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Last modified 2026-02-02

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SWTPC 6800 (SouthWest Technical Products Corporation)

A picture of SWTPC 6800 (SouthWest Technical Products Corporation)

SPECIFICATIONS

GENERAL
Type:8-bit home/hobbyist computer
CPU:Motorola MC6800 @ 1 MHz
Operating system(s):Motorola Mini-Operating System
Memory:ROM: 1 KB
RAM: 128 bytes on CPU board and 4 KB on RAM board (Expandable to 32 KB)
Power supply:Mains. (Unregulated +8 VDC and ±12 VDC from internal PSU)
Current drain / power consumption:Max 10 A @ 8 VDC
Dimensions (W*H*D):384*178*387 mm (15.12*7*15.25")
Weight:? Kg (? lb)




I/O
Keyboard:No keyboard. Terminal based.
Graphics: No graphics. Terminal based.
Audio:No
Storage: Optional tape recorder
Optional floppy drives
External I/O ports / connectors: Everything is optional!
Other:SS-30 and SS-50 bus slots




MISCELLANEOUS
Manufactured:USA, 1975-1979 (Discontinued)
Additional info:
Related documents:
Modifications and fixes:
Notable "ham" software: QTH locator calculator
OSCAR antenna control
CW/RTTY RX and TX
Contest log
Reviews:
Some options / Accessories:
AC-30
BFD-68
M-16-A
MF-68
MP-8M
MP-09
MP-16
MP-A
MP-B
MP-C
MP-LA
MP-M
MP-MX
MP-N
MP-P
MP-R
MP-S
MP-T
Cassette interface
Floppy drive controller (By Smoke Signal Broadcasting)
Memory board with 16K SRAM (By Smoke Signal Broadcasting)
Disk system
Memory board with 8K SRAM
6809 CPU board
Memory board
CPU system board
Mother board
Serial control interface for TTY current loop or RS232 terminal interface
Parallel interface with MC6821 PIA
Memory board with 2K SRAM. Expandable to 4K
2K SRAM expansion kit for MP-M
Calculator interface board
Power supply
EPROM programmer board
Serial interface with MC6850 ACIA
Interrupt timer board