MIKBUG Replacement for SWTPC 6800

 SWTPC 6800 MIKBUG ROM EmulatorSWTPC MIKBUG ROM Emulator pins

The MIKBUG ROM Emulator board replaces the MCM6830 ROM with a 2716 EPROM. This allows the MIKBUG ROM in a SWTPC 6800 Computer MP-A Microprocessor system board to be replaced with a different monitor such as SWTBUG.

The SWTBUG 6800 ROM Monitor was Southwest Technical Products Corporation's second generation monitor. It supports the MP-S Serial Interface at 9600 baud, MIKBUG was limited the the MP-C at 300 baud. It also has a routine that will boot floppy disk such a SWTPC MF-68 or my DC-5 controller. A description of SWTBUG can be found here.

The 2716 EPROM holds 2048 bytes of data while the MP-A can only address 1024 bytes of data in the onboard ROM. Two different monitor programs can be stored in one EPROM and the desired monitor is selected with a jumper. This allows both MIKBUG and SWTBUG to be stored in one 2716.

ROM Emulator Users GuideUsers Guide (230k PDF)

ExpressPcb Design Files, 2003 Revision (30k zip)

EPROM Data (6k TXT)

SWTPC 6800 Page
Michael Holley's SWTPC Collection Home Page
This page was last edited August 14, 2013

Copyright 2005, Michael Holley