Difference between revisions of "3Com 3C501"
From Computer History Wiki
m (Jnc moved page 3com 3c501 to 3Com 3C501: correct caos) |
(+3C501 cable connections image) |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
| + | [[Image:3com 3c501 front.jpg|300px|thumb|right|A 3C501]] | ||
| + | |||
| + | The '''3C501''' from [[3Com]] was a very popular [[Ethernet]] interface [[printed circuit board|card]] for early [[IBM PC]]s and [[IBM-compatible PC]]s. | ||
| + | |||
ETHERLINK (3C501; ASSY.#1221) | ETHERLINK (3C501; ASSY.#1221) | ||
| − | |||
| − | |||
{| | {| | ||
| Line 25: | Line 27: | ||
|Available | |Available | ||
|} | |} | ||
| − | |||
CABLE TYPE SELECTION | CABLE TYPE SELECTION | ||
| Line 52: | Line 53: | ||
|Pins 1 & 2 Closed | |Pins 1 & 2 Closed | ||
|} | |} | ||
| − | |||
I/O BASE ADDRESS SELECTION | I/O BASE ADDRESS SELECTION | ||
| Line 81: | Line 81: | ||
|Pins 1 & 2 | |Pins 1 & 2 | ||
|} | |} | ||
| − | Note:Pins designated should be in the closed position. | + | Note: Pins designated should be in the closed position. |
| − | |||
BOOT ROM ADDRESS SELECTION | BOOT ROM ADDRESS SELECTION | ||
| Line 116: | Line 115: | ||
|Pins 1&2 | |Pins 1&2 | ||
|} | |} | ||
| − | Note:Pins designated should be in the closed position. | + | Note: Pins designated should be in the closed position. |
| + | [[Image:3com 3c501 blade.jpg|300px|thumb|right|3C501 cable connections]] | ||
INTERRUPT REQUEST SELECTION | INTERRUPT REQUEST SELECTION | ||
| Line 177: | Line 177: | ||
|Closed | |Closed | ||
|} | |} | ||
| − | |||
DMA CHANNEL SELECTION | DMA CHANNEL SELECTION | ||
| Line 214: | Line 213: | ||
|} | |} | ||
| − | {{stub}} | + | {{semi-stub}} |
| − | [[Category: | + | [[Category: Ethernet Interfaces]] |
Latest revision as of 15:15, 24 April 2024
The 3C501 from 3Com was a very popular Ethernet interface card for early IBM PCs and IBM-compatible PCs.
ETHERLINK (3C501; ASSY.#1221)
| NIC Type | Ethernet |
| Transfer Rate | 10Mbps |
| Data Bus | 8-bit ISA |
| Topology | Linear Bus |
| Wiring Type | RG-58A/U 50ohm coaxial |
| AUI transceiver via DB-15 port | |
| Boot ROM | Available |
CABLE TYPE SELECTION
| Type | Setting |
|---|---|
| RG-58A/U 50ohm coaxial | Option 1 |
| AUI transceiver via DB-15 port | Option 2 |
BOOT ROM CONFIGURATION
| Setting | JP3 |
|---|---|
| Disabled | Pins 2 & 3 Closed |
| Enabled | Pins 1 & 2 Closed |
I/O BASE ADDRESS SELECTION BOOT ROM CONFIGURATION
| Address | JP4 | JP5 | JP6 | JP7 | JP8 | JP9 |
|---|---|---|---|---|---|---|
| 300h | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
| 310h | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
Note: Pins designated should be in the closed position.
BOOT ROM ADDRESS SELECTION
| Address | JP12 | JP13 | JP14 | JP15 | JP16 | JP17 | JP18 | JP19 |
|---|---|---|---|---|---|---|---|---|
| CC000h | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 1&2 |
| EC000h | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 1&2 |
Note: Pins designated should be in the closed position.
INTERRUPT REQUEST SELECTION
| IRQ | JP20 | JP21 | JP22 | JP23 | JP24 | JP25 |
|---|---|---|---|---|---|---|
| 2 | Closed | Open | Open | Open | Open | Open |
| 3 | Open | Closed | Open | Open | Open | Open |
| 4 | Open | Open | Closed | Open | Open | Open |
| 5 | Open | Open | Open | Closed | Open | Open |
| 6 | Open | Open | Open | Open | Closed | Open |
| 7 | Open | Open | Open | Open | Open | Closed |
DMA CHANNEL SELECTION
| Channel | JP26 | JP27 | JP28 | JP29 | JP30 | JP31 |
|---|---|---|---|---|---|---|
| DMA1 | Closed | Open | Open | Closed | Open | Open |
| DMA2 | Open | Closed | Open | Open | Closed | Open |
| DMA3 | Open | Open | Closed | Open | Open | Closed |
