User Tools

Site Tools


x68000:xsimm10_-_memory_expansion_board

This is an old revision of the document!


All information on this page was taken from: http://www.geocities.co.jp/SiliconValley-SanJose/6808/

XSIMM10 memory expansion board

XSIMM10 (Ten X-Sim) was manufactured and sold from 1994 by Systems Research Ltd., Tokyo. It is a memory expansion board for the X68000 series. This product uses commercially available SIMM modules (not included) mounted on board, and is compatible with X68000 I/O expansion slots.

XSIMM10

Compatible SIMM modules

The XSIMM10 board can be used with the following commercially available SIMM modules:

  • PC/AT: 9-bit (with parity) 30-pin
  • Macintosh: 8-bit, 30-pin

However, due to the vertical size limitations of I/O expansion slots, there are following SIMM module vertical size restrictions:

  • When mounted in slot 1: Less than 15.3mm
  • When mounted in slot 2: Less than 20.4mm

If the size is exceeded, the adjacent slot is unusable.

In addition, when used with the following models, you must have a 1MB of internal memory expansion board in advance and a total of 2MB internal memory to add more RAM.

XSIMM10 SIMM modules must have the same access time and memory capacity as a pair or two pairs. The RAM can be expanded up to 10MB maximum.

SIMM modules with 4MB or 1MB capacity can be used as a pair. However, to implement two pairs, do not use 4MB SIMM modules.

  • A Pair (Aペア): Each SIMM module can be 4MB or 1MB (You must specify the capacity of installed SIMM modules).
  • B Pair (Bペア): Each SIMM module can be only 1MB

DIP switch settings

S1 and S2 DIP switch settings as pictured above.

  • 0 = ON
  • 1 = OFF

(OFF = 1 is displayed on the board) DIP switch settings as shown below.

DIP switch settings, etc., was taken from the instruction manual XSIMM10 Systems Research Inc., Tokyo.

* The product's manufacturer, Research Systems, Ltd., Tokyo is.

x68000/xsimm10_-_memory_expansion_board.1326324111.txt.gz · Last modified: 2019/08/27 20:44 (external edit)