PALs are combinational logic, such as (using address lines)? A4
and A3 and not A2 and A1 and not A0.
To decode serial data, you need flip-flops, some storage to
convert serial to parallel and then act on that.
CPLD's can do that, but with most PAL chips, depending on what's
internal, it would be difficult.
Generally, PALs are used to decode address lines to enable a
specific chip.
Harvey
On 2/22/2022 1:26 PM, Lothar baier
wrote:
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I know it is labeled RS232 but
unfortunately that does not mean a regular RS232 Cable can be
used , I looked through the service manual for the 8340B and
it indicates the pin numbers on the rear panel connector of
the 8340 but it refers to control bit numbers which would
indicate a parallel port rather than serial , also the 8516
service manual indicates that the pins are connected to a PAL
on the doubler control board , I am a RF not a digital guy but
I don¡¯t think you can use a PAL as a serial decoder
?
Sent from for Windows
?
?
On Mon, Feb 21, 2022 at 07:20 AM, Lothar
baier wrote:
08516-60009
You might a standard RS232 cable. It's
labeled "CABLE
ASSEMBLY, RS232" in the 8516A S-Parameter Test Set
Operating and Service Manual.
-George
