Alphadata Zip ram card

[dvvrue95]

I recently picked up this card from ebay. It looks similar to a Alphdata Alpharam RA2-8MB (as per Big blue book of Amiga HW) but with the following differences :-

1. Only 15 of the 16 Zip sockets are fitted the last one has no evidence of soldering etc although the tracking is complete.
2. There are two jumpers for selecting 2,4,6 or 8MB and another jumper marked "on/run off/test".

The only marking is on the chip side and reads "PC0012D".
I was hoping to fit this into an unexpanded A400D (16+2Mb)after getting hold of some zip ram.

Is anyone familiar with this card or zip ram in the Amiga. I understand it was used in the A3000.

To check out photo of this card go to IMAGES/Hardware/Assorted HW+monitors on this forum (It may still be on IMAGES - Latest additions)

any feedback appreciated, Ian

[Zac67]

Sorry to disappoint you, but why waste money and effort on a Zorro II RAM card that'll slow down the A4k considerably? Especially when it uses zips which are hard to get and expensive ($10-$40 per 2 MB)?

Instead you might want to consider either a Zorro III card (pricey and rare) or - better - a CPU card with RAM extension, you can get the RAMs for (next to) nothing then.

If you do want to continue the path: the missing socket must be a - well, missing socket. It doesn't make sense to leave it out as sets of 4 zips are required to form a bank (each zip is 4 bits wide and 4 zips in parallel are 16 bits wide).

The JP3:TEST setting disable the automatic addition of the card to the memory pool, ideal for testing.