TECMAR
MAESTRO
Card Type | Multi-I/O |
Chipset | Unidentified |
Maximum Onboard Memory | 2.5MB DRAM |
I/O Options | Parallel port, serial port |
Data Bus | 8-bit ISA |
CONNECTIONS | |||
Function | Label | Function | Label |
Serial port | CN1 | Parallel port | CN2 |
Note:A DB-25 connector for the serial port attaches to the board via a 26-pin header. The location of this header is unidentified. |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
» | Factory configured - do not alter | JPR | Unidentified |
PARALLEL PORT ADDRESS | ||
Setting | SW1/4 | SW1/5 |
LPT1: | Off | On |
LPT2: | On | Off |
Disabled | On | On |
SERIAL PORT ADDRESS AND INTERRUPT | ||||||
Address | IRQ | JPR6/A | JPR6/B | JPR6/C | SW1/6 | SW1/7 |
3F8h (COM1:) | 4 | Open | Closed | Open | Off | Off |
2F8h (COM2:) | 3 | Closed | Open | Open | On | Off |
3E8h (COM3:) | 4 | Open | Open | Closed | On | On |
2E8h (COM4:) | 3 | Open | Open | Closed | Off | On |
Note:Both the 9-pin and 25-pin connectors access the same serial port. |
SERIAL PORT CONFIGURATION | |
Setting | JPR4 |
DTE | Pins 1 & 2, 3 & 4, 6 & 7, 8 & 9, 11 & 12, 13 & 14 closed |
DCE | Pins 2 & 3, 4 & 5, 7 & 8, 9 & 10, 12 & 13, 14 & 15 closed |
DRAM (256KB ON MAINBOARD) | |||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Bank 4 |
0KB | None | None | None | None | None |
128KB | None | (18) 64K x 1 | None | None | None |
256KB | None | (18) 64K x 1 | (18) 64K x 1 | None | None |
384KB | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | None | None |
512KB | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | None |
640KB | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 |
896KB | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 256K x 1 | None |
1408KB | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 256K x 1 | (18) 256K x 1 |
DRAM SWITCHES (256KB ON MAINBOARD) | |||
Size | SW1/1 | SW1/2 | SW1/3 |
0KB | Off | On | On |
128KB | Off | On | Off |
256KB | Off | On | Off |
384KB | Off | On | Off |
512KB | Off | On | Off |
640KB | Off | On | Off |
896KB | Off | Off | Off |
1408KB | Off | Off | Off |
DRAM (512KB ON MAINBOARD) | |||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Bank 4 |
0KB | None | None | None | None | None |
128KB | (18) 64K x 1 | None | None | None | None |
256KB | (18) 64K x 1 | (18) 64K x 1 | None | None | None |
384KB | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | None | None |
512KB | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | None |
640KB 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 |
640KB 2 | (18) 64K x 1 | (18) 256K x 1 | None | None | None |
1152KB | (18) 64K x 1 | (18) 256K x 1 | (18) 256K x 1 | None | None |
1664KB | (18) 64K x 1 | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 | None |
2176KB | (18) 64K x 1 | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 |
DRAM SWITCHES (512KB ON MAINBOARD) | |||
Size | SW1/1 | SW1/2 | SW1/3 |
0KB | Off | On | On |
128KB | On | On | Off |
256KB | On | On | Off |
384KB | On | On | Off |
512KB | On | On | Off |
640KB 1 | On | On | Off |
640KB 2 | On | Off | Off |
1152KB | On | Off | Off |
1664KB | On | Off | Off |
2176KB | On | Off | Off |
DRAM (640KB ON MAINBOARD) | |||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Bank 4 |
0KB | None | None | None | None | None |
128KB | (18) 64K x 1 | None | None | None | None |
256KB | (18) 64K x 1 | (18) 64K x 1 | None | None | None |
384KB | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | None | None |
512KB 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | None |
512KB 2 | None | (18) 256K x 1 | None | None | None |
1MB 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 64K x 1 | (18) 256K x 1 |
1MB 2 | None | (18) 256K x 1 | (18) 256K x 1 | None | None |
1.5MB | None | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 | None |
2MB | None | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 |
2.5MB | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 |
DRAM SWITCHES (640KB ON MAINBOARD) | |||
Size | SW1/1 | SW1/2 | SW1/3 |
0KB | Off | On | On |
128KB | Off | Off | On |
256KB | Off | Off | On |
384KB | Off | Off | On |
512KB 1 | Off | Off | On |
512KB 2 | On | Off | On |
1MB 1 | Off | Off | On |
1MB 2 | On | Off | On |
1.5MB | On | Off | On |
2MB | On | Off | On |
2.5MB | On | Off | On |