My A500 "project" pics, details, build log?

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5

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yes

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You might have also blown the MPU on each keyboard, that is the CPU controller that A500's have on the small circuit board. Bummer if you have! Not easy to find replacements or to replace.

Az

I plugged the first poop keyboard (From a REV5 mobo) into my good A500, and its poop... half the keys don't work...

However, I plugged the second "poop" keyboard (REV6a) in, and it works perfectly fine...

So, it appears there is something else odd going on with this REV5 motherboard that doesn't like having a keyboard plugged in.

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Voltages seem to be fine, but would an unstable power supply cause the keyboard chip to crash?

I was testing this A500 with an untested power supply, but the voltages seem to measure fine too.

Also, if I plug the keyboard in with the A500 booted up, the machine resets... is this normal? Although its probably a bad idea :p

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That'll do

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I don't know.... I hope so... the VGA connection doesn't do anything with the Amiga connected... :/

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Nano SwanSID for the C64 arrived yesterday too... first impressions aren't great... but I'll need to listen to it through something other than TV speakers.

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Ok, it does the Amiga 15Khz quite nicely... fantastic! also has S-Video for the C64 and Mega Drive... yay!

And VGA so I can connect it to my PC as a small second monitor (its 15inch) plus composite video for the N64....





But....

There's an issue....

Using the Svideo for the C64, and scart for the A500, the whole imagine is shifted up, and the top 1/4 of the screen gets cut off?

The monitor has no menu adjustments for this...

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turned the monitor off and on again, image came good, but its shaking? :/

edit: there's an option called "VCR" turn it on, image fills the screen, but shakes.... turn it off, clear imagine, cut off at the top.

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In PAL: High Res Laced mode, the workbench image is correctly positioned, and fills the screen nicely.

But games obviously don't run in this mode.

However, if I start up in NTSC mode, while still running the PAL workbench res, some games are correctly positioned... ZOOL for example is good... but, other games now have the bottom of the screen cut off... Flimbos Quest being one... :/

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This monitor does the same image shift with the Sega Megadrive, connected either via composite, or svideo.

HOWEVER! much like the Amiga output being correctly centered when set to "interlaced" the sega output, when playing sonic in 2 player, is also correct...

The Sega changes resolution in 2 player mode...

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My brother and I had a "retro games" evening, while he was in Adelaide.

some games really suck! :p

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*fingers crossed*

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I tried a 40Mhz crystal in the Mega Midget Racer today (in place of the 36Mhz)

It causes a software crash, which I thought was a bit strange, so I put an 8Mhz instead, just to see what happened, well, sysinfo reported it as being 7.09Mhz, but it benchmarked 1451 dhrystones, while a stock 68000 does about 580.

Reason for the A600, internal ide controller, composite video out with the possibility to modify it to give s-video out, up to 2 meg chip ram, 35cm wide, whereas the A500 with A590 plugged in is 60cm wide!

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Unfortunately, I ended up with two sets of front rotors, one for the turbo version, one for non turbo..