23 Jan
2014
23 Jan
'14
11:55 a.m.
On Jan 21, 2014 3:11 PM, "Tony Duell" <ard at p850ug1.demon.co.uk>
wrote:
I think you mean 7201, not 7210 here. The 7210 is a GPIB interface chip.
Many, many years ago I bought a 7210 to add the GPIB prot to an FTS-88
machine (a strange 8088 box runnign CP/M-86 (FTOS-C) from 8" floppies)
-tony
Well, it's synchronous/asynchronous serial
chip, but I don't think it's
very similar to the Z80-SIO
The 8274 is a second-source of the 7210 (and/or 7210A), so either they're
both similar to the Z80-SIO, or neither is.
In my opinion they are very similar to the Z80-SIO, but definitely not
interchangeable. It seems a near certainty that the engineers at NEC that
designed the 7210 deliberately copied much of the architectural design from
Zilog, and fairly little from any other existing UART or USART.
to some Intel chip which is mostly a clone of the
Z80-SIO also.
Intel 8274?