diff options
author | Guru <mr-t-guru@users.noreply.github.com> | 2015-10-21 11:12:31 +0800 |
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committer | Guru <mr-t-guru@users.noreply.github.com> | 2015-10-21 11:12:31 +0800 |
commit | 4a07516daaffb9234c7f911a950b0fee7e81dcd3 (patch) | |
tree | d2c04004e3c7b5a7311b8da2302ae7ffa6498538 /src/mame/drivers/saturn.c | |
parent | d27612c1fab586506e364e994eefed553086615d (diff) |
saturn.c: documented the h/w (nw)
Diffstat (limited to 'src/mame/drivers/saturn.c')
-rw-r--r-- | src/mame/drivers/saturn.c | 393 |
1 files changed, 389 insertions, 4 deletions
diff --git a/src/mame/drivers/saturn.c b/src/mame/drivers/saturn.c index c28e60051f4..8a4adeb116f 100644 --- a/src/mame/drivers/saturn.c +++ b/src/mame/drivers/saturn.c @@ -2,15 +2,400 @@ // copyright-holders:David Haywood, Angelo Salese, Olivier Galibert, Mariusz Wojcieszek, R. Belmont /************************************************************************************************** - Sega Saturn & Sega ST-V (Sega Titan Video) HW (c) 1994 Sega - Driver by David Haywood, Angelo Salese, Olivier Galibert & Mariusz Wojcieszek SCSP driver provided by R. Belmont, based on ElSemi's SCSP sound chip emulator Many thanks to Guru, Fabien, Runik and Charles MacDonald for the help given. -=================================================================================================== - +*************************************************************************************************** + +Sega Saturn +(C) Sega 1994/1995/1996/1997 + +The Sega Saturn is a 32-bit 5th-generation home video game console that was developed by Sega and released +on November 22nd 1994 in Japan, May 11th 1995 in North America, and July 8th 1995 in Europe as the successor +to the Sega Genesis. The Saturn has a dual-CPU architecture and a total of eight processors. +The games are on CD-ROM. + +Basic Hardware: + +Processors (8) +---------- +Two Hitachi SH2 32-bit RISC @ 28.63636MHz +One Hitachi SH1 32-bit RISC @ 20.0MHz +Two 32-bit video display processors (VDP 1 / VDP 2) +One Saturn Control Unit processor (SCU) @ 14.31818MHz +One Motorola 68EC000 sound processor @ 11.2896MHz +One Yamaha YMF292-F DSP sound processor @ 28.63636MHz + +Memory +------ +16 Megabits DRAM +12 Megabits VRAM (Video RAM) +4 Megabits Audio DRAM +4 Megabits CD-ROM Cache DRAM +256 Kbits battery-backed SRAM + +Video +----- +VDP 1 +- 32-bit video display processor +- Sprite, polygon, and geometry engine +- Dual 256Kb frame buffers for rotation and scaling effects +- Texture Mapping +- Goraud Shading +- 512Kb cache for textures +VDP 2 +- 32-bit background and scroll plane video display processor +- Background engine +- 5 simulataneous scrolling backgrounds +- 2 simultaneous rotating playfields +- 200,000 Texture Mapped Polygons/Second +- 500,000 Flat Shaded Polygons/Second +- Up to 60 frames per second animation +- 24-bit True Color Graphics +- 16 Million Available Colors +- 320x224, 640x224, and 720x576 Resolution + +Audio +----- +Motorola 68EC000 sound processor @ 11.2896MHz +Yamaha 24-bit Digital Signal Processor @ 28.63636MHz +- 32 PCM (Pulse Code Modulation) Channels +- 8 FM (Frequency Modulation) Channels +- 44.1 kHz Sampling Rate + +Storage +------- +CD-ROM (2X) +- 320 Kb/Second transfer speed +- Compatible with Audio CD, CD+G, CD+EG, CD Single (8cm) + and with optional hardware; Video CD, Photo CD & Digital Karaoke +- Optional additional memory cartridge + +Input/Output +------------ +High speed serial communications port +Internal 32-bit expansion port +Internal Multi AV port for optional Video CD (MPEG) decoder board +Composite video & stereo audio (Standard) +Optional RF(TV), S-Video & RGB outputs +2 ports for analog control pad, light gun or other controllers + + +PCB Layouts +----------- +There were *many* main board revisions. The two general 'sizes' are documented here. + +Small board (VA revision documented) +----------- +Main board with a separate small sub-board for the controller ports, power LED and reset button. +The power supply is slightly longer than the main board, has a 5 pin connector and outputs 9VDC, 5VDC and 3.3VDC + +837-12126 IC BD SATURN MAIN VA SG +171-7128B (C) SEGA 1995 PC BD SATURN MAIN VA SG +(This PCB was found in a USA Saturn, Model MK-80000, also known as Saturn model 1 with BIOS MPR-17941) + +837-12135 IC BD SATURN MAIN VA PAL SD +171-7131A (C) SEGA 1995 PC BD SATURN MAIN VA PAL SD +(This PCB was found in a PAL Saturn, Model MK-80200-50, also known as Saturn model 1 PAL with BIOS MPR-17942) + +(note both of these PCBs listed above are almost identical) + +|VIDEO--COMM-----------------------------------------------| +| CART_SLOT SW1 BATTERY | +|ADAC CXA1645M |--------| |-------| 20MHz | +| SW2 |315-5688| |YGR019B| TC514260 | +| ^4502161 | | | | |-------| | +| ^4502161 |--------| |--------| |-------| |HD6437097 | +| |--------| |315-5890| *D489020 | | | +| |315-5883| | | 81141625 81141625 |-------| | +| | | |--------| CARD_SLOT | +| |--------| ^4502161 HC08 | +| ^5241605 ^4502161 |----| |----| |--------| | +| 514270 |--------|HC04 |SH-2| |SH-2| |315-5914| | +| |-----| |315-5687|HC04 |----| |----| |--------| | +| |68000| | | |------|32.768kHz | +| |-----| |--------| 315-5744 LS245 TC514260 | +| ^74HC157 315-5746 |------| ^62257 ^ROM CN4| +| CN3 CN7 &14.31818MHz CN2 LS245 TC514260 | +|----------------------------------------------------------| +Notes: (all IC's shown. ^ denotes these parts are on the other side of the PCB) + ROM - SOP40 mask ROM for BIOS. + Chip is pin-compatible with Toshiba TC574200 or MX27C4100 and can be read with a simple 1:1 DIP40 to SOP40 adapter + JAPAN BIOS marked 'MPR-17940-MX' or 'MPR-17940-T' + USA BIOS marked 'MPR-17941-MX' or 'MPR-17941-T' + PAL BIOS marked 'MPR-17942-MX' or 'MPR-17942-T' + T = Toshiba, MX = Macronix. Both contain identical data + Other BIOSes known to exist include: + (These are mainly on the very MPR-16605-T + early version main boards VA0/VA1 MPR-16606-T + and are all DIP chips) MPR-16606A-T + MPR-17577-T + EPR-17578 HI-SATURN BOOT ROM VER 1.01 SUM AA44 '95 1/27 (EPROM) + 81141625 - Fujitsu 81141625-017 128k x16-bit x 2 banks (4Mbit) SDRAM \ compatible + 5241605 - Hitachi HM5241605TT17S or HM524165CTT17S 128k x16-bit x 2 banks (4Mbit) SDRAM / + The two 81141625 are the WORK RAM HIGH and the two TC514260 (near the ROM) make up the WORK RAM LOW + The 5241605 is the VDP1 Sprite RAM + D489020 - NEC D489020GF-A15 SGRAM (probably 8Mbit). *- This single chip is replaced by two 81141625 IC's on some boards + 4502161 - NEC D4502161G5-A12 or Sanyo LC382161T-17 64k x16-bit x 2 banks (2Mbit) SDRAM + Two chips are used for the VDP1 Frame RAM, the other two are for the VDP2 Video RAM + TC514260 - 256k x16-bit (4Mbit) DRAM. Any of the following compatible chips are used.... + Hitachi HM514260AJ7 / HM514260CJ7 + Toshiba TC514260BJ-70 + Fujitsu 814260-70 + Mitsubishi M5M44260CJ + Samsung KM416C256BJ-7 + Hyundai HY514260B JC-70 + Vanguard VG264260AJ + Panasonic MN414260CSJ-07 + HM514270 - Hitachi HM514270 256k x16-bit (4Mbit) DRAM, used for the sound WORK RAM + 62257 - Epson SRM20257LLM10 32k x8-bit (256kbit) battery-backed SRAM (also used SONY CXK58257AM-10L, NEC UPD43257B-10LL, UM62257AM-70LL) + ADAC - Dual CMOS Audio DAC. Either Burr-Brown BBPCM1710U or Philips TDA1386T + CXA1645M - Sony CXA1645M RGB to Composite Video Encoder + SH-2 - Hitachi HD6417095 SH-2 CPU. Clock input 28.63636MHz (14.31818*2) + 68000 - Motorola MC68EC000FN12 CPU. Clock input 11.2896MHz + & - Master Clock. 14.31818MHz for USA revision or 17.7344MHz for PAL revision + 315-5744 - Sega 315-5744 Hitachi HD404920 microcontroller used as the System Manager and Peripheral Controller (SMPC) + 315-5746 - Sega 315-5746 Phase-locked Loop (PLL) clock generator IC + 315-5883 - Sega 315-5883 Hitachi HD64440 Video Display Processor 1 (VDP1). Earliest revision is 315-5689 + 315-5687 - Sega 315-5687 Yamaha YMF292-F Saturn Custom Sound Processor (SCSP). Clock input 28.63636MHz (14.31818*2) + 315-5688 - Sega 315-5688 System Control Unit (SCU). Clock input 14.31818MHz + 315-5890 - Sega 315-5890 Video Display Processor 2 (VDP2) + 315-5914 - Sega 315-5914 DRAM controller. Earliest revision is 315-5778. Later revision is 315-5963 + HD6437097 - Hitachi HD6437097F20 SH1 (SH7034 family) microcontroller with 64k internal ROM. Clock input 20.000MHz + YGR019B - Hitachi YGR019B CD-Subsystem LSI. Earlier revision is YGR019A. Later revision combines this IC and the SH1 together + into one IC (YGR022 315-5962). The SH1 and the YGR019B make up the 'CD Block' CD Authentication and CD I/O data controller. + Another of it's functions is to prevent copied CDs from being played + VIDEO - 10-pin Mini-DIN video output port + COMM - Communication port + CARD_SLOT - Expansion slot for MPEG decoder card and other optional expansions + CART_SLOT - Expansion slot for plug-in RAM or ROM carts + SW1 - Master reset switch accessible behind the card slot/battery cover. Pressing this clears the battery-backed SRAM, resets the system + and the user has to set the language, date and time + BATTERY - CR2032 3V lithium coin battery. When the system is off the battery provides power to the backup SRAM and SMPC which contains an RTC + SW2 - CDROM cover open/close detection switch + CN2 - 24-pin flat cable connector for control port board + CN3 - 5-pin power connector + CN4 - Flat cable connector for CDROM data cable. On some main board revisions the connector is reversed and the cable is folded so it + is also reversed/flipped 180 degrees at the other end + CN7 - 5-pin connector for CDROM power + + +Control Port board +------------------ +839-0820 EXPORT +839-0821 PAL +PC BD SATURN PIO VA EXPORT 171-7112A (C) SEGA 1995 CSPD CAD-TEAM +|---------------------------------| +| FLAT-CABLE | +| | +| GREEN-LED RED-LED RESET| +|--PORT1-----PORT2----------------| Notes: + PORT1/2 - Controller ports for controller/joystick/lightgun etc + GREEN-LED - Power LED + RED-LED - CDROM drive access LED + RESET - Push-button reset switch + FLAT-CABLE - 24-pin flat cable joined to main board CN2 + + +Large board (VA7 revision documented) +----------- +This is a single main board containing everything. + +837-12643 IC BD SATURN MAIN VA7 USA SD +171-7208C (C) SEGA 1996 PC BD SATURN MAIN VA7 USA SD +(This PCB was found in a USA Saturn, Model MK-80000A, also known as Saturn model 2 with BIOS MPR-17941) + +837-12992 IC BD SATURN MAIN VA7 PAL +171-7424A (C) SEGA 1996 PC BD SATURN MAIN VA7 PAL +(This PCB was found in a PAL Saturn, Model MK-80200A-50, also known as Saturn model 2 PAL with BIOS MPR-17942) + +(note both of these PCBs listed above are almost identical) + +|VIDEO--COMM-----------------------------------------------| +| CART_SLOT BATTERY | +| SW2 |--------| | +|ADAC RGB |315-5966| |--------| ^TC514260 | +| | | |YGR022 | | +| |--------| |315-5962| | +| |--------| | +| |--------| |--------| 20MHz | +| |315-5687| |315-5964| CARD_SLOT | +| | | | | | +| |--------| |--------| |----| LS245 HC08 | +| ^HM514270 ^524165 HC04 |SH-2| | +| ^5221605 ^5221605 |----| TC514260 | +| ^5221605 ^5221605 | +| |--------| TC514260 | +| |-----| |315-5883| HC04 | +| |68000| | |&14.31818MHz |----| |--------| | +| |-----| |--------| %CY2292 |SH-2| |315-5977-01 | +|CN3 |------| |----| |--------| | +| 315-5744 62257 CN4| +| CN7 |------| | +|--| 32.768kHz LS245 81141625 81141625 ROM |--| + | GREEN-LED RESET | + |-------------------PORT1-----PORT2------------------| +Notes: (all IC's shown. ^ denotes these parts are on the other side of the PCB) + ROM - SOP40 mask ROM for BIOS. + Chip is pin-compatible with Toshiba TC574200 or MX27C4100 and can be read with a simple 1:1 DIP40 to SOP40 adapter + JAPAN BIOS marked 'MPR-17940-MX' or 'MPR-17940-T' + USA BIOS marked 'MPR-17941-MX' or 'MPR-17941-T' + PAL BIOS marked 'MPR-17942-MX' or 'MPR-17942-T' + T = Toshiba, MX = Macronix. Both contain identical data + 81141625 - Fujitsu 81141625-017 128k x16-bit x 2 banks (4Mbit) SDRAM + The two 81141625 are the WORK RAM HIGH and two TC514260 (near the SH-2) make up the WORK RAM LOW + 524165 - Hitachi HM524165CTT17S 128k x16-bit x 2 banks (4Mbit) SDRAM. This is the VDP1 Sprite RAM + 5221605 - Hitachi HM5221605TT17S 64k x16-bit x 2 banks (2Mbit) SDRAM + Two chips are used for the VDP1 Frame RAM, the other two are for the VDP2 Video RAM + TC514260 - 256k x16-bit (4Mbit) DRAM. Any of the following compatible chips are used.... + Hitachi HM514260AJ7 / HM514260CJ7 + Toshiba TC514260BJ-70 + Fujitsu 814260-70 + Mitsubishi M5M44260CJ + Samsung KM416C256BJ-7 + Hyundai HY514260B JC-70 + Vanguard VG264260AJ + Panasonic MN414260CSJ-07 + HM514270 - Hitachi HM514270 256k x16-bit (4Mbit) DRAM, used for the sound WORK RAM + 62257 - Epson SRM20257LLM10 32k x8-bit (256kbit) battery-backed SRAM (also used SONY CXK58257AM-10L, NEC UPD43257B-10LL, UM62257AM-70LL) + ADAC - Dual CMOS Audio DAC. Either Burr-Brown BBPCM1710U or Philips TDA1386T + RGB - RGB to Composite Video Encoder with PAL & NTSC output capability. IC is either Fujitsu MB3516A or ROHM BH7236AF + SH-2 - Hitachi HD6417095 SH-2 CPU. Clock input 28.63636MHz (14.31818*2) + 68000 - Motorola MC68EC000FN12 CPU. Clock input 11.2896MHz + CY2292 - Cypress CY2292SC-04 PLL clock generator IC. % = On the VA7 PAL version this chip is replaced with the older Sega PLL (315-5746) + & - Master Clock. 14.31818MHz for USA revision or 17.7344MHz for PAL revision + 315-5744 - Sega 315-5744 Hitachi HD404920 microcontroller used as the System Manager and Peripheral Controller (SMPC) + 315-5883 - Sega 315-5883 Hitachi HD64440 Video Display Processor 1 (VDP1). + 315-5687 - Sega 315-5687 Yamaha YMF292-F Saturn Custom Sound Processor (SCSP). Clock input 28.63636MHz (14.31818*2) + 315-5964 - Sega 315-5964 Video Display Processor 2 (VDP2) + 315-5966 - Sega 315-5966 System Control Unit (SCU). Clock input 14.31818MHz + 315-5977-01 - Sega 315-5977-01 DRAM controller + YGR022 - Hitachi YGR022 Sega 315-5962 single IC containing CD-Subsystem LSI and Hitachi SH-1 microcontroller with 64k internal ROM. Clock input 20.000MHz + VIDEO - 10-pin Mini-DIN video output port + COMM - Communication port + CARD_SLOT - Expansion slot for MPEG decoder card and other optional expansions + CART_SLOT - Expansion slot for plug-in RAM or ROM carts + BATTERY - CR2032 3V lithium coin battery. When the system is off the battery provides power to the backup SRAM and SMPC which contains an RTC + SW2 - CDROM cover open/close detection switch + CN3 - 4-pin or 5-pin power connector + CN4 - Flat cable connector for CDROM data cable + CN7 - 5-pin connector for CDROM power + PORT1/2 - Controller ports for controller/joystick/lightgun etc + GREEN-LED - Power LED + RESET - Push-button reset switch + + +Motherboard List +---------------- +Board types used in Model 1: VA0 to VA3 +Board types used in Model 2: VA2 to VA15 +If the VA-number is an even number the board uses a single 8Mbit SGRAM for some of the work RAM, if an odd number it uses two 4Mbit SDRAMs. +Note there are MANY missing. Please help to update this list if you have info for others not listed here. + +837-11076 IC BD SATURN MAIN VA0.5 171-6874E PC BD SATURN MAIN VA0.5 (C) SEGA 1994 +837-11076-01 IC BD SATURN MAIN VA0 CCI 171-6874D PC BD SATURN MAIN VA0.5 (C) SEGA 1994 +837-11493 IC BD SATURN MAIN VA0 PAL 171-6963B PC BD SATURN MAIN VA0 PAL (C) SEGA 1995 +837-11892-01 PAL 171-7069B MAIN (C) SEGA 1995 +837-12126 IC BD SATURN MAIN VA SG 171-7128B PC BD SATURN MAIN VA SG (C) SEGA 1995 +837-12126 IC BD SATURN MAIN VA SG 171-7128C PC BD SATURN MAIN VA SG (C) SEGA 1995 +837-12133 IC BD SATURN MAIN VA SD 171-7130C PC BD SATURN MAIN VA SD (C) SEGA 1995 +837-12134 IC BD SATURN MAIN VA USA SD 171-7130C PC BD SATURN MAIN VA USA SD (C) SEGA 1995 +837-12135 IC BD SATURN MAIN VA PAL SD 171-7131A PC BD SATURN MAIN VA PAL SD (C) SEGA 1995 +837-12459 IC BD SATURN MAIN VA6 JPN SG 171-7207A PC BD SATURN MAIN VA6 SG (C) SEGA 1996 +837-12468 IC BD SATURN MAIN VA8 JPN OCU 171-7209C PC BD SATURN MAIN VA8 OCU (C) SEGA 1996 +837-12643 IC BD SATURN MAIN VA7 USA SD 171-7208C PC BD SATURN MAIN VA7 USA SD (C) SEGA 1996 +(none) 171-7291B PC BD SATURN MAIN VA9 PAL (C) SEGA 1996 +(none) 171-7291C PC BD SATURN MAIN VA9 (C) SEGA 1996 +837-12650 IC BD SATURN MAIN VA13 JPN 171-7???? PC BD SATURN MAIN VA13 (C) SEGA 1996 +837-12845 IC BD SATURN MAIN VA13 USA 171-7???? PC BD SATURN MAIN VA13 (C) SEGA 1996 +837-12992 IC BD SATURN MAIN VA7 PAL 171-7424A PC BD SATURN MAIN VA7 PAL (C) SEGA 1996 +837-13100 IC BD SATURN MAIN VA13 PAL 171-7455D PC BD SATURN MAIN VA13 PAL (C) SEGA 1997 +837-13137 IC BD SATURN MAIN VA15 JPN 171-7462B PC BD SATURN MAIN VA15 (C) SEGA 1997 + + +Motherboard Variations Summary +------------------------------ + +NTSC +---- +- VA0: First revision. CD Block (YGR019A & HD6437097) is on a daughterboard. Power supply mounted on top casing. + Has 40 pin DIP EPROM or mask ROM for BIOS. Larger board with control ports on the main board. Uses JVC CD drive units ENR-007B/ENR-007D. +- VA1: marked as 'VA' on the main board. Power supply is now bottom mounted and plugs in on top into 5 pins on the main board. Most sub boards + integrated into the main board except the controller ports which are on a small sub board. BIOS is SOP40 mask ROM located on the bottom side of + the main board. Battery-backup RAM and the VRAM are also on the bottom side of the main board. Uses ENR-007D CD drive units. +- VA2 & VA3: Mostly same as VA1. VA2 is marked as 'VA SG' (uses SGRAM), and VA3 is marked as VA SD (uses SDRAM). Uses ENR-011A CD drive units. +- VA4 & VA5: Same as VA2 and VA3 but in a cheaper model 2 case. Uses ENR-011A CD drive units. +- VA6: One single PCB for everything. Uses an off-the-shelf PLL chip (CY2292). Some custom chips have been revised and have different 315-xxxx numbers. + BIOS and battery-backed RAM moved to the top side of the main board. Power supply has 4 pins and generates only +5VDC. Uses ENR-013A CD drive unit + or Sanyo 610-6185-30 CD drive unit. +- VA6 & VA7 has the CD Block reduced to a single IC (YGR022). Some custom chips have been revised and have different 315-xxxx numbers. +- VA8 & VA9 still has the CD Block ICs separated. VA9 uses the old type PLL chip (315-5746). +- VA10 to VA15: uses HQA-001A CD drive unit or Sanyo 610-6294-30 / 610-6473-30 CD drive unit. 68000 & YMF292 integrated into a single IC (315-5965). + The integrated sound IC has a bug with certain 68000 commands. +- VA11 has a small daughter board mounted on the main board to fix a design fault (possibly to fix the above sound IC problem?) +- VA11+ boards use a smaller TSSOP20 audio DAC, VA10 uses the old one. +- VA12, VA14 and VA16 might not exist. +- VA13 fixes the design fault on VA11 so the patch board is no longer needed. +- VA15 integrates the two SH-2 main CPUs into a larger single IC (HD6417098 / 315-6018). + +PAL (only the main differences to the above are listed) +--- +- No PAL board ever used SGRAM. +- All PAL boards have an odd VA-number. +- All PAL boards have a 5 pin power connector and use a 5 pin power supply. +- All PAL boards use different region & video output jumpers when compared to NTSC machines. +- All PAL boards use a 17.7344MHz master clock (NTSC units use 14.31818MHz). +- All PAL boards replace the composite sync output on the A/V OUT connector with 9VDC which is used for SCART auto switching. The 9VDC power comes from + pin 5 of the power supplies with a 5 pin connector. Composite sync is still there at TP4 on the bottom of the board but not wired into the A/V OUT port. +- VA0 PAL - has extra jumpers to set the master clock divider (JP18 & 19), functional but unpopulated 50/60Hz switch on the back (SW4). +- VA1 PAL - unpopulated 50/60Hz switch on the back (SW4). There is a design fault as it is still connected to the master clock divider select pin. + Therefore the switch does not work on its own, you have to cut or raise & ground the PLL pin 1 for the switch to work. +- VA3 PAL - has extra jumpers to set the master clock divider (JP20 & 21), functional but unpopulated 50/60Hz switch on the back (SW4). +- VA5 PAL - same as VA3 PAL. +- VA7 PAL - Unlike NTSC boards, this still uses the old PLL (315-5746) and pin 1 is connected to the PAL/NTSC and 50/60Hz selection pins on the video + encoder and the VDP2. +- VA9 - same as VA7 PAL. +- VA13 PAL - Other than a 5 pin power connector it's identical to the NTSC VA13 board. +- VA17 PAL - probably the final revision specifically for EU/PAL regions. Differences are unknown. + +Power supplies +-------------- +Type A is used on VA0 main boards and is mounted to the top casing. Pinout is GND, GND, 3.3V, 5V, (empty pin), 9V. (5 pins total) +Type B is used on VA1 to VA5 main boards and is bottom mounted. Pinout is GND, GND, 3.3V, 5V, 9V. (5 pins total) +Type C is used on VA6+ main boards and is bottom mounted. Pinout is GND, GND, 5V, 5V (4 pins total). +PAL units use either Type B or a 5-pin version of Type C power supplies. On earlier boards such as 'VA' the 9V pin is connected to pin 1 of the CD ROM +unit power supply cable connector on the main board. On later boards it's also connected to the A/V OUT port for SCART auto switching. + +CD Drives +--------- +With 20 pin flat cable connector, VA0-VA1: +- JVC ENR-007B EMW10447-003E +- JVC ENR-007B EMW10447-004E +- JVC ENR-007D EMW10447-005E +- JVC ENR-007D EMW10447-006E +- Hitachi JA00292 + +With 21 pin flat cable connector, VA2-VA5: +- JVC ENR-011A EMW10589-002 +- JVC ENR-011A EMW10589-003 + +With 21 pin flat cable connector, VA6-VA9: +- JVC ENR-013A EMW20035-002 610-6185-20 +- Sanyo 610-6185-30 (sometimes with an extra protection board where the flat cable plugs in) + +With 21 pin flat cable connector, VA10-VA15: +- JVC HQA-001A HQ100002-002 610-6294-20 +- Sanyo 610-6294-30 \ +- Sanyo 610-6473-30 / (sometimes with an extra protection board where the flat cable plugs in) +These are the same as the VA6-VA9 units but lack an oscillator and have a white border on the edges of the PCB. + +Optical pickups used - JVC drive: Optima-6, Hitachi drive: HOP-6, Sanyo drive: SF-P101 is used in the 610-6185-30 + +**************************************************************************************************** + +Emulation Notes: -To enter into an Advanced Test Mode,keep pressed the Test Button (F2) on the start-up. -Memo: Some tests done on the original & working PCB,to be implemented: -The AD-Stick returns 0x00 or a similar value. |