mrp@ihlpb.ATT.COM (Prickett) (04/01/89)
I have an Atari 400 with a 16K memory board in it. I would like to
bring it up to 48K. Does anyone out there have instructions on how
I could make this modification myself? On the other hand, I have
the current catalog from Best Electronics (408-243-6950) which has
two 48K expansion options advertised on Pg. 4. Does anyone know
what the difference is between the -48K Expansion Kit (CB101052)-
and the -48K Atari Expansion Board (CO61553)- ?
I would prefer to do the mod. myself since I probably have
the spare IC's in my collection box at home and soldering irons
don't scare me but I may just order one of the items mentioned above.
(BTW - I got this as part of a package deal with some other stuff that
I just ->had to have<- and thought it would be fun to hack on.)
AdThanksVance for any info.
Marcus "Orphaned Computer" Prickett
att!ihlpb!mrp
(312) 979-6199
>>> I keep my Atari equipment right next to my TI99/4A ;^) <<<Bob_BobR_Retelle@cup.portal.com (04/02/89)
A question was raised about expanding an Atari 400 to 48K: >I have an Atari 400 with a 16K memory board in it. I would like to >bring it up to 48K. Does anyone out there have instructions on how >I could make this modification myself? On the other hand, I have >the current catalog from Best Electronics (408-243-6950) which has >two 48K expansion options advertised on Pg. 4. I used an Axlon 48K RAM board to expand my 400 years ago, and the installation was smooth and sweet, with no problems experienced at all. Because the 400 was not designed to address more than 16K directly at the RAM board socket, you needed to solder a small "template" pc board onto the bottom of the motherboard between the RAM socket and the cartridge socket to bring in the missing address lines, but that was a simple procedure. Once that was done, the 48K RAM board just plugged in and the upgrade was complete (FAR more easily done than upgrading an ST..!) I'm not familiar with the part numbers mentioned in the BEST Electronics catalog, althouth the second one: > -48K Atari Expansion Board (CO61553)- sounds like an Atari part number. I was never aware that Atari Inc. had officially released a memory upgrade for the 400, but I imagine anything is possible. The best thing might be to call BEST and see if anyone there can give any information about the upgrades. One last bit of perspective.. the Axlon 48K RAM board I installed in my 400 cost virtually the same as the 512K expansion board that I installed in my 520ST a year ago... whew... BobR
clf3678@ultb.UUCP (C.L. Freemesser) (04/03/89)
The expansion kit (CBxxxxxx) is sold by Best Electronics and is their product. The expansion board (COxxxxx) is an Atari product. I have no idea which is best, but I would lean towards the Atari board. I THINK it is just a plug in job, but can't be sure about it. =cf=