1 May
2002
1 May
'02
4:26 p.m.
On Tue, 30 Apr 2002, Ethan Dicks wrote:
--- "Douglas H. Quebbeman" <dquebbeman(a)acm.org> wrote:
Naturally. I wouldn't expect a 16550 to sprout clock lines and
stop being asynchronous. I guess I should have been a little
clearer on my inqury. I do not know of any off-the-shelf sync
serial cards for the PC, so I didn't know the best way to phrase
the question.
There are/were apparently a number of Apple LocalTalk cards made
for PC usage. One of them is the PC MacBridge by Tangent Technologies -
now defunct - which is a short 8-bit card based on the Zilog Z8530APC
chip. A google search will disclose multiple others also.
- don
...will
"Hercules" talk BISYNC or SNA down a sync serial pipe?
I'd think you'd either need a PC serial card that uses a
USART instead of a UART, or a convert of some kind... but
I don't know how the converter would supply synch... But it
wouldn't be too hard to kludge up a design for a
single-port 8251a-based serial card...
If I were going to build hardware, I'd probably go with the ZSIO
because a) I have some and b) I programmed one at the register
level for a living 10 years ago, and know how to make it tick.
More to the point: does Hercules support any off-the-shelf sync
cards? I'd rather this be as light on the customization as possible.
-ethan
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