Add PCB layout for the main board in chinagat.cpp

This patch updates the PCB Layout comment to have layout
information and simple explanations for the main board.
This commit is contained in:
Yukari Tamura 2019-08-27 01:18:57 +09:00
parent dd113af151
commit b2047b7efc

View File

@ -73,6 +73,71 @@ Dip locations and factory settings verified with China Gate US manual.
PCB Layout
----------
TA-0023-P1-03 (Main Board)
|-----------------------------------------------------|
| | J1 | | J2 | |
| ---------------- ---------------- |
| X1 |
| |
| |
| LH0080A |
| |
| |
| HD68B09EP HD68B09EP |
| 23J0-0 (main) (sub) 23J6-0 |
| |
| YM2151 23J5-0 |
| 23J1 23J2 23J3-0 23J4-0 |
| -0 -0 |
| |
| |
| YM3012 M6295 |
| |
| |
| X2 |
| |
| SW2 SW1 |
| |
| |
| VR1 |-------------------| |
| | || JAMMA | |
|----------------|---||--------------|----------------|
Clock
X1 - 3.579545MHz
X2 - 1.056MHz
CPUs
HD68B09EP - HITACHI 6809E for main
HD68B09EP - HITACHI 6809E for sub
LH0080A - SHARP Z80 for sound
Sound
YM2151 - YAMAHA FM sound
YM3012 - YAMAHA DAC for YM2151
M6295 - OKI ADPCM
PROM
23J5-0 - user1 (82S129)
ROMs
23J0-0 - soundcpu EPROM
23J1-0 - oki mask ROM
23J2-0 - oki mask ROM
23J3-0 - maincpu EPROM
23J4-0 - sub EPROM
23J6-0 - gfx1 mask ROM
SRAMs
not listed yet
Others
VR1 - Speaker volume
SW1 - DIPSW1
SW2 - DIPSW2
JAMMA - Standard JAMMA connector
TA-0023-P2-03 (Video Board)
|-----------------------------------------------------|
| | J2 | | J1 | |
@ -104,29 +169,29 @@ TA-0023-P2-03 (Video Board)
|-----------------------------------------------------|
Clock
X1 - 12MHz
X1 - 12MHz
PROM
23JB-0 - user1 (82S131)
23JB-0 - user1 (82S131)
ROMs
23J7-0 - gfx2 mask ROM
23J8-0 - gfx2 mask ROM
23J9-0 - gfx2 mask ROM
23JA-0 - gfx2 mask ROM
TJR-100 - gfx3 custom ROM (undump)
23J7-0 - gfx2 mask ROM
23J8-0 - gfx2 mask ROM
23J9-0 - gfx2 mask ROM
23JA-0 - gfx2 mask ROM
TJR-100 - gfx3 custom ROM (undump)
SRAMs (2KBx8bits) Motorola MCM2016HN55, SANYO LC3517?
IC7 - ?
IC40 - bgvideoram
IC70 - ?
IC75 - ?
IC78 - ?
IC106 - ?
IC7 - ?
IC40 - bgvideoram
IC70 - ?
IC75 - ?
IC78 - ?
IC106 - ?
Connectors
J1, J2 - 50pins, almost same assignments with ones for Double Dragon.
At this moment, 17pin is known to be used for TRJ-100.
J1, J2 - 50pins, almost same assignments with ones for Double Dragon.
At this moment, 17pin is known to be used for TRJ-100.
TRJ-100 pin assigns