Diagnostic Codes
The diagnostic codes may be a single byte or pair of bytes displayed in hex.
The following tables for each controller list the bit positions defined for each byte. A 1 bit indicates a failure. Diagnostic codes are computed by summing the value for each bit position using hexadecimal arithmetic.
IntelliTouch Serial Controller (2500S)
These controllers have a
BB.The AA byte is defined below. The BB byte is the same as the 4035 controller, defined above in Table A.1.
AA Bit | Value (hex) | Description |
|
|
|
7 | 80 | Touch microprocessor test incomplete |
6 | 40 | Reserved |
5 | 20 | Touch microprocessor test |
|
| connected |
4 | 10 | Nonvolatile RAM checksum test failure |
3 | 08 | RAM read/write test failure |
2 | 04 | ROM checksum test failure |
1 | 02 | Microprocessor logic/register test failure |
0 | 01 | Firmware/hardware compatibility test failure |
|
|
|
Table A.3 The IntelliTouch Serial Controller (2500S) bit position relating to each byte.
