TANDON CORPORATION MODEL 189230 Processor 80286 Processor Speed 6/8/10MHz Chip Set Unidentified Maximum Onboard Memory 3MB (2MB on external memory card) Cache None BIOS Unidentified Dimensions 355mm x 305mm I/O Options None NPU Options 80287 [Image] USER CONFIGURABLE SETTINGS Setting Label Position » Factory configured - do not alter SW1/1 N/A » Factory configured - do not alter SW1/2 N/A » Video type select 80 characters SW1/3 Off » Factory configured - do not alter SW1/4 Off » Factory configured - do not alter SW1/5 N/A » Factory configured - do not alter SW1/6 N/A » Factory configured - do not alter SW1/7 N/A DRAM Note: The orientation and chip sizes are unidentified. DRAM SWITCH Expansion size Total size SW1/8 128KB 640KB Off 512KB 1MB On [Image] DRAM Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (18) 41256 None None None 1MB (18) 41256 (18) 41256 None None 1.5MB (18) 41256 (18) 41256 (18) 41256 None 2MB (18) 41256 (18) 41256 (18) 41256 (18) 41256 DRAM SWITCH (CON’T) Memory before Memory after SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 512-640KB 2560-2688KB Off Off Off On Off 1024KB 3072KB Off Off Off On On 2560-2688KB 4608-4736KB Off Off On On Off 3072KB 5120KB Off Off On On On 4608-4736KB 6656-6784KB Off On Off On Off 5120KB 7168KB Off On Off On On 656-6784KB 8704-8832KB Off On On On Off 7168KB 9216KB Off On On On On 8704-8832KB 10752-10880KB On Off Off On Off 9216KB 11264KB On Off Off On On 10752-10880KB 12800-12928KB On Off On On Off 11264KB 13312KB On Off On On On 12800-12928KB 14848-14976KB On On Off On Off 13312KB 15360KB On On Off On On 14848-14976KB 15744KB On On On On Off 15360KB 15744KB On On On On On MISCELLANEOUS TECHNICAL NOTE The location of pin 1 is unidentified.