DASH COMPUTER, INC.
486 VL3 CACHE (MV035E)
Device Type | Mainboard |
Processor | 80486SX/80487SX/80486DX/CX M6/CX M7/P24C/P24D/P24T |
Processor Speed | 25/33/40/50(internal)/50/66(internal)/100(internal)MHz |
Chip Set | OPTI |
Video Chip Set | None |
Maximum Onboard Memory | 128MB |
Maximum Video Memory | None |
Cache | 64/128/256/512KB |
BIOS | Award |
Dimensions | 250mm x 220mm |
I/O Options | 32-bit VESA local bus slots (3), green PC connector |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J2 | Speaker | JP38 |
Power LED & keylock | J22 | Green PC connector | JP39 |
Green PC connector | JP6 | Green PC LED | JP41 |
Turbo LED | JP34 | Reset switch | S1 |
Turbo switch | JP36 | 32-bit VESA local bus slots | SL1 – SL3 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
Monitor type select color | JP1 | Closed | |
Monitor type select monochrome | JP1 | Open | |
» | CMOS memory normal operation | JP2 | Pins 2 & 3 closed |
CMOS memory clear | JP2 | Pins 1 & 2 closed | |
» | Factory configured - do not alter | JP7 | Closed |
» | Factory configured - do not alter | JP31 | Pins 2 & 3 closed |
DRAM CONFIGURATION 1 | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (4) 256K x 9 | None | None | None |
2MB | (4) 256K x 9 | (1) 256K x 36 | None | None |
4MB | (4) 1M x 9 | None | None | None |
4MB | (4) 256K x 9 | (1) 256K x 36 | (1) 256K x 36 | (1) 256K x 36 |
5MB | (4) 256K x 9 | (1) 1M x 36 | None | None |
6MB | (4) 256K x 9 | (1) 256K x 36 | (1) 1M x 36 | None |
8MB | (4) 1M x 9 | (1) 1M x 36 | None | None |
8MB | (4) 1M x 9 | None | (1) 1M x 36 | None |
10MB | (4) 256K x 9 | (1) 256K x 36 | (1) 1M x 36 | (1) 1M x 36 |
12MB | (4) 1M x 9 | None | (1) 1M x 36 | (1) 1M x 36 |
16MB | (4) 4M x 9 | None | None | None |
16MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
17MB | (4) 256K x 9 | (1) 4M x 36 | None | None |
20MB | (4) 1M x 9 | (1) 4M x 36 | None | None |
20MB | (4) 1M x 9 | None | (1) 4M x 36 | None |
32MB | (4) 4M x 9 | (1) 4M x 36 | None | None |
64MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
80MB | (4) 4M x 9 | (1) 16M x 36 | None | None |
96MB | (4) 4M x 9 | (1) 16M x 36 | (1) 4M x 36 | None |
112MB | (4) 4M x 9 | (1) 16M x 36 | (1) 4M x 36 | (1) 4M x 36 |
DRAM CONFIGURATION 2 | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | None | (1) 256K x 36 | None | None |
4MB | None | (1) 1M x 36 | None | None |
8MB | None | (1) 1M x 36 | (1) 1M x 36 | None |
12MB | None | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
16MB | None | (1) 4M x 36 | None | None |
20MB | None | (1) 1M x 36 | (1) 4M x 36 | None |
32MB | None | (1) 4M x 36 | (1) 4M x 36 | None |
64MB | None | (1) 16M x 36 | None | None |
80MB | None | (1) 16M x 36 | (1) 4M x 36 | None |
96MB | None | (1) 16M x 36 | (1) 4M x 36 | (1) 4M x 36 |
72MB | None | (1) 16M x 36 | (1) 1M x 36 | (1) 1M x 36 |
128MB | None | (1) 16M x 36 | (1) 16M x 36 | None |
DRAM JUMPER CONFIGURATION | |
Configuration | JP5 |
1 | Pins 2 & 3 closed |
2 | Pins 1 & 2 closed |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | None | (1) 8K x 8 |
256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 16K x 8 |
256KB (B) | (2) 64K x 32 | None | (1) 32K x 8 |
512KB | (4) 128K x 8 | None | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size | JP8 | JP27 | JP28 | JP43 | JP44 |
64KB | 2 & 3 | Open | Open | Open | 1 & 2 |
128KB | 1 & 2 | Closed | Open | Open | 1 & 2 |
256KB (A) | 2 & 3 | Closed | Closed | Open | 2 & 3 |
256KB (B) | 2 & 3 | Closed | Closed | Open | 1 & 2 |
512KB | 1 & 2 | Closed | Closed | Closed | 1 & 2 |
Note: Pins designated should be in the closed position. |
CPU SPEED SELECTION | |||
Speed | JP16 | JP17 | JP18 |
25MHz | Open | Open | Open |
33MHz | Open | Closed | Closed |
40MHz | Open | Closed | Open |
50iMHz | Open | Open | Open |
50MHz | Open | Open | Closed |
66iMHz | Open | Closed | Closed |
100iMHz | Open | Closed | Closed |
CPU TYPE SELECTION | |||||||
Type | JP9 | JP11 | JP12 | JP13 | JP15 | JP23 | JP32 |
80486SX | Open | 1 & 2 | Open | Open | Open | 2 & 3 | Open |
80487SX | Open | 1 & 2 | Open | 2 & 3 | Open | 1 & 2, 3 & 4 | Open |
80486DX | Open | 1 & 2 | Open | 1 & 2 | Open | 1 & 2, 3 & 4 | Open |
CX M6 | Closed | 2 & 3 | 2 & 3 | Open | Open | 2 & 3 | 1 & 2 |
CX M7 | Closed | 2 & 3 | 2 & 3 | 1 & 2 | Open | 1 & 2, 3 & 4 | Open |
P24C | Open | 1 & 2 | Open | 1 & 2 | Open | 1 & 2, 3 & 4 | Open |
P24D | Open | 2 & 3 | Open | 1 & 2 | Closed | 1 & 2, 3 & 4 | 2 & 3 |
P24T | Open | 2 & 3 | Open | 1 & 2 | Open | 1 & 2, 3 & 4 | Open |
Note: Pins designated should be in the closed position. |
CPU TYPE SELECTION (SL/NON-SL CPU) | ||||
Type | JP10 | JP12 | JP20 | JP21 |
SL-enhanced | Open | Open | Open | Open |
Non SL-enhanced | Closed | Pins 1 & 2 closed | Closed | Closed |
CPU TYPE SELECTION (CX M7) | |
Type | JP22 |
All CPU types | Open |
CX M7 2x | Closed |
CPU TYPE SELECTION (P24D ONLY) | |
Type | JP19 |
Write through | Pins 2 & 3 closed |
Write back | Pins 1 & 2 closed |
CPU MULTIPLIER SELECTION (80486DX4 ONLY) | |
Multiplier | JP30 |
2x | Pins 1 & 2 closed |
2.5x | Pins 2 & 3 closed |
3x | Open |
CPU VOLTAGE SELECTION | |
Voltage | JP29 |
3.45v | Pins 3 & 5, 4 & 6 closed |
5v | Pins 1 & 3, 2 & 4 closed |
VL BUS WAIT STATE SELECTION | |
Setting | JP35 |
0 | Open |
1 | Closed |
VL BUS SPEED SELECTION | ||
Speed | JP33 | JP37 |
<= 33MHz | Pins 2 & 3 closed | Open |
>33 MHz | Pins 1 & 2 closed | Closed |