ND 500 INTERFACE
Symbols mapping to functions in the ND-500 controller card
| IOX Offset | Octal | Enum | Symbol | Comment |
|---|---|---|---|---|
| +0 | 000000 | ReadMarX2 | RMAR5 |
Read MAR |
| +1 | 000001 | LoadMarX2 | LMAR5 |
Load MAR |
| +2 | 000002 | ReadStatusRegister | RSTA5 |
Read status |
| +3 | 000003 | LoadStatusRegister | LSTA5 |
Load status |
| +4 | 000004 | ReadControlRegister | RCON5 |
Read control |
| +5 | 000005 | LoadControlRegister | LCON5 |
Load control |
| +6 | 000006 | MasterClear | MCLR5 |
Master clear |
| +7 | 000007 | Terminate | TERM5 |
Terminate |
| +10 | 000010 | ReadTagIn | RTAG5 |
Read tag |
| +11 | 000011 | WriteTagOut | LTAG5 |
Write tag |
| +12 | 000012 | ReadLowerLimit | RLOW5 |
Read lower limit |
| +13 | 000013 | WriteDataX | LDAT5 or LLOW5 |
Load data / write lower |
| +14 | 000014 | ReadLockedMaybe | SLOC5 |
Possibly “slot” / “status lock” |
| +15 | 000015 | WriteData | BITM5, CLKD5, or S15 |
Unclear — may depend on context |
| +16 | 000016 | ReadLocked | UNLC5 |
Unlock — plausible |
| +17 | 000017 | LastIOX | RETG5 |
Return/End gate |