atari email archive

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

User Signature Fuses

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" To select the ABEL device file for the GAL follow these rules
" 1. Registers are required.
"	Use the P16V8R.
" 2. No registers, but feedback from 8 I/O pins is required.
"	Use the P16V8R.
" 3. No registers, but feedback from 6 I/O pins is required.
"	Use the P16V8C.
" 4. No registers or feedback, but 8 terms per output are required.
"	Use the P16V8S.


The 16V8 has 64 bits available for user data, starting at fuse 2056.
Unfortunately the Data I/O does not have a decent way of reading it.


fuses  "User Signature Word
	[2056..2087] = '052-';
	[2088..2119] = '1139';


The 20V8 has 64 bits available for user data, starting at fuse 2568.

fuses  "User Signature Word
	[2568..2599] = '052-';
	[2600..2631] = '1140';


I use the User Signature Word for the programmed part number.
(052-1140 is 136052-1140.)


   Jed
Message 1 of 1

Feb 07, 1990