SHORT PAK AST Part Number 202085-001
The ShortPak is a memory expansion adapter for the IBM PC, PC/XT, and 100%
compatibles running at 4.77 MHz. The ShortPak can be configured with from 64K
to 576K of memory using industry standard 64K and 256K DRAMS with a minimum
speed of 150NS. This board will bring a PC up to it's DOS limit of 640K. It
does NOT support memory above 640K, such as extended memory or expanded memory
(EMS).
SWITCH SETTINGS
STARTING ADDRESS (MEMORY IN SYSTEM BEFORE SHORTPAK INSTALLED)
S1 S2 S3
---- ---- ----
64K OFF OFF OFF
128K OFF OFF ON
192K OFF ON OFF
256K* OFF ON ON
320K ON OFF OFF
384K ON OFF ON
448K ON ON OFF
512K ON ON ON
* = Factory Default
MEMORY INSTALLED ON SHORTPAK
S4 S5 S6 BANK 0 BANK 1 BANK 2
--- --- --- ------ ------ ------
0K OFF OFF OFF - - -
64K OFF OFF ON 64K - -
128K OFF ON OFF 64K 64K -
256K OFF ON ON 256K - -
320K ON OFF OFF 64K 256K -
384K* ON OFF ON 64K 64K 256K
512K ON ON OFF 256K 256K -
576K ON ON ON 64K 256K 256K
S7 - NOT APPLICABLE
S8 - PARITY ENABLE (recommend "ON" at all times)
SWITCH LOCATIONS
+---------------------------------+
| | +---
| +-+
| | |
| +-------+ | |
| | SW1 | | |
| +-------+ | |
| | |
| | |
| | |
| +-+
+---------------+ +----+ |
+------------+ |
|