Hardware

HM-68 – A ZIP archive so you can build your own 6802 "monster." It includes schematics, layouts, bill-of-materials, a monitor, and two small high-level languages: Tiny BASIC and VTL-2.

HM-68-ROMS – UPDATED 21.NOV.23 A ZIP archive with two ROM images (and source code), both anchored by SWTBUG: Bank 0 has the TSC Debugger suite, TSC Micro BASIC Plus, and Tom Pittman's Tiny BASIC for 6800; Bank 1 has MITS Altair 680b BASIC 1.1. SWTBUG's 'Z' command is mapped to a menu in Bank 0, and loads Altair BASIC in Bank 1.

COMPACT FLASH CARD DRIVE – Plans for building a simple CF card storage device for the Monster-68. It requires RAM from $A000-$BFFF, but the filesystem I have for it (LIL' FILE) is only 1.5 KB, so it can be easily relocated to, say, $7000 or up from there. The LIL' FILE software can be found in the utilities section of this site.

HM-68 ROMS WITH LIL' FILE – A binary ROM image for the Monster that incorporates the LIL' FILE filesystem for CF cards, referenced above. This ROM is also two-sided: Bank 0 has TSC Debugger suite and TSC Micro BASIC Plus, while Bank 1 has MITS Altair 680 BASIC 1.1. The 'D' command in SWTBUG was patched to send it to LIL' BUG, located at $F200, in both 16K banks. The 'Z' command still brings up a menu or loads Altair BASIC.