Hello I was wrong, the Comspec AX1000 doesn't contain a Clock Chip it's the Comspec SA1000 (SCSI adapter) that does.
Looking around of other RTC's for the A100 I found this link:
http://www.jschoenfeld.com/home/indexe.htmJens has a Clockport Adapter for the A1000. I've never used it since when I used the A1000 I either used the Sa1000 and later thee clockport for the Rejuvinator board.
I do have Schematics for the SA1000 Board but they are in very rough shape as there are internal documents never released to customers.