Field Name | Length | Definition |
Vendor ID Byte 0 | 8 bits | Bit[7] 0 Bits[6:2] First character in compressed ASCII Bits[1:0] Second character in compressed ASCII bits[4:3] |
Vendor ID Byte 1 | 8 bits | Bits[7:5] Second character in compressed ASCII bits[2:0] Bits[4:0] Third character in compressed ASCII |
Vendor ID Byte 2 | 8 bits | (Vendor Assigned)
Bits[7:4] First hexadecimal digit of product number (bit 7 is msb) Bits[3:0] Second hexadecimal digit of product number (bit 3 is msb) |
Vendor ID Byte 3 | 8 bits | (Vendor Assigned)
Bits[7:4] Third hexadecimal digit of product nmber (bit 7 is msb) Bits[3:0] Hexadecimal digit of revision level (bit 3 is msb) |
Serial/Unique Number Byte 0 | 8 bits | Unique device number so the system can differentiate between multiple cards of the same type in one system. Bits[7:0] |
Serial Number Byte 1 | 8 bits | Serial Number Bits[15:8] |
Serial Number Byte 2 | 8 bits | Serial Number Bits[23:16] |
Serial Number Byte 3 | 8 bit | Serial Number Bits [31:24] |
Checksum | 8 bits | Checksum of ID and serial number verifies that the information has been correctly read from a Plug and Play ISA card. |