EVEREX SYSTEMS, INC. RAM 3000 AT EV-135 (VER.2.0) Card Type Memory card Chip Set Unidentified Maximum Onboard Memory 3MB RAM (Type unidentified) I/O Options None Data Bus 16-bit ISA [Image] DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 256KB (8) 256K x None None None 1 512KB (8) 256K x (8) 256K x None None 1 1 768KB (8) 256K x (8) 256K x (8) 256K x None 1 1 1 1024KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 1280KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 1536KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 1792KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 2048KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 2304KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 2560KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 2816KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 3072KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 DRAM CONFIGURATION Size Bank 4 Bank 5 Bank 6 Bank 7 256KB None None None None 512KB None None None None 768KB None None None None 1024KB None None None None 1280KB (8) 256K x None None None 1 1536KB (8) 256K x (8) 256K x None None 1 1 1792KB (8) 256K x (8) 256K x (8) 256K x None 1 1 1 2048KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 2304KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 2560KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 2816KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 3072KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 DRAM CONFIGURATION Size Bank 8 Bank 9 Bank 10 Bank 11 256KB None None None None 512KB None None None None 768KB None None None None 1024KB None None None None 1280KB None None None None 1536KB None None None None 1792KB None None None None 2048KB None None None None 2304KB (8) 256K x None None None 1 2560KB (8) 256K x (8) 256K x None None 1 1 2816KB (8) 256K x (8) 256K x (8) 256K x None 1 1 1 3072KB (8) 256K x (8) 256K x (8) 256K x (8) 256K x 1 1 1 1 DRAM SWITCH CONFIGURATION Size SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 SW1/7 SW1/8 0KB On On On Off On On On On 128KB Off On On Off On On On On 256KB On Off On Off On On On On 384KB Off Off On Off On On On On 512KB On On Off Off On On On On 640KB Off On Off Off On On On On 768KB On Off Off Off On On On On 896KB Off Off Off Off On On On On 1024KB On On On On Off On On On 1152KB Off On On On Off On On On 1280KB On Off On On Off On On On 1408KB Off Off On On Off On On On 1536KB On On Off On Off On On On 1664KB Off On Off On Off On On On 1792KB On Off Off On Off On On On 1920KB Off Off Off On Off On On On 2048KB On On On Off Off On On On 2176KB Off On On Off Off On On On 2304KB On Off On Off Off On On On 2432KB Off Off On Off Off On On On 2560KB On On Off Off Off On On On 2688KB Off On Off Off Off On On On 2816KB On Off Off Off Off On On On 2944KB Off Off Off Off Off On On On 3072KB On On On On On Off On On BASE MEMORY JUMPER CONFIGURATION Size JP2 JP3 None Pins 3 & 4, 5 & 6 Pins 3 & 4 closed closed 256KB - 512KB Pins 3 & 4, 7 & 8 Pins 3 & 4 closed closed 256KB - 640KB Pins 1 & 2, 5 & 6 Pins 1 & 2 closed closed 512KB - 640KB Pins 1 & 2, 5 & 6 Pins 1 & 2 closed closed BASE MEMORY SWITCH CONFIGURATION Size Chips SW2/6 SW2/7 SW2/8 None N/A Off Off Off 256KB - 64KB Off On On 512KB 256KB - 256KB N/A N/A N/A 512KB 256KB - 64KB On On On 640KB 256KB - 256KB On On Off 640KB 512KB - 64KB On Off On 640KB 512KB - 256KB On Off Off 640KB EXTENDED MEMORY ADDRESS SETTINGS Address Chips SW2/1 SW2/2 SW2/3 SW2/4 SW2/5 128KB 64 Off On On On On 256KB 64 On Off On On On 384KB 64 Off Off On On On 512KB 64 On On Off On On 512KB 256 On On Off On On 640KB 64 Off On Off On On 768KB 64 On Off Off On On 1MB 256 On On On Off On 1.5MB 256 On On Off Off On 2MB 256 On On On On Off 2.5MB 256 On On Off On Off 3MB 256 On On On Off Off MISCELLANEOUS TECHNICAL NOTES Note: The purpose of W16 is unidentified.