MODEL 21 (1533-21-09-1) Hard Disk/Floppy Controller Settings and Configuration
GSI, INC.
MODEL 21 (1533-21-09-1)
Card Type | Hard drive controller |
Hard Drives supported | Two EIDE drives |
Floppy drives supported | Four 360KB, 720KB, 1.2MB, 1.44MB or 2.88MB drives |
Data Bus | 16-bit ISA |
Card Size | Half-length, half-height |
CONNECTIONS | |||
Function | Label | Function | Label |
34-pin secondary floppy connector | J2 | 40-pin EIDE connector | J6 |
34-pin primary floppy connector | J3 | Drive active LED | J8 |
Auxiliary power connector | J5 | ||
Note:J2 supports 2.88MB as well as standard floppy drives. J3 supports only standard floppy drives. | |||
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
| » | Factory configured - do not alter | J4 | Pins 1 & 2 open |
| » | Factory configured - do not alter | J4 | Pins 2 & 3 open |
| » | Primary mode enabled | J4 | Pins 5 & 6 closed |
Secondary mode enabled | J4 | Pins 4 & 5 closed | |
Note:Primary mode selects IRQ 14, I/O address 1F0h & 3F6h for hard drives, IRQ 6, DMA 2, I/O address 3F0h for floppy drives Secondary mode selects IRQ 15, I/O address 170h & 376h for hard drives, IRQ 6, DMA 2, I/O address 370h for floppy drives. | |||
BIOS ADDRESS SELECTION | |
Address | J4 |
C8000h | Pins 7 & 8, 10 & 11 closed |
CC000h | Pins 7 & 8, 11 & 12 closed |
D0000h | Pins 8 & 9, 10 & 11 closed |
E0000h | Pins 8 & 9, 11 & 12 closed |
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