atari email archive

a collection of messages sent at Atari from 1983 to 1992.

dsiii rev1 mods

(1 / 4)


Have you given me a mod list to upgrade DSIII Rev1 pcb's to Rev2? If you did
then I must have the mod list around here somewhere. If not then can you 
vaxmail me the mod.

Thanks,
Glenn

DS III Rev 1 Mods

(2 / 4)


I have changed the operation of the GAL on the DS III Board at location 1A/B.

This GAL is used in selecting the Graphics ROMs; these ROMs can be either
27C512s or 27C010s depending on whether there is a pin header in G0.

	Old was: No Header = 27C512, Header = 27C010

I have changed it to:

	No Header = 27C010, Header = 27C512

On DS III boards starting with Rev 2, the 68010 can read the state of
Pin Header G0. Self-Test starting with Version 2.4 uses this so it can 
correctly compute checksums.

I would like to have all DS III Boards to have the new GAL. It is a 16V8-25
and the file is [Margolin.GALs.Release]DS3_ROM.JED. The old part has a checksum
of 4177; the new part has a checksum of 4178.

At the same time, the games should get the latest Self-Test which is
[Margolin.Aces]STAL2_4.VLDA [Note that Self-Test is not yet finished.]


(When I release the GALs I will ask to have the files moved to 
[Logg.Ace.Release.ROMREVA].)


DS III Rev 1 boards can be modified to have this feature:

	1. On bottom of board, Cut the trace going to 6P pin 19;
	2. Connect a wire jumper from 6P pin 19 to 5J pin 1; 
	3. Connect a wire jumper from 6P pin 11 to pin header G0; 
	4. Connect a wire jumper from 6P pin 9 to 5D pin 6.
 

Jed

ds3 rev1 mods

(3 / 4)


I won't be able to mod your board until tomorrow because I have to leave now to 
get the keys to the new house. Talk to you tomorrow.

Glenn

mods to your ds3 board

(4 / 4)


	I still haven't had time to mod your DSIII board yet, but tomorrow I 
should have the time after getting back from bringing Talons to Regency.

	Also, Rick Owens had me verify the gals you released for the DSPCOM & 
the DSIII and there were no problems, they all work fine.

	And, we did another ESD test and got power-up resets when the coin door
was zapped with 15KV. Meyette found that installing a ground from the coin door 
frame to the power supply base corrects the problem.

Glenn
Message 1 of 4

Jun 26, 1991