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decocass: add a few enters in driver notes

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hap 2022-02-16 12:40:04 +01:00
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commit 653009f048
1 changed files with 44 additions and 32 deletions
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src/mame/drivers/decocass.cpp
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@ -1,45 +1,58 @@
// license:GPL-2.0+
// copyright-holders:Juergen Buchmueller, David Haywood
/***********************************************************************
/*******************************************************************************
DECO Cassette System driver
by Juergen Buchmueller
with contributions by:
David Widel
Nicola Salmoria
Aaron Giles
Brian Troha
Fabio Priuli
Lord Nightmare
The Dumping Union
Team Japump!!!
Hau
Jean-Francois Del Nero
Omar Cornut
Game Preservation Society
Joseph Redon
The DECO cassette system consists of three PCBS in a card cage:
Early boardset: (1980-1983) (proms unknown for this boardset, no schematics for this boardset)
One DE-0069C-0 RMS-3 pcb with a 6502 processor, D8041C MCU (DECO Cassette control), two ay-3-8910s, and one 2708 eprom holding the audio bios. (audio, needs external amp and volume control)
One DE-0068B-0 DSP-3 pcb with a 'DECO CPU-3' custom, two 2716 eproms. (main processor and bios, graphics, dipswitches?)
with contributions by: David Widel, Nicola Salmoria, Aaron Giles, Brian Troha,
Fabio Priuli, Lord Nightmare, The Dumping Union, Team Japump!!!, Hau,
Jean-Francois Del Nero, Omar Cornut, Game Preservation Society, Joseph Redon
The DECO cassette system consists of three PCBs in a card cage:
**** Early boardset: (1980-1983) (proms unknown for this boardset, no schematics for this boardset) ****
One DE-0069C-0 RMS-3 pcb with a 6502 processor, D8041C MCU (DECO Cassette control),
two ay-3-8910s, and one 2708 eprom holding the audio bios. (audio, needs external
amp and volume control)
One DE-0068B-0 DSP-3 pcb with a 'DECO CPU-3' custom, two 2716 eproms. (main processor
and bios, graphics, dipswitches?)
One DE-0070C-0 BIO-3 pcb with an analog ADC0908 8-bit adc.
One DE-0066B-0 card rack board that the other three boards plug into.
This boardset has two versions : MD, known as "shokase" in Japan, and MT, known as "daikase" which is using bigger data tapes. (MT was only sold in Japan, not emulated yet)
This boardset has two versions: MD, known as "shokase" in Japan, and MT, known as "daikase",
which is using bigger data tapes. (MT was only sold in Japan, not emulated yet)
Later boardset: (1984 onward, schematic is dated October 1983)
One DE-0097C-0 RMS-8 pcb with a 6502 processor, two ay-3-8910s, two eproms (2716 and 2732) plus one prom, and 48k worth of 4116 16kx1 DRAMs; the 6502 processor has its own 4K of SRAM. (audio processor and RAM, Main processor's dram, dipswitches)
One DE-0096C-0 DSP-8 board with a 'DECO 222' custom on it (labeled '8049 // C10707-2') which appears to really be a 'cleverly' disguised 6502, and two proms, plus 4K of sram, and three hm2511-1 1kx1 srams. (main processor, sprites, missiles, palette)
One DE-0098C-0 B10-8 (BIO-8 on schematics) board with an 8041, an analog devices ADC0908 8-bit adc, and 4K of SRAM on it. (DECO Cassette control, inputs, tilemaps, headlights)
One DE-0109C-0 card rack board that the other three boards plug into. (fourth connector for DE-109C-0 is shorter than in earlier versions)
**** Later boardset: (1984 onward, schematic is dated October 1983) ****
The actual cassettes use a custom player hooked to the BIO board, and are roughly microcassette form factor, but are larger and will not fit in a conventional microcassette player.
Each cassette has one track on it and is separated into clock and data by two Magtek IC in the player, for a form of synchronous serial.
The data is stored in blocks with headers and CRC16 checksums.
The first block contains information such as the region (A:Japan, B:USA, C:UK, D:Europe) and the total number of blocks left to read.
The last physical block on the cassette is a dummy block not used by the system. (only used to mark the end of last block)
One DE-0097C-0 RMS-8 pcb with a 6502 processor, two ay-3-8910s, two eproms (2716 and 2732)
plus one prom, and 48k worth of 4116 16kx1 DRAMs; the 6502 processor has its own 4K of SRAM.
(audio processor and RAM, Main processor's dram, dipswitches)
***********************************************************************/
One DE-0096C-0 DSP-8 board with a 'DECO 222' custom on it (labeled '8049 // C10707-2') which
appears to really be a 'cleverly' disguised 6502, and two proms, plus 4K of sram, and three
hm2511-1 1kx1 srams. (main processor, sprites, missiles, palette)
One DE-0098C-0 B10-8 (BIO-8 on schematics) board with an 8041, an analog devices ADC0908 8-bit adc,
and 4K of SRAM on it. (DECO Cassette control, inputs, tilemaps, headlights)
One DE-0109C-0 card rack board that the other three boards plug into. (fourth connector for
DE-109C-0 is shorter than in earlier versions)
The actual cassettes use a custom player hooked to the BIO board, and are roughly microcassette
form factor, but are larger and will not fit in a conventional microcassette player. Each cassette
has one track on it and is separated into clock and data by two Magtek IC in the player, for
a form of synchronous serial. The data is stored in blocks with headers and CRC16 checksums.
The first block contains information such as the region (A:Japan, B:USA, C:UK, D:Europe)
and the total number of blocks left to read. The last physical block on the cassette is a dummy
block not used by the system. (only used to mark the end of last block)
*******************************************************************************/
#include "emu.h"
#include "includes/decocass.h"
@ -388,7 +401,6 @@ static INPUT_PORTS_START( cdsteljn )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_MAHJONG_G ) PORT_PLAYER(1)
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("P1_MP2")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_MAHJONG_H ) PORT_PLAYER(1)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_MAHJONG_I ) PORT_PLAYER(1)