VESA VL-Local Bus
Table B.1 lists the pin connections for the 32-bit VL-local bus and it shows that, in addition to the standard ISA connector, there are two sides of connections, the A and the B side. Each side has 58 connections giving a total of 116 connections. It has a full 32-bit data and address bus. The 32 data lines are labelled DAT00–DAT31 and 32 address lines are labelled from ADR00-ADR31. Note that although the data and address lines are contained within the extra VL-local bus extension, some of the standard ISA lines are used, such as the IRQ lines.
Table B.1
32-bit VESA VL-local bus connections
Pin | Side-A | Side-B | Pin | Side-A | Side-B |
1 | D0 | D1 | 30 | A17 | A16 |
2 | D2 | D3 | 31 | A15 | A14 |
3 | D4 | GND | 32 | VCC | A12 |
4 | D6 | D5 | 33 | A13 | A10 |
5 | D8 | D7 | 34 | A11 | A8 |
6 | GND | D9 | 35 | A9 | GND |
7 | D10 | D11 | 36 | A7 | A6 |
8 | D12 | D13 | 37 | A5 | A4 |
9 | VCC ... |
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