A landmark technical article proposing interim standards for expanding the TS2068 beyond its standard memory limits. Introduces a Bank Switching Controller (BSC) design using a standard PC expansion backplane (EVEREX SYSTEMS EV-168) and an adapter card (VIDJUP Co. design) that can address up to 16 megabytes of memory. Covers the Current Chunk Owner Table (CCOT), auto-configuration theory, ROM switching control with port assignments 132-135, handling of HOME/EXROM/DOCK banks as real external banks, WAIT signal generation, and daisy chain addressing. Includes Figures 1 (BSC) and 2 (Memory Bank) with full circuit specifications.
The TIMEXsinclair 2068: Bank Switching and Memory Expansion
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