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Author Topic: PAL on A2000  (Read 2277 times)

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Offline amiman99

Re: PAL on A2000
« on: February 23, 2016, 08:12:23 PM »
According to schematics there is a solder blob J102 connected to Agnus chip PIN41 TEST.
Normally the pin is connected to GND, but when you break it, the pin goes to 5V (through resistor).
I'm pretty sure I made that mod before and it worked.

I love schematics!
Logged
A500 KS 2.1, 1MB Chip, 68000
A600 KS 3.1, 2MB Chip, ACA630 32MB RAM
A1000 KS 1.3, 8MB RAM
A1200 KS 3.1, Blizzard IV 50MHz 64MB RAM
A2000 KS 2.1, 68030 25MHz, 6MB RAM
A3000 KS 3.1, 68030 25MHz, 16MB RAM
A4000 KS 3.0, 68040 25MHz, 16MB RAM
CDTV KS 3.1, 4MB RAM
CD32
(AROS BOX) Dead :(
 

Offline amiman99

Re: PAL on A2000
« Reply #1 on: February 23, 2016, 09:45:51 PM »
I'm going to say that Motherboards v4.3 and up should have the 102 jumper and the FAT AGNUS that supports 1MB Chip RAM.
The jumper is next to the Agnus chip and probably needs to be cut.
Logged
A500 KS 2.1, 1MB Chip, 68000
A600 KS 3.1, 2MB Chip, ACA630 32MB RAM
A1000 KS 1.3, 8MB RAM
A1200 KS 3.1, Blizzard IV 50MHz 64MB RAM
A2000 KS 2.1, 68030 25MHz, 6MB RAM
A3000 KS 3.1, 68030 25MHz, 16MB RAM
A4000 KS 3.0, 68040 25MHz, 16MB RAM
CDTV KS 3.1, 4MB RAM
CD32
(AROS BOX) Dead :(
 

Offline amiman99

Re: PAL on A2000
« Reply #2 on: February 23, 2016, 10:57:50 PM »
I looked at the BBoA website picture of v4.3 motherboard and the FAT LADY is written on it and has a J102 jumper next to it, so it looks like v4.3 MBs had the FAT AGNUS installed.
I would say that if you are into hacking, go ahead and install the switch.

http://www.bboah.com/download_photos/a2000rev43mb.jpg
Logged
A500 KS 2.1, 1MB Chip, 68000
A600 KS 3.1, 2MB Chip, ACA630 32MB RAM
A1000 KS 1.3, 8MB RAM
A1200 KS 3.1, Blizzard IV 50MHz 64MB RAM
A2000 KS 2.1, 68030 25MHz, 6MB RAM
A3000 KS 3.1, 68030 25MHz, 16MB RAM
A4000 KS 3.0, 68040 25MHz, 16MB RAM
CDTV KS 3.1, 4MB RAM
CD32
(AROS BOX) Dead :(
 

Offline amiman99

Re: PAL on A2000
« Reply #3 on: February 24, 2016, 08:46:16 PM »
Quote from: psxphill;804582
Fat agnus just means it's not the A1000 agnus, which was also used in the german A2000. It only refers to the packaging size and the only functionality change was support for ranger memory @ c00000. Later changes like 1mb or 2mb chip ram and switchable 50/60fps can only be determined by the part number, they were all fat agnus.
My bad, still pin 41 is the pin to switch PAL/NTSC or at least 50/60Hz. It worked I did it.
The only Amiga I could not switch to PAL is the A1000 no matter what I did.
Logged
A500 KS 2.1, 1MB Chip, 68000
A600 KS 3.1, 2MB Chip, ACA630 32MB RAM
A1000 KS 1.3, 8MB RAM
A1200 KS 3.1, Blizzard IV 50MHz 64MB RAM
A2000 KS 2.1, 68030 25MHz, 6MB RAM
A3000 KS 3.1, 68030 25MHz, 16MB RAM
A4000 KS 3.0, 68040 25MHz, 16MB RAM
CDTV KS 3.1, 4MB RAM
CD32
(AROS BOX) Dead :(
 
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