rmichel@pro-grouch.cts.com (Russel Michel) (10/23/89)
>There USED to be a few memory cards which supported a ROMDISK option on >their card - I think with some sockets. Are these boards still for sale, >and has anyone contacted them to see if they will be coming out with some >roms? One of the cards which could use ROMs as a GS ROMDISK was the AST RAMStakPlus. It has four sockets for 27xxx EPROMs or 28xxx EEPROMs. Use of EPROMs required the use of an EPROM programmer ("burner") to put the desired code on the chips, after using the ROMDISKFILES SETUP routine supplied with the card. EEPROMs can be programmed by the card itself. I bought a set of 28256 EEPROMs and loaded them with ProDOS8 w/ Bird's Better Bye, BASIC.SYSTEM, and a tiny APPLESOFT program which asked if I wanted to enter BASIC, QUIT to ProDOS, or (in those p days) startup ProDOS16 from disk. It worked like a champ. Startup time from ROMDISK was insignificant; ProDOS was up and my little menu program was running before the monitor was warmed up. I stopped using the RAMStak's ROMDISK though, after I acquired a RAMKeeper. (two ROMDISKs cannot be used) I have no idea if there are any other similar boards. AST no longer makes the RAMStakPlus (or any other Apple II products), but there are still cards available, as I recall recently seeing them advertized in one of the fine-print ads in the back of InCider. I called AST shortly after I purchased the card to see if they were going to produce any pre-propgrammed ROMs for use on their card; their reply was that they designed the card for the end user to do it himself as he so desired, which satisfied me. (After all, I managed to do it successfully; if I can, even a monkey could do it!) ==--------------------------------------------------------------------------== == The above is given freely, so keep in mind the words of Lazarus Long: == == "Anything free is worth what you pay for it" == == == == All versions of standard disclaimers apply, because I cannot guarantee == == that anything I right is write. (See what I mean?!?!) == ==--------------------------------------------------------------------------== UUCP: crash!pro-grouch!rmichel ARPA: crash!pro-grouch!rmichel@nosc.mil INET: rmichel@pro-grouch.cts.com
gt0t+@ANDREW.CMU.EDU (Gregory Ross Thompson) (10/23/89)
I've got one of the RamStack Plus cards from AST which supports the
ROM disk, and I'd kinda like to get the chips for it, but I cannot
find them anywhere. Does anyone have any suggestions?
I need 200ns EEPROMS 32Kb 28 pin DIP That's number 28256.
If anyone knows where I can get 4 of 'em, please let me know.
-Greg T.
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========================================================================rmichel@pro-grouch.cts.com (Russel Michel) (10/24/89)
Network Comment: to #5747 by gt0t+@andrew.cmu.edu > I've got one of the RamStack Plus cards from AST which supports the >ROM disk, and I'd kinda like to get the chips for it, but I cannot >find them anywhere. Does anyone have any suggestions? > I need 200ns EEPROMS 32Kb 28 pin DIP That's number 28256. > If anyone knows where I can get 4 of 'em, please let me know. > -Greg T. I can't believe that there's another RAMStakPlus owner out there!!! I was beginning to think that I was the only one! As for the EEPROMS, they can be hard to come by (at least the right ones for our RSPs are). I bought mine (four 28256s) about two years ago from an outfit called Wyle (or maybe Wylie?) Electronics...can't remember where they are, though. A tech support guy from Ared me to them. The chips cost me about $20 each. Don't know if that'll help much though. I just took a look in the '89 Jameco catalog..they only carry the smaller 28xx chips. JDR doesn't list any 28xx anymore. Good luck. Russ ==--------------------------------------------------------------------------== == The above is given freely, so keep in mind the words of Lazarus Long: == == "Anything free is worth what you pay for it" == == == == All conceivable disclaimers apply, because I cannot guarantee that == == anything I right is write. (See what I mean?!?!) == == == == America Online: RusselM GEnie: R.Michel2 == ==--------------------------------------------------------------------------== UUCP: crash!pro-grouch!rmichel ARPA: crash!pro-grouch!rmichel@nosc.mil INET: rmichel@pro-grouch.cts.com