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Author Topic: Mega-Midget Racer issue  (Read 1687 times)

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Offline C64erTopic starter

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Mega-Midget Racer issue
« on: October 06, 2011, 02:23:59 PM »
Hello all,
Need some help\advise with my A-2000.

My system is:
Running OS3.1
A-2000 Rev 4.3
Upgraded to full ECS
SupraRAM 2000 w\8MB
GVP HDC +2 w\2MB Quantum Fireball ST 3.2GB
Mega-Midget Racer 68030\25Mhz w\2MB

According to the MMR manual, I add to the top of the Startup-Sequence:
CSA-MMR SROM SRAM DRAM. Later in the manual is states that if I'm running OS 2.0 (or greater I assume) to omit SRAM from the command, and change a jumper for 512kb Kickstart ROM. Finally it states that if you are using a DMA controller with FFS to add to the Mount List for each partition using FFS, MASK = 0XFFFFFF to utilize the 32 bit RAM.

Now doing all this yields an unstable system with frequent lockups and software errors. Dropping the DRAM from the command line fixes this issue but of course the 2MB of RAM is also dropped. I also noticed the old MASK = value was 0xFFFFFFFE, the manual has me drop the FE off the end.
The manual also states the Mountlist is located in DEVS/Mountlist, mine is in the root of System:

Another issue is with the CSA-MMR command added to Startup-Sequence I get annoying pop up telling me something is trying to close a window, if I add the CSA-MMR line to User-Startup then it does not happen.

Thanks!
Dan
 

Offline C64erTopic starter

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Re: Mega-Midget Racer issue
« Reply #1 on: October 06, 2011, 02:41:27 PM »
Thanks #6, I'll give that a try at lunch.

Dan
 

Offline C64erTopic starter

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Re: Mega-Midget Racer issue
« Reply #2 on: October 07, 2011, 02:12:32 PM »
Thanks for the tips folks,
I need to open her up this weekend and double check all the jumpers. And go from there.

Dan