Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!umich!samsung!usc!apple!oliveb!amiga!cbmvax!mks From: mks@cbmvax.commodore.com (Michael Sinz - CATS) Newsgroups: comp.sys.amiga.hardware Subject: Re: Summary of A3000 answers Message-ID: <12593@cbmvax.commodore.com> Date: 12 Jun 90 19:04:51 GMT References: <5712@hub.ucsb.edu> Reply-To: mks@cbmvax (Michael Sinz - CATS) Organization: Commodore, West Chester, PA Lines: 83 In article <5712@hub.ucsb.edu> dz@cornu.ucsb.edu (Daniel James Zerkle) writes: >Earlier, I posted a whole lot of questions. I was asked to summarize >some of the answers, so here they are: > >General: A3000 has 4 Zorro 3 slots. 2 are inline with AT slots, 1 with >video slot, 1 with CPU slot. Putting a card in a slot may cover the >inline slot, rendering it useless. The CPU slot is *NOT* inline with any of the ZORRO slots. The thing looks like this 1 Video Slot Zorro II/III (4) | | \|/ \|/ ---- ---- -------------- ------- ---- -------------- ------- ---- -------------- -------------- /|\ | PC/AT Slots (2) The CPU slot is in a completely different place. It is located under the floppy drive assembly which is on the back of the backplane. +----------------------------+ This is a TOP View... | | | | B| | | a| | | c| | | k| | | P| | | l| | | a| | | n| ............ | | e| : : | | S| : CPU Card : | | l| : : | | o| : : | | t| : CPU Slot : | | | : ---------- : | +----------------------------+ Front of the machine >RAM: Can take up to 4 ZIPS, each holding 1 or 4 megs of 32-bit RAM. >Normal Amiga RAM cards can be used, but will be 16-bit. ZIPs available >through computer shopper for < $100/meg. Can probably do ok with the >2 megs, but compiling with optimization should take a lot more. I expect >to use at least 6 megs, and go up. General rule: get as much as you can. >I think I would not worry once I got up to 7 megs. If it took only 4 ZIPs things would be very bad. (Since it takes 8 of the 256Kx4 parts to make a Megabyte...) Anyway, the A3000 takes upto 32 ZIPs. You need to expand in 8-chip banks (since you will use either 256Kx4 or 1Mx4 chips and you need x32 for a bank) The cost of the chips depend on the type. They can be either PAGE MODE DRAM or STATIC COLUMN DRAM. (DRAM or SCRAM for short) Costs I have seen were on the range of $14/chip at 256Kx4 $58/chip at 1Mx4 Since you need 8 chips at a time (for either 1Meg or 4Meg of RAM) it will cost 8 times the cost of the chip. So, with these numbers you can get upto 4 meg of FAST RAM with 256Kx4 chips or 16 meg of FAST RAM with 1Mx4 chips. >| Dan Zerkle home:(805) 968-4683 work:687-0110 | >| dz@cornu.ucsb.edu dz%cornu@ucsbuxa.bitnet ...ucbvax!hub!cornu!dz | >| Snailmail: 6681 Berkshire Terrace #5, Isla Vista, CA 93117 | >| Disclaimer: My fish are stupid. | /----------------------------------------------------------------------\ | /// Michael Sinz -- CATS/Amiga Software Engineer | | /// PHONE 215-431-9422 UUCP ( uunet | rutgers ) !cbmvax!mks | | /// | |\\\/// When people are free to do as they please, | | \XX/ they usually imitate each other. | \----------------------------------------------------------------------/