J-BOND COMPUTER SYSTEMS CORPORATION
PCI 486
Processor | 80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive |
Processor Speed | 25/33/50(internal)/66(internal)MHz |
Chip Set | Intel |
Max. Onboard DRAM | 128MB |
Cache | 64/128/256/512KB |
BIOS | Phoenix |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit PCI bus slots (3), SCSI interface |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Speaker | J1 | IDE interface LED | J9 |
Reset switch | J2 | SCSI interface | CN1 |
Power LED & keylock | J3 | 32-bit PCI bus slots | P1, P2, P3 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | J8 | Open |
| CMOS memory clear | J8 | Closed |
» | External cache wait state select 0 wait state | J14 | pins 2 & 3 closed |
| External cache wait state select 1 wait state | J14 | pins 1 & 2 closed |
» | Factory configured - do not alter | J15 | Open |
» | Factory configured - do not alter | J16 | Open |
» | Factory configured - do not alter | J17 | Open |
» | Factory configured - do not alter | J20 | Open |
» | Factory configured - do not alter | J21 | Open |
» | SCSI terminator term power select internal | J24 | Closed |
| SCSI terminator term power select external peripheral | J24 | Open |
» | SCSI IRQ select IRQ11 | J114 | pins 2 & 3 closed |
| SCSI IRQ select IRQ9 | J114 | pins 1 & 2 closed |
» | External cache enabled | JP17 | pins 2 & 3 closed |
| External cache disabled | JP17 | pins 1 & 2 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
2MB | (2) 256K x 36 | NONE |
4MB | (2) 256K x 36 | (2) 256K x 36 |
4MB | (2) 512K x 36 | NONE |
6MB | (2) 256K x 36 | (2) 512K x 36 |
6MB | (2) 512K x 36 | (2) 256K x 36 |
8MB | (2) 512K x 36 | (2) 512K x 36 |
8MB | (2) 1M x 36 | NONE |
10MB | (2) 256K x 36 | (2) 1M x 36 |
10MB | (2) 1M x 36 | (2) 256K x 36 |
12MB | (2) 512K x 36 | (2) 1M x 36 |
12MB | (2) 1M x 36 | (2) 512K x 36 |
16MB | (2) 1M x 36 | (2) 1M x 36 |
16MB | (2) 2M x 36 | NONE |
18MB | (2) 256K x 36 | (2) 2M x 36 |
18MB | (2) 2M x 36 | (2) 256K x 36 |
20MB | (2) 512K x 36 | (2) 2M x 36 |
20MB | (2) 2M x 36 | (2) 512K x 36 |
24MB | (2) 1M x 36 | (2) 2M x 36 |
24MB | (2) 2M x 36 | (2) 1M x 36 |
32MB | (2) 2M x 36 | (2) 2M x 36 |
32MB | (2) 4M x 36 | NONE |
34MB | (2) 256K x 36 | (2) 4M x 36 |
34MB | (2) 4M x 36 | (2) 256K x 36 |
36MB | (2) 512K x 36 | (2) 4M x 36 |
36MB | (2) 4M x 36 | (2) 512K x 36 |
DRAM CONFIGURATION (CON'T) | ||
Size | Bank 0 | Bank 1 |
40MB | (2) 1M x 36 | (2) 4M x 36 |
40MB | (2) 4M x 36 | (2) 1M x 36 |
48MB | (2) 2M x 36 | (2) 4M x 36 |
48MB | (2) 4M x 36 | (2) 2M x 36 |
64MB | (2) 4M x 36 | (2) 4M x 36 |
64MB | (2) 8M x 36 | NONE |
66MB | (2) 256K x 36 | (2) 8M x 36 |
66MB | (2) 8M x 36 | (2) 256K x 36 |
68MB | (2) 512K x 36 | (2) 8M x 36 |
68MB | (2) 8M x 36 | (2) 512K x 36 |
72MB | (2) 1M x 36 | (2) 8M x 36 |
72MB | (2) 8M x 36 | (2) 1M x 36 |
80MB | (2) 2M x 36 | (2) 8M x 36 |
80MB | (2) 8M x 36 | (2) 2M x 36 |
96MB | (2) 4M x 36 | (2) 8M x 36 |
96MB | (2) 8M x 36 | (2) 4M x 36 |
128MB | (2) 8M x 36 | (2) 8M x 36 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 32K x 8; (1) 16K x 8; (1) 8K x 8 |
128KB | (4) 32K x 8 | NONE | (1) 32K x 8; (1) 16K x 8; (1) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8; (1) 16K x 8 |
512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size | J5 | J6 | J7 | J11 | J18 | J19 |
64KB | Open | Open | Open | 2 & 3 | 1 & 2 | 1 & 2 |
128KB | Open | Closed | Open | 1 & 2 | 2 & 3 | 1 & 2 |
256KB | Open | Closed | Closed | 1 & 2 | 1 & 2 | 2 & 3 |
512KB | Closed | Closed | Closed | 1 & 2 | 2 & 3 | 2 & 3 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |||||
Type | KC1 | KC2 | KC3 | KC4 | KC5 |
80486SX | Open | Open | Open | Closed | Open |
80487SX | Open | Closed | Closed | Open | Closed |
80486DX/DX2 | Closed | Open | Closed | Open | Closed |
Overdrive | Open | Closed | Closed | Open | Closed |
CPU SPEED CONFIGURATION | ||
CPU speed | J13 | J103 |
25MHz | pins 1 & 2 closed | Open |
33MHz | pins 2 & 3 closed | Closed |
50iMHz | pins 1 & 2 closed | Open |
66iMHz | pins 2 & 3 closed | Closed |
PCI MASTER CONFIGURATION | |||
Master | J104 | J105 | |
» | PCI 3 | pins 2 & 3 closed | pins 2 & 3 closed |
| PCI 1 | pins 1 & 2 closed | pins 1 & 2 closed |
PCI MASTER CONFIGURATION | |||
Master | J106 | J107 | |
» | SCSI | pins 2 & 3 closed | pins 2 & 3 closed |
| PCI 2 | pins 1 & 2 closed | pins 1 & 2 closed |
PCI IRQ CONFIGURATION | ||||||
IRQ | J36C/B/A | J39C/B/A | J40C/B/A | J42C/B/A | J43C/B/A | J113C/B/A |
IRQ3 | Closed | Open | Open | Open | Open | Open |
IRQ5 | Open | Closed | Open | Open | Open | Open |
IRQ10 | Open | Open | Closed | Open | Open | Open |
IRQ11 | Open | Open | Open | Closed | Open | Open |
IRQ14 | Open | Open | Open | Open | Closed | Open |
IRQ15 | Open | Open | Open | Open | Open | Closed |