Chuck Guzis wrote:
On 3/21/2006 at 12:08 PM Richard wrote:
We must be talking about something other than the
2741 then, as it
used ASCII.
Probably. Here's 8080 code for a driver that does the conversion:
http://www.thebattles.net/sol20/ptsrc/proteus-h3/S154C%23S
The setup was popular enough that TI and National sold pre-programmed ROMs
to do the table lookup. The TMS2602JC converted ASCII to Selectric; the
MM5230FEJ did EBCDIC-to-Selectric. There were other similar parts.
Cheers,
Chuck
BTW, that code came off a Helios formatted disk, recovered using a
catweasel (MK3). At the time I was recovering the source, I figured
there was a 1% chance anyone would ever care about any of it. The
scribe who made the rosetta stone probably feels the same way. :-)