On Tue, 30 Apr 2002, Ethan Dicks wrote:
>
> --- "Douglas H. Quebbeman" <dquebbeman_at_acm.org> wrote:
> > > ...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...
>
> 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
> > 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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Received on Wed May 01 2002 - 23:26:07 BST