22 Jan
2014
22 Jan
'14
1:26 p.m.
Tony Duell wrote:
Hmm. And why you think that?
Could we please talk again when you lookad at the register description and
compared it bit for bit like me?
I found exactly one difference so far.
The 7201 seems to have a TX char counter which the SIO hast not,
but the most is identical.
The 7201 has a interrupt vector engine that fits to the 8086/88 and
supports only the INT Mode0 on Z80. This and the different Pinout is the
main Difference.
Maybe.
Thanks tony, I've got a datasheet for the 7201 and the 7201A, None that
mentioned a 7201C...
If your Databook has the pinout, it may be the shorter way if you compare
it with the pinout here:
http://www.alldatasheet.com/datasheet-pdf/pdf/129324/NEC/UPD7201A.html
THX,
Holm
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Hi guys,
I've looked trough my Z80 Stuff some minutes before b'cause a friend wanted
an Z80A CPU, ok found it. In a Bag 6 uPD780-1 which are also Z80A's, I found
two uPD7201C. I've googeled some time before that the uPD7201A is some
Z80-SIO - alike, has an other Pinout for example and should be compatible
Well, it's synchronous/asynchronous serial chip, but I don't think it's
very similar to the Z80-SIO to some Intel
chip which is mostly a clone of the Z80-SIO also.
Intel 8274? (maybe to give the Intel world acess to a usable
USART to this time)
But:
I can't find a datashet for the uPD7201C using google or the usual
suspects, can someone help out here? I think possibly this isn't just a
I have an NEC databook containign this device, and I can type in the
piunout if you don't find it anywhere else. Let me know..
-tony