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Author Topic: My A500 "project" pics, details, build log?  (Read 112907 times)

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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #59 on: August 18, 2012, 01:28:44 AM »
$25... $0... $25... $0...

plus, the height of the two rom chips stacked nicely supports the accelerator board.
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #60 on: August 18, 2012, 02:07:42 AM »
it appears that 68000 fall back mode doesn't work with the KS 3.1 rom, but does with the KS 1.3?
I guess the MMR was designed before KS 3.1 now wasn't it...

flick two switches, and we're back to this :p

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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #61 on: August 18, 2012, 02:18:10 AM »
that'd be NTSC.
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #62 on: August 18, 2012, 02:55:13 AM »
Quote from: djos;704069
mine's faster than yours (in stock mode): :D

;)

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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #63 on: August 18, 2012, 04:01:19 AM »
I turned the volume up ;)
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #64 on: August 18, 2012, 04:41:14 AM »
pal mode? the who did what now?

crystal is 28.37516

JP4 I may have cut? too lazy to go look...
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #65 on: August 18, 2012, 08:44:07 AM »
I can only assume mine defaults to PAL? but haven't checked, been working on my car...

works ok with the GBS though?

also, the fact yours lists the "Vert HZ" and "Supply Hz" as 60Hz, instead of 50Hz probably has something to do with it...

I'm sure someone else can fill us in?
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #66 on: August 18, 2012, 08:52:12 AM »
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #67 on: August 18, 2012, 09:02:06 AM »
went and checked,
mine does default to PAL, if I select NTSC the GBS crashes.... auto adjust might fix it, but not going to try as I'll loose my settings :p
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #68 on: August 18, 2012, 09:07:58 AM »
...isn't 8372A the standard PAL A500 chip? :P
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #69 on: August 18, 2012, 09:11:29 AM »
but haven't you changed it to a 8372AB?
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #70 on: August 18, 2012, 09:42:45 AM »
oh...

then why is yours NTSC?!? :P
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #71 on: August 18, 2012, 09:48:35 AM »
btw, the difference between my two "stock" benchmark tests, was one had the TomThul 8meg added, the other did not.

also, the KS1.3 resulted in slightly higher scores than the 3.1 ;)

running the test with KS3.1 resulted in it scoring about 3 points less than yours :p
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #72 on: August 19, 2012, 08:44:11 AM »
Booting a 1.3 floppy in 68000 mode with ks1.3 it crashed with a yellow screen? While booting. It seems the mmr is badly unstable in 68000 mode with the a590 scsi controller connected.
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #73 on: August 19, 2012, 09:34:49 AM »
Quote from: djos;704262

So then I tried using H/V-Sync + RGB direct from my Miggy to the GBS but couldnt get this to work at all for some reason???

I do believe one of the sync signals is reverse polarity, positive instead of negative, or negative instead of positive.

I forget which one, but that's why it doesn't work ;)
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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #74 from previous page: August 23, 2012, 10:06:54 AM »
I found a 36Mhz crystal in a box? *shrugs*
Then I found a 46Mhz crystal on a sound card? that didn't work :p



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