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meritm.c: Added PCB layout and pinout for the Merit CRT-250 PCB. [Brian Troha]

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Brian Troha 2012-09-13 03:16:41 +00:00
parent ec1db88620
commit 856d5a2e00
1 changed files with 60 additions and 7 deletions
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src/mame/drivers/meritm.c
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@ -3,18 +3,71 @@
Driver by Mariusz Wojcieszek
CRT 250 (basic components, also used by CRT260)
Main CPU: Z80B
Sound: Yamaha YM2149F (or compatible)
Video: 2 Yamaha V9938 (MSX2 video chip!)
Other: 2 Z80APIO (I/O and interrupt controllers)
1 8255 (I/O)
CRT-250
+-----------------------------------------------+
| JP6 JP7 |
| 81464 81464 81464 81464 DS1225Y U9 U13 |
| 81464 81464 81464 81464 Z80 PAL U10 U14 |
| 81464 81464 81464 81464 PAL U11 U15 |
| 21.47727MHz U12 U16 |
| |
| V9938 V9938 AY8930 |
| |
| Z80APIO |
| |
| P8255A Z80APIO |
| |
| |
| |----------------J3-----------------| DSW VOL |
+-----------------------------------------------+
CPU: Z80B
Video: Yamaha V9938 Video Processor x 2 (MSX2 video chip)
Sound: AY8930 (or compatible)
OSC: 21.47727MHz
Other: Z80APIO x 2 (I/O and interrupt controllers)
P8255A (I/O)
8-switch DSW (socketted)
Volume pot
Memory: Fujitsu MB81464-12 (or compatible) all socketted. The 3rd row or memory
may or may not be populated.
JP6 - 3 pin jumper: ROM size (1-2 = 27256, 2-3 = 27512)
JP7 - 3 pin jumper: RAM / ROM for U13 to U16? (1-2 = RAM, 2-3 = ROM)
J3 - 65 Pin connector:
#1 - Blue (video out) #23 - V-Meter Lamp #45 - P2 Discard 3 Switch
#2 - Green (video out) #24 - P2 Play Lamp #46 - P2 Discard 2 Switch
#3 - Red (video out) #25 - Audit Meter #2 12v #47 - P2 Discard 1 Switch
#4 - Vertical Sync #26 - Audit Meter #1 12v #48 - Adjust 3 Terminal
#5 - Horizontal Sync #27 - V-Lamp return #49 - Adjust 2 Terminal
#6 - NC #28 - Lockout Coil Option 12v #50 - Adjust 1 Terminal
#7 - Video Ground #29 - P2 Cancel Lamp #51 - Switch Common Ground
#8 - Ground #30 - Undefined Lamp #52 - Switch Common Ground
#9 - Logic (PCB) Ground #31 - P1 Cancel Lamp #53 - P2 Cancel Switch
#10 - Logic (PCB) Ground #32 - P1 Play Lamp #54 - Diagnostics Switch
#11 - +5VDC Power #33 - P1 Discard 5 Lamp #55 - Books Switch
#12 - +5VDC Power #34 - P1 Discard 4 Lamp #56 - Coin 2 Switch
#13 - +12VDC Power #35 - P1 Discard 3 Lamp #57 - Coin 1 Switch
#14 - V-Lamp #36 - P1 Discard 2 Lamp #58 - Undefined Switch
#15 - V-Lamp Return #37 - P1 Discard 1 Lamp #59 - P1 Cancel Switch
#16 - NC #38 - NC #60 - P1 Play Switch
#17 - P2 Discard 1 Lamp #39 - Speaker - #61 - P1 Discard 5 Switch
#18 - P2 Discard 2 Lamp #40 - Speaker + #62 - P1 Discard 4 Switch
#19 - P2 Discard 3 Lamp #41 - NC #63 - P1 Discard 3 Switch
#20 - P2 Discard 4 Lamp #42 - P2 Play Switch #64 - P1 Discard 2 Switch
#21 - P2 Discard 5 Lamp #43 - P2 Discard 5 Switch #65 - P1 Discard 1 Switch
#22 - V-Meter Lamp #44 - P2 Discard 4 Switch
Power & Common Ground wires are 18 gauge, all other wires are 20 or 22 gauge.
CRT 256: addon board for CRT 250, stores question roms (aka Memory Expansion board)
CRT 258: addon board for CRT 250, contains UART and Microtouch touch screen controller
CRT 260 additional components:
CRT 260 same basic components as CRT 250 with these additional components:
- Microtouch touch screen controller (SMT-3)
- PC16550 UART (for communication with touch screen controller)
- DS1204 Electronic Key (for protection)