Rally X (bootleg)
| dumper | f205v |
| date | 01/06/2020 |
| emulator | |
| dev |
| name | 1703 |
| description | Rally X (bootleg) |
| year | 1980 |
| manufacturer |
Technical references
CPUs
| QTY | Type | clock | position | function |
|---|---|---|---|---|
| 1x | D780C-1 | 2b main PCB | 8-bit Microprocessor - main | |
| 1x | LM741CN | - | 12e sound PCB | Operational Amplifier - sound |
| 1x | oscillator | 18.432MHz | 4r main PCB |
ROMs
| QTY | Type | position | status |
|---|---|---|---|
| 8x | I2716 | 1.1b 2.1c 3.1e 4.1f 5.1h 6.1j 7.1k 8.1l main PCB | dumped |
| 2x | I2716 | 1.8d 2.8e sound PCB | dumped |
| 1x | unknown DIP28-600mil | 2d main PCB | empty socket, missing chip |
| 3x | unknown DIP16-300mil | 2m 3p 4n main PCB | empty sockets, missing chips |
| 4x | unknown DIP16-300mil | 7k 8m 8p 11n sound PCB | empty sockets, missing chips |
RAMs
| QTY | Type | position |
|---|---|---|
| 2x | SN7489N | main PCB 2n 2p |
| 12x | uPD2114LC-5 | main PCB 6a 6b 6c 6d 6e 6f 6h 6j 6k 6l 6m 6n |
| 1x | SN7489N | sound PCB 8k |
| 6x | MB8147E | sound PCB 9b 9c 9d 9e 9j 9k |
PLDs
| QTY | Type | position | status |
|---|---|---|---|
| 0x |
Others
1x 18x2 edge connector (sound PCB)
1x 8 legs connector (sound PCB 12h)
6x 12 pins flat cable connector from main PCB to sound PCB
1x trimmer (volume)(sound PCB 11c)
1x 8 DIP switches bank (sound PCB 11e)
1x 4 DIP switches bank (main PCB 4a)
Notes
main PCB is marked: "PHANTOM-80" on component side
sound PCB is marked: "PHANTOM-80" on component side
sound PCB is marked: "SOLDER-SIDE" on solder side
sound PCB is labelled: "F 1659" on component side
4x of the missing PROMs where checked and dumped by Joe Magiera, and they match a standard Namco Rally X romset. I think it is safe to assume that also the other missing PROMs would match.
There are 2 EPROMs different from "rallyxa" in MAME.
2.8e on sound PCB is the GFX ROM that removes "NAMCO" name from screen.
6.1j on main PCB is a CPU ROM; in the current MAME driver it gets stuck at initial boot-up sequence with an error "ROM 3" flashing on screen. I have dumped this EPROM multiple times with different Volt and Amperage settings and always get the same result, so I consider unlikely a bad dump.
update 20200607: from OSSO: EPROM 6.1j has only one bit difference from standard, and that variation makes no sense at all. It is 99,99% a problem of bit rot. Therefore I'll flag it a "bad dump".
Files
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main PCB component side
-
sound PCB component side
-
ROMs
1703
