#System cmos checksum bad series#
There are quite a few Atari websites that mention the series (some even go into some good detail with extra photos) but I also found a lot of details missing and conflicting information most likely from them just simply copying what they found on another site.
The alternative is going around and copying information I find on the net on the ABC's but then I would be doing what frustrated me with the Atari PC's. If I was to go into the same level of detail with the ABC's ideally I would have to do the same and find this stuff which is pretty rare and most of the time on the other side of the world so expensive to acquire. Also a lot of the detailed information I have on my website came from actual PC's, components, manuals, disks, schematics I own which has taken time and money to aquire.
#System cmos checksum bad Pc#
I may sometime in the future but as it is I don't have much time to devote to the Atari PC series as it is so taking on the ABC series is a low priority. I think this probably will solve your problem.
I advice you to replace a battery from a motherboard with a new one. So would appreciate any help you guys could provide in pointing me in the right direction. It said System CMOS checksum bad - Default configuration used. Is there something else I need to look at on the motherboard which could be causing the fault? I'm afraid while I started on PC's in this era when I was young, all my diagnosing and troubleshooting skills I learnt with later PC's so when it comes to old architecture like this, besides the basics I'm a little lost as to where to look on the board for a fault and a lack of schematics doesn't help. Different external batteries which I know are working from other PC's I have (they use the same battery). The RAM it came with was the original RAM they were sold with.Ģ. Tried different RAM and also in different positions. I tried attaching a floppy drive to the onboard floppy port to see if I could get it to boot off that for further diagnosis but it doesn't even attempt to do so (restarts as I said above).Īccording to the AMI BIOS beep code, 2 beeps is "Memory parity error" which stated on the below website is "A memory parity error has occurred in the first 64K of RAM.
#System cmos checksum bad code#
The beeps are definitely clearly apart so I'm assuming it's just the "2 beep" error code but even if it was 3 beeps the errors are closely related. Interestingly after a second or so it beeps just the one time which to me sounds like the familiar "POST OK" beep but then resets and starts all over again. I thought I would explain this all first since you don't see these motherboards around much so I'm guessing not many would be familiar with it.Īnyway getting to the problem at hand, the board will display and count up the memory correctly with no errors but then it beeps twice and displays the following message: In case it's relevant it has onboard EGA/VGA via a Paradise PVGA. To give you some details on the board it has an AMD 286-16 CPU, C&T Chipset, AMI BIOS and it uses SIPP RAM for all it's memory capacity (there's no mixture of SIPP and socketed chips like I've seen on some older 286 boards). I recently picked up an Atari PC4 Motherboard (286) which has an issue with booting properly.
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