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27C512,27C256, 27C128 and 27C64 问客户需要哪一个? |
x 1 | |
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.1uf Capacitor Ceramic |
x 1 | |
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2.54mm Male Header Pins |
x 8 | |
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Jumper |
x 3 |
Tandy Diagnostic Cartridge for Color Computer 1, 2 and 3 - Coco
Make a simple cartridge to test the basic functionality of your Coco. From ROM to RAM. Video, serial, sound keyboard and more.
Check out my video at https://youtu.be/0L6OtoY7bHo
ROM Files are attached to this project or can be downloaded from https://archive.org/details/coco-cart-diagnostic-rom
Requires 1 EPROM. 27c512 is recommended to use my exact rom, but you can use others. If you do use a 27c512, you can burn 4 programs to the one rom (at 16kb intervals on the chip) and change them by changing the jumpers.
4k:
* Install 2732 at U1
* JP2, JP3 not used
8k:
* Install 2764 at U2
* Set JP2 to 1
* Set JP3 to 1
16k:
* Install 27128 at U2
* Set JP2 to 1
* Set JP3 to 1
32k:
* Install 27256 at U2
* Select 16k bank with JP2
* Set JP3 to 1
64k:
* Install 27512 at U2
* Select 16k banks with JP2 and JP3
Special thanks to for the board design
https://github.com/linuxha/CoCoEPROMpak
Thanks to Gadget Reboot for introducing me to the board.
https://www.youtube.com/watch?v=7ILHTM3gZes
Tandy Diagnostic Cartridge for Color Computer 1, 2 and 3 - Coco
*PCBWay community is a shared platform and we are not responsible for any design issues.
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- EBRAHIM 4dmax2000 Apr 23,2024
- (DIY) C64iSTANBUL Apr 22,2024
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