The PT-B3R is improved by having a baud rate generator on the motherboard. Otherwise the circuitry is the same as the SWTPC MP-B3
PT-B3R has the same mounting holes as SWTPC MP-B3 and MP-MP Motherboard.
Fits SWTPC 6809 cabinet with separate covers for each IO board.
Either the MB or CPU board can feed SS30 baud rate lines. Selectable by shunts.
Can support S0-S3 for A16-A19 to support 1MB memory on SS50 BUS.
8 SS30 and 8 SS-50 slots.
Has same power connector as came with SWTPC MP-B3 motherboard.
Downloads
MP-B3R-ASM | Assembled - with power wiring ready to install. | $145 |