CompuServe Thread

A1000 memory expansion

10 messages in this thread
#56637From: Deryk RobossonMay 9, 1993 12:05 AM
Hello, I just picked up a Microbotics memory expansion for my A1000. It is now populated with 2 megs and I was looking for information to get the second daughter board so I can push it to 4 megs total. I was also thinking that I might not really need another board, just different chips…can someone help me out here? Any and all information can be sent to:
#57220From: R. Simonsen/MicroBoticsMay 19, 1993 1:28 AM
Deryk: if you have a StarBoard2, that only supports a total of two megabytes, not four. But you can put another SB2 on the bus and have four. –Redmond
#57420From: Deryk RobossonMay 22, 1993 12:34 AM
Redmond, Is there any way to tell what I have?? By either serial number or something on the CBoard?? I was told that this board supports 4 megs. I've had it open and it appears (I'd have to look again to be sure) that there is another plug that can be used with either another daughter board or perhaps a SCSI controller. I already have a CLtd SCSI controller on the pass through, so the controller on the ram board is out of the question (unless it can autoboot <G>). Thanks the information and I'll be looking forward to more! Deryk
#57499From: R. Simonsen/MicroBoticsMay 23, 1993 12:21 PM
Deryk: we NEVER made a board for the A1000 that supported four megs. The additional header on the SB2 is for a feature board (there were two choices: one scsi controller; the other a math chip). –Redmond
#57631From: Deryk RobossonMay 25, 1993 2:33 AM
Redmond: Hmmmmm…Whelp, someone lied to me… 🙁 Oh well, I guess that I'll have to try and get my other board to configure somehow. It's an TecMar board and it DOESN'T autoconfig. I need a memory program to go and search it out. Do you have any ideas? Math chip huh? <VBG> (Wondering where I can find one!) Deryk
#57689From: R. Simonsen/MicroBoticsMay 25, 1993 11:25 PM
Deryk: that Tecmar board will be a source of problems. We no longer have the math chip multifunction board available (and the fpu was only useful if you wrote your own software). The StarDrive scsi board was very useful. –Redmond
#57797From: Deryk RobossonMay 28, 1993 12:08 AM
Redmond: How will the Tecmar board be a problem? Meaning that I won't be able to have the memory configure somehow? And a suggestion for the StarDrive SCSI board would be to try and hunt around for one right? Or *grin* take a 500 SCSI controller and plug it in backwards to the exp port here on the 1000…(they are pin for pin compat only backwards are they not?) %% Deryk
#58079From: R. Simonsen/MicroBoticsJun 2, 1993 5:57 PM
The Tecmar memory board never was 100 percent "ok". It was a very early product that never got ready for prime-time, so to speak. –Redmond
#58165From: Deryk RobossonJun 4, 1993 12:02 AM
Redmond–Thanks for the information, I appreciate it alot. The TecMar board is now history. I sold it for the memory chips to be used. Deryk
#58280From: R. Simonsen/MicroBoticsJun 5, 1993 8:37 PM
Good move, Deryk. That sounds like an excellent trade. –Redmond