ATARI 800XL 256kB XE compatible SMD1206 version

author: archeocomp
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2 layer board of 1.08 x 1.23 inches (27.4 x 31.2 mm)
Uploaded: July 27, 2020
Shared: March 16, 2021
Total Price: $6.60

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

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