Serial Interface Internal Printer Board – Epson Practical Peripherals

Description

Internal serial boards for your Epson dot matrix printer adds dual interfaces to them.

Information below was taken from an advertisement. All 3 boards were tested with an Epson FX-80 and an Apple IIe with a Super Serial Card was able to communicate with them. So far, I haven’t been able to turn up paper documentation regarding settings, dip switches, etc. The plugs into and sit on top of the existing parallel interface board inside the printer.

Select from the following:

A) Practical Peripherals MBS 32K/64K Microbuffer – 1982. This one printed perfectly and correctly.

B) Practical Peripherals MBS 8K Microbuffer – 1981. Prints but needs settings or switches adjusted.

C) Epson TYRS Board UNIT Y49021400002. Previous owner put a couple of labels on it. Prints but needs settings adjusted.

Epson printer board. “The Microbuffer/E is designed specifically for Epson printers. It is inserted inside all of the Epson printers. Since the Epson prints at 80 to 160 cps, it takes about 2.5 to 5 minutes to print 16,000 characters. With the Microbuffer/E, the 16,000 characters are sent in seconds. There are six models— three each for parallel and serial interfaces. MBS models indicate serial interface, and MBP models indicate parallel interface. The MBS-16K can be expanded to 32K by adding RAM chips, and the MBS-32 can be expanded to 64K by adding the Memory Expansion Module ($89). The MBS-8K with 8,192 bytes of data storage can easily be interfaced to almost any RS-232C device with hardware or software handshaking. The MBS-32/64K with up to 65,536 bytes of data adds the ETX/ACK handshaking to the standard XON/XOFF. The MBP-32K ($199) can be expanded to 64K using RAM chips. $279.00.”