This is CoCoZilla

This is what started this whole website. A totally wirewrapped coco-3. No coco-3 was pirated to make this 8x10 wirewrap board. Contents: Hitachi HD63C09EP CPU, fully buffered with "F" style TTL buffers, on board IDE controller, on board WD1773 floppy controller, on board 2-megs, on board three serial ports, on board one parallel port set up as the printer port, on board 4-slot MPI-clone, buffered. Also there's a dedicated IBM-PC ISA slot for a MFM controller. Sits inside of a very large chassis, about 34" by 7" by 30". Has two IDE drives on one cable both with different drivers and descriptors for NitrOS9 v200n. One IDE drive uses all 16-bits. The other IDE drive uses only 8 bits and is partitioned with 14 partitions. Both drives are different, 540mb and 850mb, LBA mode is used for both. The fan? Because the 2-megs of 256K SIMMs gets hot! Lots of room left for further expansion. The analog parts of the coco-3 were never added, so joysticks are currently out. I now have some extra SALT chips (from junk coco-2's) to finish this board.

The GIME has a clock oscillator instead of a crystal. I've tried various frequencies from the stock 28.63636MHz to 40MHz, all work. The 40MHz makes the actual size of the viewable video much smaller compared to the standard frequency/video size.

Oh, by the way, this CoCo still runs!

This page updated: 2001/01/03