ATARI 800XL 256kB XE compatible
author: archeocomp
2 layer board of 1.19 x 1.30 inches (30.2 x 33.0 mm)
Uploaded:
July 07, 2018
Shared:
January 06, 2019
Total Price:
$7.70
QuarterMEG Atari 800XL, XE compatible, for Ataris with C021697 (or C021698), schematics Claus Buchholz
BOM:
8x 41256 256K DRAMs (200ns or less)
33Ohm resistor
74LS153
74LS139
74LS158 - desoldered chip from Atari 800XL can be reused
Connections: 6 wires as in schematics
RA8 - DRAMs pin 1
PB2 - U23 pin 12
PB3 - U23 pin 13
PB4 - U23 pin 14
PB5 - U23 pin 15
PB6 - U23 pin 16
QuarterMEG Atari 800XL, XE compatible, for Ataris with C021697 (or C021698), schematics Claus Buchholz
BOM:
8x 41256 256K DRAMs (200ns or less)
33Ohm resistor
74LS153
74LS139
74LS158 - desoldered chip from Atari 800XL can be reused
Connections: 6 wires as in schematics
RA8 - DRAMs pin 1
PB2 - U23 pin 12
PB3 - U23 pin 13
PB4 - U23 pin 14
PB5 - U23 pin 15
PB6 - U23 pin 16
