EISA=Extended Industry Standard Architecture.
Developed by Compaq, AST, Zenith, Tandy...
+---------------------------------------------+
| (component side) |
| |
|___________ ISA-16bit __ ISA-8bit __|
||||||||||| ||||||||||||||||||| A1(front)/B1(back)
| | | | | | | | | | | | | | EISA: E1(front)/F1(back)
C1/D1
G1/H1
A,C,E,G=Component Side A,B,F,H=Sold Side
(At the computer)
62+38 PIN EDGE CONNECTOR at the computer.
| Pin | Name | Description |
|---|---|---|
| E1 | CMD# | Command Phase |
| E2 | START# | Start Phase |
| E3 | EXRDY | EISA Ready |
| E4 | EX32# | EISA Slave Size 32 |
| E5 | GND | Ground |
| E6 | KEY | Access Key |
| E7 | EX16# | EISA Slave Size 16 |
| E8 | SLBURST# | Slave Burst |
| E9 | MSBURST# | Master Burst |
| E10 | W/R# | Write/Read |
| E11 | GND | Ground |
| E12 | RES | Reserved |
| E13 | RES | Reserved |
| E14 | RES | Reserved |
| E15 | GND | Ground |
| E16 | KEY | Access Key |
| E17 | BE1# | Byte Enable 1 |
| E18 | LA31# | Latchable Addressline 31 |
| E19 | GND | Ground |
| E20 | LA30# | Latchable Addressline 30 |
| E21 | LA28# | Latchable Addressline 28 |
| E22 | LA27# | Latchable Addressline 27 |
| E23 | LA25# | Latchable Addressline 25 |
| E24 | GND | Ground |
| E25 | KEY | Access Key |
| E26 | LA15 | Latchable Addressline 15 |
| E27 | LA13 | Latchable Addressline 13 |
| E28 | LA12 | Latchable Addressline 12 |
| E29 | LA11 | Latchable Addressline 11 |
| E30 | GND | Ground |
| E31 | LA9 | Latchable Addressline 9 |
| F1 | GND | Ground |
| F2 | +5V | +5 VDC |
| F3 | +5V | +5 VDC |
| F4 | --- | |
| F5 | --- | |
| F6 | KEY | Access Key |
| F7 | --- | |
| F8 | --- | |
| F9 | +12V | +12 VDC |
| F10 | M/IO# | Memory/Input-Output |
| F11 | LOCK# | Lock bus |
| F12 | RES | Reserved |
| F13 | GND | Ground |
| F14 | RES | Reserved |
| F15 | BE3# | Byte Enable 3 |
| F16 | KEY | Access Key |
| F17 | BE2# | Byte Enable 2 |
| F18 | BE0# | Byte Enable 0 |
| F19 | GND | Ground |
| F20 | +5V | +5 VDC |
| F21 | LA29# | Latchable Addressline 29 |
| F22 | GND | Ground |
| F23 | LA26# | Latchable Addressline 26 |
| F24 | LA24# | Latchable Addressline 24 |
| F25 | KEY | Access Key |
| F26 | LA16 | Latchable Addressline 16 |
| F27 | LA14 | Latchable Addressline 14 |
| F28 | +5V | +5 VDC |
| F29 | +5V | +5 VDC |
| F30 | GND | Ground |
| F31 | LA10 | Latchable Addressline 10 |
| G1 | LA7 | Latchable Addressline 7 |
| G2 | GND | Ground |
| G3 | LA4 | Latchable Addressline 4 |
| G4 | LA3 | Latchable Addressline 3 |
| G5 | GND | Ground |
| G6 | KEY | Access Key |
| G7 | D17 | Data 17 |
| G8 | D19 | Data 19 |
| G9 | D20 | Data 20 |
| G10 | D22 | Data 22 |
| G11 | GND | Ground |
| G12 | D25 | Data 25 |
| G13 | D26 | Data 26 |
| G14 | D28 | Data 28 |
| G15 | KEY | Access Key |
| G16 | GND | Ground |
| G17 | D30 | Data 30 |
| G18 | D31 | Data 31 |
| G19 | MREQx | Master Request |
| H1 | LA8 | Latchable Addressline 8 |
| H2 | LA6 | Latchable Addressline 6 |
| H3 | LA5 | Latchable Addressline 5 |
| H4 | +5V | +5 VDC |
| H5 | LA2 | Latchable Addressline 2 |
| H6 | KEY | Access Key |
| H7 | D16 | Data 16 |
| H8 | D18 | Data 18 |
| H9 | GND | Ground |
| H10 | D21 | Data 21 |
| H11 | D23 | Data 23 |
| H12 | D24 | Data 24 |
| H13 | GND | Ground |
| H14 | D27 | Data 27 |
| H15 | KEY | Access Key |
| H16 | D29 | Data 29 |
| H17 | +5V | +5 VDC |
| H18 | +5V | +5 VDC |
| H19 | MAKx | Master Acknowledge |