Adding stuff to the µLind
To make it easier on myself I desided to design the main board with expansion headers for graphics and audio. And for good measure I added in a general expansion port to be able to add whatever to the system.
So the expansions that I have planned is:
- SID audio board
- OPL2/3 audio board
- VDC (MOS 8568) graphics board
- Yamaha V9938 graphics (maybe…)
- IO board (8 in, 8 out, analog inputs)
- MIDI interface
- Floppy Disk
- IDE HD interface
- Parallel port interface (Centronics compatible)
- IEC card
So for the Audio Expansion Port (AEP) I have started designing 2 different cards so far:
- A dual SID (MOS 8580 or ARM2SID) bord with connector for the pot signals to the joy port. There is also a connector for the ARM2SID to be able to utilize the most of it. This one is almost finished.
- A OPL3 (YMF262 – YAC512) based audio board, for that go old Sound Blaster Pro sound we all loved.
And for the Video Expansion Port (VEP) I have started designing 2 different graphics cards:
- A VDC (MOS 8568) based card with 8kB onboard Character ROM and RGBI output, compatible with Commodore Monitors.
- A V9958 based card, 192kB onboard video ram, with RGB output