Super VIC20 motherboard! (PAL) MOBO
Posted: Fri Oct 16, 2015 5:37 am
I'm selling a modifyed (PAL) motherboard that has ceramic EPROMs and a selectable resident RAM expansion!
Cartridge autostart will be ignored at startup pressing a key and the fire button on joystick.
With a switch is possible chose three different configuration:
1) default: a normal VIC20
2) +3K RAM (like a VIC-1210), +8K RAM in BLK5 (useful for load on it a cartridge image)
3) +16K RAM (like a VIC-1111)
But.... the VIC20 cartridge slot is free!
Remember that the VIC20 organize the "basic", "color" and "screen" memory areas depending on the RAM recognized at startup:
through the switch position you can chose one of ALL possible memory organization! (read the link)
http://www.classiccmp.org/cini/pdf/Comm ... Memory.pdf
The switch is soldered on motherboard (no holes on your VIC20!) and is selectable through the slot of Datassette connector with a screwdriver/pen/toothpick/paper clips.....
I have 2 motherboards: If you have a VIC chip MOS6561 I can send the motherboard without VIC CHIP at price of 30€ + sending cost (+ PP fees), otherwise I can send the other one (with VIC CHIP) at price of 40€ + sending cost (+ PP fees).
I prefer declare in advance that if postal service lose the tracked pack then I'll can refund only 30€.
Cartridge autostart will be ignored at startup pressing a key and the fire button on joystick.
With a switch is possible chose three different configuration:
1) default: a normal VIC20
2) +3K RAM (like a VIC-1210), +8K RAM in BLK5 (useful for load on it a cartridge image)
3) +16K RAM (like a VIC-1111)
But.... the VIC20 cartridge slot is free!
Remember that the VIC20 organize the "basic", "color" and "screen" memory areas depending on the RAM recognized at startup:
through the switch position you can chose one of ALL possible memory organization! (read the link)
http://www.classiccmp.org/cini/pdf/Comm ... Memory.pdf
The switch is soldered on motherboard (no holes on your VIC20!) and is selectable through the slot of Datassette connector with a screwdriver/pen/toothpick/paper clips.....
I have 2 motherboards: If you have a VIC chip MOS6561 I can send the motherboard without VIC CHIP at price of 30€ + sending cost (+ PP fees), otherwise I can send the other one (with VIC CHIP) at price of 40€ + sending cost (+ PP fees).
I prefer declare in advance that if postal service lose the tracked pack then I'll can refund only 30€.