CompuServe Thread

Amiga Tech Forum · Forum Business/Help

#A1000 MiniMegs Problem

12 messages in this thread

#23076From: john meggieApr 29, 1992 10:32 PM

I have just added a 2 MB Minimegs to my A1000 and now my system constantly gurus during the Startup-Sequence. I have an Adspeed processor and a 1.5 MB Insider memory board already in there. The guru codes are mostly the same: #00000004.00C05FA0 (the last four digits vary). Does anyone know if I should be adding something to my Startup-Sequence to get all these add-ons to work together. Any help would be appreciated.

#23080From: Michael GerardApr 29, 1992 11:44 PM

Sounds like you have a memory address conflict. Are you using AddMem to add the minimegs memory in? You may need to change the address where that loads. Michael ….from the north coast

#23102From: john meggieApr 30, 1992 5:33 PM

Well Mike, I am not using AddMem but I have found the program. Assuming I would put in my Startup-Sequence, what addresses should I be using? Also how do I refer to the specific board(s) in the script? Thanks for taking the time to help.

#23126From: Michael GerardApr 30, 1992 7:51 PM

John…. I don't know what memory addresses you should use. Someone more technically inclined will have to help you out with that. Michael ….from the north coast

#23236From: Richard EricksonMay 4, 1992 2:11 PM

Just a hunch, you might be overloading the 68000 socket. Since the AdSpeed and Insider both go into the same socket. I assume you have the Adspeed stacked on top of the Insider. I don't know if the Minimegs goes into the socket or on the side. Richard

#23251From: john meggieMay 5, 1992 8:47 PM

Thanks for the suggestion but the Minimegs goes into the connector on the side of the A1000. Without the Minimegs, the system works fine. I feel it is a memory address contention problem but I don't know how to fix it. I'm going to try posting this message in another area. I'm not getting the usual avalance of advice. Thanks again and TTYL. John

#23259From: David ArtMay 5, 1992 11:32 PM

John, The combination of the Minimegs and the Insider might be too many devices hung on the 68000 bus. As I recall, things were really hit-or-miss on an A1000 with more than one expansion device. Do you know if your A1000 has had the PAL grounding modification? Sometimes this will help things a bit. David

#23265From: Michael GerardMay 6, 1992 7:04 AM

David.. I know that multiple devices are 'hit or miss' on the A1000, but fwiw, I did have a Michigan Insider 1.5 meg working smoothly an 2 meg add-on board hooked to the bus… It was just a matter of using AddMem to configure the external memory to the proper location. Michael ….from the north coast (go Cavs!)

#23512From: john meggieMay 14, 1992 6:37 PM

OH WOW! The PAL grounding fix – I forgot about that. That's gotta be it. Will give it a try and let you know the result. Thanks for the response (been away on business).

#23520From: David ArtMay 15, 1992 12:12 AM

You're quite welcome. 8) I know all about that being away on business stuff – just got back tonight from a business trip myself. Hope that the PAL grounding solves the problem for you.

#23298From: Richard EricksonMay 8, 1992 12:21 AM

Do you have the PALs grounded? Richard

#23513From: john meggieMay 14, 1992 6:37 PM

Richard, that's gotta be it. I forgot about the PAL grounding problem. Thanks.