@
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#include "sound/ay8910.h"
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#include "cpu/mcs48/mcs48.h"
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#define CPU_CLOCK XTAL_7_8643MHz
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#define CPU_CLOCK XTAL_8MHz
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#define DATA_NVRAM_SIZE 0x100
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static tilemap *bg_tilemap;
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static UINT8 t0, t1, p0, p1, p2, prog, bus;
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static UINT8 attract_mode = 0;
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static UINT8 active_bank = 0;
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static UINT8 pkr_io_ram[0x100];
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static UINT16 video_ram[0x0400];
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static UINT8 color_ram[0x0400];
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/********************
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* NVRAM Handler *
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********************/
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static NVRAM_HANDLER( drw80pkr )
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{
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if (read_or_write)
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{
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mame_fwrite(file, pkr_io_ram, DATA_NVRAM_SIZE);
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}
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else
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{
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if (file)
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{
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mame_fread(file, pkr_io_ram, DATA_NVRAM_SIZE);
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}
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else
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{
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memset(pkr_io_ram, 0, DATA_NVRAM_SIZE);
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}
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}
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}
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/*****************
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* Write Handlers *
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@ -108,42 +132,59 @@ static WRITE8_HANDLER( drw80pkr_io_w )
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tilemap_mark_tile_dirty(bg_tilemap, n_offs);
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}
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// ay8910 control port
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if (p1 == 0xfc && p2 == 0xff && offset == 0x00)
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ay8910_address_w(devtag_get_device(space->machine, "aysnd"), 0, data);
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if (p2 == 0xc7)
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{
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// CRTC Register
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// R0 = 0x1f(31) Horizontal Total
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// R1 = 0x18(24) Horizontal Displayed
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// R2 = 0x1a(26) Horizontal Sync Position
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// R3 = 0x34(52) HSYNC/VSYNC Widths
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// R4 = 0x1f(31) Vertical Total
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// R5 = 0x01(01) Vertical Total Adjust
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// R6 = 0x1b(27) Vertical Displayed
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// R7 = 0x1c(28) Vertical Sync Position
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// R8 = 0x10 Mode Control
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// Non-interlace
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// Straight Binary - Ram Addressing
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// Shared Memory - Ram Access
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// Delay Display Enable one character time
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// No Delay Cursor Skew
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// R9 = 0x07(07) Scan Line
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// R10 = 0x00 Cursor Start
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// R11 = 0x00 Cursor End
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// R12 = 0x00 Display Start Address (High)
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// R13 = 0x00 Display Start Address (Low)
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}
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// ay8910_write_port_0_w
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if (p1 == 0xfe && p2 == 0xff && offset == 0x00)
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ay8910_data_w(devtag_get_device(space->machine, "aysnd"), 0, data);
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// CRTC Register
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// R0 = 0x1f(31) Horizontal Total
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// R1 = 0x18(24) Horizontal Displayed
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// R2 = 0x1a(26) Horizontal Sync Position
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// R3 = 0x34(52) HSYNC/VSYNC Widths
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// R4 = 0x1f(31) Vertical Total
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// R5 = 0x01(01) Vertical Total Adjust
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// R6 = 0x1b(27) Vertical Displayed
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// R7 = 0x1c(28) Vertical Sync Position
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// R8 = 0x10 Mode Control
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// Non-interlace
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// Straight Binary - Ram Addressing
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// Shared Memory - Ram Access
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// Delay Display Enable one character time
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// No Delay Cursor Skew
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// R9 = 0x07(07) Scan Line
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// R10 = 0x00 Cursor Start
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// R11 = 0x00 Cursor End
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// R12 = 0x00 Display Start Address (High)
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// R13 = 0x00 Display Start Address (Low)
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//if (p1 == 0xff && p2 == 0xc7)
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// CRTC Address
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//if (p1 == 0xff && p2 == 0xd7)
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if (p2 == 0xd7)
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{
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// CRTC Address
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}
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if (p2 == 0xfb) {
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pkr_io_ram[offset] = data;
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}
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if (p2 == 0xff)
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{
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if (p1 == 0xdf)
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{
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attract_mode = data; // Latch this for use in input reads (0x01 = attract mode, 0x00 = game in progress)
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}
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if (p1 == 0xdb || p1 == 0xef || p1 == 0xf7 || p1 == 0xfb)
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{
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// unknown, most likely lamps, meters, hopper etc.
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}
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// ay8910 control port
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if (p1 == 0xfc)
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ay8910_address_w(devtag_get_device(space->machine, "aysnd"), 0, data);
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// ay8910_write_port_0_w
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if (p1 == 0xfe)
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ay8910_data_w(devtag_get_device(space->machine, "aysnd"), 0, data);
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}
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}
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/****************
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@ -196,7 +237,7 @@ static READ8_HANDLER( drw80pkr_io_r )
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{
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ret = pkr_io_ram[offset];
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}
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if (p2 == 0xf7)
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{
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// unknown
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@ -209,33 +250,55 @@ static READ8_HANDLER( drw80pkr_io_r )
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if (p2 == 0xff)
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{
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// TODO: Get Input Port Values
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kbdin = ((input_port_read(space->machine, "IN1") & 0xaf ) << 8) + input_port_read(space->machine, "IN0");
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switch (kbdin)
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if (p1 == 0x5f || p1 == 0x9f || p1 == 0xdb)
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{
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// The following is very incorrect, but does allow you to
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// play slightly with very messed up hold buttons etc.
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// unknown
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}
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if (p1 == 0xfe)
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{
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// Dip switches tied to sound chip
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//
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// Open/Close the door with 'O'
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// Press '5' (twice) with door open to play credit
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// Press '1' to draw/deal
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// TODO: Unknown switch positions, but found the following flipping bits:
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// SW.? = Double Up Option
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// SW.? = Coin Denomination
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// SW.4 = Payout Type (0=cash, 1=credit)
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// SW.? = Use Joker in Deck
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//
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case 0x0000: ret = 0x00; break;
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case 0x0001: ret = 0x01; break; /* Door */
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case 0x4000: ret = 0x00; break;
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case 0x8000: ret = 0x00; break; /* Hand Pay */
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case 0x0002: ret = 0x00; break; /* Books */
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case 0x0004: ret = 0x0e; break; /* Coin In */
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case 0x0008: ret = 0x0d; break; /* Start */
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case 0x0010: ret = 0x00; break; /* Discard */
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case 0x0020: ret = 0x00; break; /* Cancel */
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case 0x0040: ret = 0x01; break; /* Hold 1 */
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case 0x0080: ret = 0x02; break; /* Hold 2 */
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case 0x0100: ret = 0x03; break; /* Hold 3 */
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case 0x0200: ret = 0x04; break; /* Hold 4 */
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case 0x0400: ret = 0x05; break; /* Hold 5 */
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case 0x0800: ret = 0x00; break; /* Bet */
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ret = 0x77; // double-up with credit payout
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}
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if ((attract_mode == 0x01 && p1 == 0xef) || p1 == 0xf7)
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{
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// TODO: Get Input Port Values
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kbdin = ((input_port_read(space->machine, "IN1") & 0xaf ) << 8) + input_port_read(space->machine, "IN0");
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switch (kbdin)
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{
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// The following is very incorrect, but does allow you to
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// play slightly with very messed up hold buttons etc.
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//
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// Open/Close the door with 'O'
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// Press '5' (twice) with door open to play credit
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// Press '1' to draw/deal
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//
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case 0x0000: ret = 0x00; break;
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case 0x0001: ret = 0x01; break; /* Door */
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case 0x4000: ret = 0x00; break;
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case 0x8000: ret = 0x00; break; /* Hand Pay */
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case 0x0002: ret = 0x00; break; /* Books */
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case 0x0004: ret = 0x0e; break; /* Coin In */
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case 0x0008: ret = 0x0d; break; /* Start */
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case 0x0010: ret = 0x00; break; /* Discard */
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case 0x0020: ret = 0x00; break; /* Cancel */
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case 0x0040: ret = 0x01; break; /* Hold 1 */
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case 0x0080: ret = 0x02; break; /* Hold 2 */
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case 0x0100: ret = 0x03; break; /* Hold 3 */
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case 0x0200: ret = 0x04; break; /* Hold 4 */
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case 0x0400: ret = 0x05; break; /* Hold 5 */
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case 0x0800: ret = 0x00; break; /* Bet */
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}
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}
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}
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@ -403,6 +466,7 @@ static MACHINE_DRIVER_START( drw80pkr )
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MDRV_PALETTE_INIT(drw80pkr)
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MDRV_VIDEO_START(drw80pkr)
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MDRV_VIDEO_UPDATE(drw80pkr)
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MDRV_NVRAM_HANDLER(drw80pkr)
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// sound hardware
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MDRV_SPEAKER_STANDARD_MONO("mono")
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