[vcf-midatlantic] B&C Microsystems EEPROM software

Herb Johnson hjohnson at retrotechnology.info
Mon May 27 15:33:14 EDT 2019


>  software
> that goes with a B&C Microsystems Inc. UP100 Universal RS232 E(E)PROM/Micro
> Programmer.

If this is some modern unit with a single-chip microcontroller, you are 
probably out of luck. If not, if it's vintage enough to have a 
microprocessor and some ROM and some RAM:

1) confirm the unit is "RS-232" or serial. Many of them used a PC 
parallel port. YOu'll have to reverse engineer the circuits at the DB25 
(or DB9) connector.

2) If it's really serial, chances are it can be operated with a serial 
terminal (or PC running a comm program). You may have to guess at the 
baud rates, it may be autobaud, using the first character received to 
determine a baud rate. "Hit return a lot.".

If it's PC parallel, you are mostly out of luck. But there's still:

3) if all that fails, Pull the PROM out of the unit - chances are it has 
one - and dump it. Of course you'll need an EPROM reader, once, to do 
this. Also note the processor in the unit. You may need to disassemble 
the code, at least a little. But it may be informative even as an ASCII 
dump.

- Um, this is the kind of thing done, lots of time in the past, to make 
sense of some unknown microcomputer. Is this "lost art" now?

Puzzled,
Herb Johnson

-- 
Herbert R. Johnson, New Jersey in the USA
http://www.retrotechnology.com OR .net


More information about the vcf-midatlantic mailing list