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Author Topic: 1.D.4 A1200 Timing Fault  (Read 2117 times)

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Offline scafeTopic starter

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1.D.4 A1200 Timing Fault
« on: June 20, 2003, 12:30:40 PM »
I know that pre-1995 commodore manufactured A1200's suffer from a number of manufacturing faults in the form of a timing fault and some sort of CC-RESET fault on the GAYLE custom chip. However my board is not usual, having experienced no problems with my A1200 i was unbeknownst to this fault, but when checking the info printed on the board i was shocked to find i owned a Commodore manufactured 1.D.4 revision board which is the revision known to have this fault. However my board is dated 1996 not 1992 as pictures on the net would suggest, and has the layout of the later Amiga International maufactured boards. To add firther confusion to the matter my board is fitted with 3.0 roms rather than 3.1's and is accompanyed by a number of patch wires which appear to have been soldered at the factory to my rom chips? Why has this been done as out of all the images of A1200 board's i have seen none have this on the rom chips :-? I did buy this A1200 new around mid 1996, could this be an old Commodore mainboard repaired by Amiga International during the takeover?
Athilon XP2200 with Mandrake 9.1 and A1200 cut un shut into a Tulip 486 desktop case :-o
 

Offline scafeTopic starter

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Re: 1.D.4 A1200 Timing Fault
« Reply #1 on: June 23, 2003, 12:29:13 PM »
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StevenJGore wrote:
Presumably my AT A1200 doesn't have them?

Steve.

 Thats right the Amiga Technoligys version removed these faults however with the inclusion of new EU laws the RF module on the board was replaced causing incompatibilitys with some Televisions as far as i know this is only the case with the later boards and only affects older TV's connected via the RF port
Athilon XP2200 with Mandrake 9.1 and A1200 cut un shut into a Tulip 486 desktop case :-o
 

Offline scafeTopic starter

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Re: 1.D.4 A1200 Timing Fault
« Reply #2 on: June 23, 2003, 07:32:37 PM »
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amigamad wrote:
2 of my a1200,s are  1.D.4 versions i have never had a problem with them even with my ppc card and graphics card,s clockport serial adaptor and ide interfaces .I think the amiga Technoligys a1200 i have is a revision 2b .

great!! thats ace because i've just ordered one of those EZIDE 4 way interfaces from eyetech and i was worried it would refuse to work with my A1200 mboard, and i can gather from yours that its safe to order and add the accelerator, scandoubler, and EZKBD interface that i plan to add as soon as i get some money flowing.  :-D
Athilon XP2200 with Mandrake 9.1 and A1200 cut un shut into a Tulip 486 desktop case :-o