There are always situations where you need a different kernel in the Commodore C64. Be it to simply test something, or because you don't want to open the computer. And so I had the idea to make such a small plug-in card myself. And for a simple Mdoul, it doesn't even need many parts.
Not everyone shares my preference for SMD. And I promised some time ago to make a version of the TriMod CBM adapter without SMD. And I would like to introduce this to you in this article. One could also say, the fasting time is over, it may be again something more...
"Oh no, not another joystick adapter" - I can already hear the prophecies of doom from the background. But this time it's not about another USB joystick adapter for the PC, but about a joystick adapter for all home computers with a D-SUB9 interface, like Atari and Commodore. And for the Commodore there is even a game which supports this adapter. Because with this adapter you can operate the gamepads of the Sony Playstation 2 on the home computers mentioned.
IEEE-488 floppies for the CBM world are unfortunately very rare and very expensive to get. Why not just take a cheap VC1541 and expand it with an IEEE-488 port, but without losing the serial IEC port. With the TriMod CBM adapter the floppy can do both. It can be connected e.g. to a C64 via the serial connection, or to a CBM 8032 via the IEEE-488 port.
This article is about the reproduction of an old IEEE-488 interface card for the Commodore C64 and Commodore C128. This card was very handy if you had the Commodore SFD-1001 floppy, which had only one IEEE-488 connector. But also the old CBM floppy drives could be connected to a C64 or C128. Since such hardware has slowly become rare and hard to get, I have copied the board.
Commodore floppy disks with an IEEE-488 interface have unfortunately become very rare in the meantime and are sometimes sold at top prices. At that time Commodore brought the model 2031 onto the market. It was basically a 1541 with modified electronics. The differences between the two models is extremely small. At that time, this already led some resourceful hobbyists to take a close look at the circuit diagram of the 2031 and to make a corresponding adapter.