Hi,
I've followed this thread, but now I have to invoke :-)
@darkcoder
> Almost every A4000, if not all, were shipped with Hi density floppy drive (1760 Kb) and a IDE HD (min. 120M).
If I'm informed right only the A4000/040 have had the HD-floppy per default, the A4000 with the 68030 have had a DD-floppy (and a friend of mine has both versions of the A4000, the one (68030) with DD-, the other (68040) with HD-floppy). Btw: My A3000T has been equiped with a HD-floppy when I've purchased it :-)
> You have to change RAMSEY and DMAC either if you want to use the Page-detect mode with static column RAM,
> which may give you faster access or if you want to use certain cards designed for A4000, for example the crappy C= 3640.
NO, I own two A3000T's and both had been equiped with the A3640, both running RAMSEY and DMAC in the old version, without ANY problem. You have to use the revision 3.2 A3640 for an A3000, than you don't have any problems.
The static-column memory always worked in fast burst-mode.
> Dave Haynie said many times that Ramsey and DMAC should be changed in pairs ( either you have Ramsey 04 and DMAC 02 or Ramsey 07 and DMAC 04).
> Maybe a mixed pair can work in some circumstances, but do you trust it works for everyone?
Maybe, currently one of my A3000T's is equiped with a RAMSEY -07 and a DMAC -02. An A3640 accelerator is in this system and the SCSI-chip is replaced by the SCSI-II version (many people said that this doesn't work -- it works great and improves performance and stability of the SCSI-bus.
The mayor problem with the DMAC -04 is: It isn't available any more...sold out :-(
Oh and don't say: "An A3000T is completely different than an A3000 desktop." It is equal, just the layout of the motherboard is different, but the used IC's and their connections are the same, both computers are electrical identically.
EDIT: And the Zorro-slots of both A3000T's are (nearly) complete populated, I've just changed the buster of one of the machines to revision 11 to use a CyberVision64/3D graphicscard. At least, I've made the INT2-hack, my main computer is equiped with a CSPPC.
Noster
