This document is for the full-sized (13.8" x 12.025") 80386-16 motherboard. It's identifying features are: an LED between expansion slots #5 and #6; a proprietary memory card slot #7; a bank of eight switches between slot #1 and the keyboard connector; four ROM sockets; 8-bit slots for #2 and #6; 16-bit slots for #1, #3, #4, #5, and #8; and a socket for an 80287 math coprocessor next to the CPU. The bus speed for this motherboard is fixed at 8MHz. +=============================+ + + + MOTHERBOARD SWITCH SETTINGS + + + + * = Default setting + +=============================+ 1 Reserved *On 2 80287 Coprocessor installed On 80287 Coprocessor not installed *Off 80387 Coprocessor installed On 3 4 Mhz 80287 Coprocessor installed On 8 Mhz 80287 Coprocessor installed *Off 10 Mhz 80287 Coprocessor installed Off 4 Bios relocation enabled *On Bios relocation disabled Off 5 Reserved *Off 6 Color video adapter *On Monochrome video adapter Off 7 See below --- 8 Reserved *Off If the M100C, or M400C memory card is installed, then switch 7 is defined as follows: 7 Cache enabled *On Cache disabled Off If the M100, M200, or M300 memory card is installed, then switch 7 is defined as follows: 7 Reserved *Off +=============================+ + + + MOTHERBOARD JUMPER SETTINGS + + + +=============================+ J1 External 6-volt battery connector Pin 1 - Battery Positive Pin 2 - no connector Pin 3 - Ground Pin 4 - Ground J21 Keylock / Power LED Pin 1 - Power LED signal Pin 2 - no connector Pin 3 - Ground Pin 4 - Keyboard lock signal Pin 5 - Ground J22 External speaker Pin 1 - Speaker Pin 2 - no connector Pin 3 - Ground Pin 4 - +5 volts W1 Reset switch Pin 1 - Signal Pin 2 - Ground W4 ROM size Pin 1-2 128KB Pin 2-3 256KB W5 Reserved - always installed W6 Memory card type Pin 1-2 Static column memory card Pin 2-3 Cache memory card +==============+ + + + MEMORY CARDS + + + +==============+ M100 memory card: ================= The M100 memory card can hold 1MB or 2MB. The first MB is usually soldered on the board. This is the card that was most commonly used by CompuAdd. NOTE: All of the memory on the M100 must be static column DRAM (as opposed to page mode DRAM) in order for the 2M-08, or 4M-08 to operate. There is a row of nine (9) jumper pins in the lower left corner of the M100 memory card. They should be positioned as follows: 1MB Pin 2-3, Pin 4-5, Pin 7-8 2MB Pin 1-2, Pin 4-5, Pin 7-8 4MB Pin 1-2, Pin 4-5, Pin 7-8 (with 2M-08) 6MB Pin 1-2, Pin 4-5, Pin 7-8 (with 4M-08) 10MB Pin 1-2, Pin 4-5, Pin 7-8 (with 4M-08) Recommended memory chips for the second MB ------------------------------------------ Hitachi HM51258P-8 256Kx1 static column DRAM Hitachi HM51258P-10 256Kx1 static column DRAM Hitachi HM51258P-12 256Kx1 static column DRAM NMB AAA2800P-07 256Kx1 static column DRAM NMB AAA2800P-08 256Kx1 static column DRAM NMB AAA2800P-10 256Kx1 static column DRAM Panasonic MN41256A-08 256Kx1 page mode DRAM (see note above) Hyundai HY53C256LS-80 256Kx1 page mode DRAM (see note above) NMB AAA2801P-08 256Kx1 page mode DRAM (see note above) NMB AAA2801P-10 256Kx1 page mode DRAM (see note above) M200 memory card: ================= The M200 memory card can hold 4MB or 8MB using 1Mx1 DRAM. The top two rows of chips make up bank 0, and the bottow two rows make up bank 1. There is a set of five (5) two-pin jumpers in the lower left corner of the M200 memory card. They should be set as follows: W1 W2 W3 W4 W5 4MB ON ON OFF OFF OFF 8MB OFF ON OFF OFF OFF 12MB OFF OFF OFF OFF OFF (with 4M-08) 16MB OFF OFF OFF OFF OFF (with 4M-08) Recommended memory chips ------------------------ Toshiba TC511000P-85 1Mx1 page mode DRAM Toshiba TC511000P-10 1Mx1 page mode DRAM Samsung KM41C1000P-10 1Mx1 page mode DRAM Samsung KM41C1000P-80 1Mx1 page mode DRAM Mitsubishi M5M4100AP 1Mx1 page mode DRAM Motorola MCM511000P-10 1Mx1 page mode DRAM Motorola MCM511000P-85 1Mx1 page mode DRAM Siemens HYB511000-85 1Mx1 page mode DRAM Siemens HYB511000-70 1Mx1 page mode DRAM Intel P21010-08 1Mx1 page mode DRAM Intel P21010-10 1Mx1 page mode DRAM M300 memory card: ================= The M300 memory card can hold 1MB, 2MB, or 6MB. Each of the first two MB is made up of four (4) 256Kx1, and eight (8) 256Kx4 chips. The lower four rows of chips hold 1Mx1 chips, and must be filled in completely. It is not possible to partially fill the lower bank of memory. There is a bank of eight (8) switches in the upper left corner of the M300 memory card. They should be set as follows: SW1.1 SW1.2 SW1.3 SW1.4 SW1.5 SW1.6 SW1.7 SW1.8 1MB OFF OFF OFF OFF ON ON OFF ON 2MB OFF OFF ON OFF ON ON OFF ON 6MB OFF ON ON OFF ON ON OFF ON 10MB ON ON ON OFF ON ON OFF ON (with 4M-08) 14MB ON ON ON OFF ON ON OFF ON (with 4M-08) Recommended memory chips ------------------------ Hyundai HY53C256LS-10 256Kx1 page mode DRAM Hyundai HY53C256LS-80 256Kx1 page mode DRAM NMB AAA2801P-07 256Kx1 page mode DRAM NMB AAA2801P-08 256Kx1 page mode DRAM OKI M514256-10 256Kx4 page mode DRAM Fujitsu MB81C4256-10P 256Kx4 page mode DRAM Siemens HYB514256A-80 256Kx4 page mode DRAM Samsung KM44C256AP-80 256Kx4 page mode DRAM Toshiba TC511000P-10 1Mx1 page mode DRAM Toshiba TC511000P-85 1Mx1 page mode DRAM NEC D421000C-80 1Mx1 page mode DRAM Motorola MCM511000P-10 1Mx1 page mode DRAM Motorola MCM511000P-85 1Mx1 page mode DRAM Samsung KM41C1000P-10 1Mx1 page mode DRAM Siemens HYB511000-85 1Mx1 page mode DRAM Siemens HYB511000-70 1Mx1 page mode DRAM Mitsubishi M5M4100AP 1Mx1 page mode DRAM M100C memory card: ================== The M100C memory card can hold 1MB or 2MB. It has an Austek cache controller in the lower left corner of the card. It accommodates either the 2M-08, or the 4M-08. NOTE: Static column DRAM (as opposed to page mode DRAM) is recommended when using either the 2M-08, or the 4M-08. There are two jumpers on the M100C memory card. W1 is in the upper left corner, and W3 is in the lower left corner. They should be set as follows: W1 W3 1MB Pin 1-2 ON 2MB Pin 2-3 ON 4MB Pin 2-3 ON (with 2M-08) 6MB Pin 2-3 ON (with 4M-08) 10MB Pin 2-3 ON (with 4M-08) Recommended memory chips ------------------------ Hitachi HM51258P-8 256Kx1 static column DRAM NMB AAA2800P-07 256Kx1 static column DRAM NMB AAA2800P-08 256Kx1 static column DRAM Panasonic MN41256A-08 256Kx1 page mode DRAM (see note above) Sharp LH21256-08 256Kx1 page mode DRAM (see note above) NMB AAA2801P-06 256Kx1 page mode DRAM (see note above) NMB AAA2801P-08 256Kx1 page mode DRAM (see note above) M400C memory card: ================== The M400C memory card can hold 4MB or 8MB. It has an Austek cache controller in the lower left corner. The M400C cannot accommodate either of the memory expansion cards, as it has no connectors. There are two jumpers on the M400C memory card. W1 is in the upper left corner, and W3 is in the lower left corner. They should be set as follows: W1 W3 4MB Pin 1-2 ON 8MB Pin 2-3 ON Recommended memory chips ------------------------ NEC D421000C-80 1Mx1 page mode DRAM Motorola MCM511000P-85 1Mx1 page mode DRAM Siemens HYB511000-70 1Mx1 page mode DRAM Siemens HYB511000-85 1Mx1 page mode DRAM Intel P21010-08 1Mx1 page mode DRAM Samsung KM41C1000P-80 1Mx1 page mode DRAM 2M-08 memory expansion board: ============================= The 2M-08 provides an additional 2MB, and is compatible with the M100, and M100C memory cards. It is not compatible with the M200, the M300, or the M400C. The 2M-08 comes populated, and has no jumpers or switches to set. 4M-08 memory expansion board: ============================= The 4M-08 provides an additional 4MB (expandable to 8MB) for the M100, M200, M300, and M100C memory cards. It is not compatible with the M400C. There is a bank of four (4) switches on the card. The settings differ for each of the main memory boards. Recommended memory chips ------------------------ Use the tables above for the 1Mx1 page mode DRAM used for the appropriate main memory card. With the M100: -------------- S1 S2 S3 S4 6MB ON OFF OFF OFF 10MB ON OFF ON OFF With the M200: -------------- S1 S2 S3 S4 12MB OFF ON OFF OFF 16MB OFF ON ON OFF With the M300: -------------- S1 S2 S3 S4 10MB ON ON OFF OFF 14MB ON ON ON OFF With the M100C: --------------- S1 S2 S3 S4 6MB ON OFF OFF OFF 10MB ON OFF ON OFF