FASTBUS VLB Motherboard Settings and Configuration
DIAMOND MULTIMEDIA SYSTEMS, INC.
FASTBUS VLB
Processor | 80386DX/80486SX/80487SX/80486DX/80486DX2 |
Processor Speed | 25/33/40/50 (internal)/50/66(internal) MHz |
Chip Set | C & T |
Max. onboard DRAM | 128MB |
Cache | 64/256KB |
BIOS | C & T |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, serial ports (2) |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | BAT1 | Reset switch | CN7 |
Parallel port | CN1 | Speaker | CN8 |
Serial port (COM1) | CN2 | Turbo switch | CN9 |
Serial port (COM2) | CN3 | IDE interface LED | CN10 |
IDE interface | CN4 | Power LED & keylock | CN11 |
Floppy drive interface | CN5 | 32-bit VESA local bus slot | S1 |
Turbo LED | CN6 | 32-bit VESA local bus slot | S2 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
» | Onboard I/O controller enabled | J23 | Closed |
| Onboard I/O controller disabled | J23 | Open |
» | CMOS memory normal operation | JCOM | pins 2 & 3 closed |
| CMOS memory clear | JCOM | pins 1 & 2 closed |
» | Factory configured - do not alter | SW1/7 | Off |
» | Factory configured - do not alter | SW1/8 | Off |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
16MB | (1) 4M x 36 | NONE | NONE | NONE |
32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
32MB | (1) 8M x 36 | NONE | NONE | NONE |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
64MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
128MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 |
CACHE CONFIGURATION | |||
Size | S3 | JTAG1 | JTAG2 |
64KB | 64KB module | Installed | Not installed |
128KB | 256KB module | Not installed | Installed |
VESA CPU TYPE (ID0 & ID1) CONFIGURATION | ||
CPU Type | SW1/switch 1 (ID0) | SW1/2 (ID1) |
80386 | On | Off |
80486 | Off | On |
VESA WAIT STATE (ID2) CONFIGURATION | ||
Wait states | CPU speed | SW1/3(ID2) |
0 wait states | <=33MHz | Off |
1 wait state | >33MHz | On |
VESA BUS SPEED (ID3) CONFIGURATION | |
CPU speed | SW1/4 (ID3) |
<=33MHz | Off |
>33MHz | On |
VESA ID4 CONFIGURATION | |
Setting | SW1/5 (ID4) |
Reserved for future use | On |
CPU TYPE CONFIGURATION | ||||||
TYPE | JCALA | JNMI | JFERR | JIGN | JCLK | JCLK2 |
AMD386 | pins 1 & 2 | Open | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
80486SX | pins 2 & 3 | Open | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
80487SX | pins 2 & 3 | Closed | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
80486DX | pins 2 & 3 | Closed | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
80486DX2 | pins 2 & 3 | Closed | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
Note:AMD386 is a CPU module available from the manufacturer | ||||||
CPU SPEED CONFIGURATION | ||
TYPE | Speed | SW2/6 |
AMD386 | 40MHz | On |
80486SX | 25MHz | On |
80486SX | 33MHz | Off |
80487SX | 25MHz | On |
80487SX | 33MHz | Off |
80486DX | 25MHz | On |
80486DX | 33MHz | Off |
80486DX | 50MHz | Off |
80486DX2 | 50i MHz | On |
80486DX2 | 66i MHz | Off |
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