0.143u2 [Guru]
< Korea >
NOTE:
- YouTube: https://www.youtube.com/watch?v=9kTrPQ82xK8
WIP:
- 0.182: Quiz Punch use new MC68705P5 core, MCU now gets timer interrupts correctly [Vas Crabb]. Replaced M68705 CPU3 with MC68705P5.
- 0.180: Dumped the 68705 MCU for "Quiz Punch", protected by an epoxy block [Guru]. Hooked up MCU to the driver, improved graphics and sound. Flag EEPROM dumps as bad [Luca Elia]. Added M68705 (4MHz) MCU. Changed YM2203 sound clock speed to 4MHz and visible area to 256x384.
- 10th October 2016: Guru - Regarding the Quiz Punch news below, it looks like my MCU dump was ok. Luca did his usual magic and it's partly working in MAME now.
- 24th September 2016: Guru - I'm currently in the middle of re-organising all the PCBs and stacking them on a metal shelf rack so things can be found quickly. I checked one PCB that was not labelled, and it identified as 'Quiz Punch'. I dumped it years ago but checking in MAME I saw that there were missing ROMs. That's because the game has an epoxy block on it so I decided to open it. It was actually really easy to open with just a flat bladed screwdriver. After cracking the sides off the plastic case, the inside was revealed and the PCB inside it was just glued on. I put the screwdriver between one of the chips and the top of the plastic epoxy block cover, twisted the screwdriver and the whole thing just popped off in one piece. The pics show the parts inside. A Z80B at 4MHz, 4 logic chips, a 68705P5 microcontroller and an unknown DIP8 chip. Notice the writing from the Z80 has stuck to the glue inside the epoxy block cover haha! I removed the 68705 and read it and something came out so maybe the dump is OK. Not sure, as subsequent reads gave nothing. Now onto the DIP8 chip... I pulled it off and on the bottom side of the chip it has the part number and pin-1 notch! So this chip was upside-down. In this configuration the chip is non-standard and can't be read as-is. I bent the legs out straight and soldered it into a larger socket (also fixing the broken leg at the same time) then just read it as a 93C46 EEPROM. The dump was good!
- 0.143u2: Guru added 'Quiz Punch' (Space Computer 1988).
- 15th August 2009: Guru - From Korea thanks to gp-lee we got Quiz Punch (Space Computer 1988).
