A1200 rev 2B timing fixes
 

I have an Escom 2B Amiga (new old stock from Amigakit.com), and I haven't done the timing fix on it, yet my Apollo 040 seems to work just fine.
Should I still do the timing fix? I know the saying "Don't fix what's not broken", but the problem is that I don't know if I am seeing a timing error or not :( How can I notice it? Well actually, my 040 keep resetting itself but I guess that's because of it overheating, not sure.

Any information on this subject is greatly appreciated, I want to "know it all" about the 2B (and 1D.4) timing fixes, and why they are needed. Maybe I'm getting a 060 in the future as well, so I might do the mod...

:guru

A1200 Motherboard fixes :)

Should I do the other fixes on the page too? The 2B jump wires and stuff.. Mine doesn't have 'em.

Only if your board is giving problems.

Stedy's Rev 2B board does not have the first three modifications mentioned, and it works OK.

Okie :)
Guess I'll stick to not touching the motherboard then, as it's in pristine condition... My 040 works with it anyways, although it does reset itself sometimes.

The machine can reset by itself when the 040 gets too hot: replace or enhance the heat dissipation on the 040 CPU and all will be fine.

BTW: as far as I know, Amigakit normally do the timing fixes on their NOS Amigas before selling.

It would be nice to think they did. :)

Before Amigakit got their hands on the NOS A1200 stock, it was owned by Eyetech.

I bought an AT/Escom A1200 fitted with a Rev 2B motherboard in 2000, but it didn't have the timing fixes done. :sad

Some time later, I bought a set of Workbench 2.1 floppies from them. Enclosed were details of their A1200 revision 1-D-4 and 2B modification service, designed to bring these motherboards up to revision 1-D-1 (the most stable) specification. :p

The same machine demonstrated another example of Eyetech's "marketing strategy". It came fitted with a 4-way buffered IDE interface, the usual 2½-inch internal IDE hard drive and an external IDE CD-ROM port mounted behind the PCMCIA slot.

To make use of this feature, however, required the IDEFix'97 software - which, intentionally, was not included. :p

I was not surprised when I heard that Eyetech had gone into liquidation. ;)

:D :great


:nervous:(


:crying:scream