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Content 4/4


COMMODORE 64, 2MB DOUBLE CARTRIDGE (TWIN CART)



Hello,


2MB TWIN CART is a Magic Desk Compatible C64 cartridge.


Twin Card is, two 1MB card in one PCB (1MB + 1MB = 2048KB).


Commodore 64 - 2MB TWIN CART lets you play approximately 65 Games directly from cartridge (126 blocks x 65).


This is a tested and working project.



This 2MB Magic-Desk Compatible Double Cartridge is based on msolajic's (Marko Solajic) "c64-magic-desk-512k" project.

https://github.com/msolajic/c64-magic-desk-512k


I adapted the original PCB drawings, to work with only 27C801 (1MB) eprom, and then doubled the cartridge :) The rest is the same with Marko Solajic's master design. (Attention: This cartridge works only with 27C801 (1MB eprom), and it has not any jumper settings for other different kind eproms.)



For preparing 1MB eprom images you can use this software (Thanks to zzarko)

https://bitbucket.org/zzarko/magic-desk-cartridge-generator/src/master/


https://csdb.dk/release/?id=179083



You can test and see your eprom images with VICE Emulator (version 3.0 or later) (Thanks VICE team).



For testing; you can download sample 1MB eprom binary image from this link.

https://archive.org/download/27C801eprom/27C801_EPROM.zip




Many thanks to msolajic and zzarko for their great works.



Have fun

Thank you.




COMPONENTS FOR DOUBLE CARTRIDGE:


2PCS. 27C801 DIP32 (M27C801)

2PCS. 74LS02 or 74HC02

2PCS. 74LS273 or 74HC273

2PCS DIP32 WIDE IC SOCKET

2PCS. RIGHT ANGLE TACTILE BUTTON (For optional RESET)





Bill of materials used in this project

2PCS. 27C801 DIP32 (M27C801)
2
2PCS. 74LS02 or 74HC02
2
2PCS. 74LS273 or 74HC273
2
2PCS DIP32 WIDE IC SOCKET
2
2PCS. RIGHT ANGLE TACTILE BUTTON (For optional RESET)
2
May 12,2020
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    • Mr Eddie Bannister from AUSTRALIA
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