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Morrow - 24K RAM
This board was produced when Morrow was still known as Tinker Toys.

Morrow 24K RAM Board

The Thinker Toys 24K Memory Master was their second entry into the field of bank select S-100 memory products. Using the popular 5257 4K x 1 static RAM memory chip with an access time which allowed them to guarantee operation with 4MHz Z-80 systems and 5MHz 8085 systems, the 24K Memory Master was compatible with most popular S-100 bank select software. This versatile board could be switched to become selected or deselected in response to any bit of any I/O port; to come up active or inactive on power-up; and to honor or ignore the PHANTOM bus signal. Once selected, the unit could be configured as three independently addressable and write protectable 8K blocks, with addressing allowed at the beginning of any 8K boundary.  
The manual for this board can be obtained here
Morrow S-100 Boards
24K RAM   64K RAM    Disk Jockey FDC     Multi I/O    SuperRAM     SwitchBoard    Z80 Board    Hard Disk Controller
DJ-DMA FDC  8K DRAM    HDC-DMA Controller


This page was last modified on 05/04/2016