IT486SMV MINI (Ver. 1.00) Motherboard Settings and Configuration
INFORMTECH INTERNATIONAL, INC.
IT486SMV MINI (Ver. 1.00)
Processor | 80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
Processor Speed | 20/25/33/50(internal)/66(internal)MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
SRAM Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 220mm x 230mm |
I/O Options | 32-bit VESA card slot (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP2 | Turbo switch | JP15 |
Reset switch | JP3 | Turbo LED | JP16 |
Power LED & keylock | JP9 | 32-bit VESA local bus slots | S1 & S2 |
Speaker | JP10 |
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USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | JP5 | open |
» | CMOS memory normal operation | JP6 | open |
| CMOS memory clear | JP6 | closed |
» | Wait states select zero | JP102 | pins 1 & 2 closed |
| Wait state select one | JP102 | pins 2 & 3 closed |
» | Local bus speed select £ 33MHz | JP103 | pins 1 & 2 closed |
| Local bus speed select > 33MHz | JP103 | pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
5MB | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 1M x 9 | (4) 4M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CPU TYPE CONFIGURATION | ||
Type | Jumper JP12 & JP13 | Jumper JP29 & JP30 |
80486DX2 | pins 1 & 2 closed | pins 1 & 2 closed |
ODP486SX | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX | pins 1 & 2 closed | pins 1 & 2 closed |
80487SX | pins 1 & 2 closed | pins 2 & 3 closed |
80486SX | pins 2 & 3 closed | pins 2 & 3 closed |
CPU SPEED CONFIGURATION | |||
Speed | Jumper JP7A | Jumper JP7B | Jumper JP7C |
66(internal)MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
50(internal)MHz | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |
33MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
25MHz | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |
20MHz | pins 2 & 3 closed | pins 1 & 2 closed | pins 1 & 2 closed |
SRAM JUMPER CONFIGURATION | ||||
Size | Jumper JP8A | Jumper JP8B | Jumper JP8D | Jumper JP8E |
64KB | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
128KB | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
256KB | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |
SRAM CONFIGURATION | ||||
Size | Max. Cacheable Memory | Cache SRAM | Location | TAG |
64KB | 16MB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 |
128KB | 32MB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 |
256KB | 32MB | (8) 32K x 8 | Banks 0 & 1 | (1) 32K x 8 |
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