147B CAMACFunction¶

Stub MON 147B (103 decimal) · Mnemonic CAMAC · Group: Device Handling (manual section 2.11)

Available from: not known - no compatibility box captured from the manual

Emulation source: src/handlers/mon_147B_CAMACFunction.c

Description¶

Operates the CAMAC, i.e. executes the NAF register. CAMAC is a standardized way to connect peripheral equipment to a computer.

NAF data looks like this:

15   13     9 8     5 4    0
-----------------------------
|  Q  X  | STATION | SUBADDRESS | FUNCTION |
-----------------------------

If Q=1 and/or X=1, then Q and X responses from the station are automatically checked.

A Control/Status register (COST register) holds some extra information. If the Function parameter is 3 (clear), the contents of COST are returned in the Value parameter. If Function=0 (read), data is returned in Value. For both these functions, parameter 2 must be >=0 on entry. If Function=1 (write) parameter 2 must be <0 before the call.

If bit 15 in Crate Number is set to 1, Value is treated as an integer instead of floating point.

Parameters¶

Name	Type	Direction	Description
`DataWord`	INTEGER2	In/Out	Input of data if write, output if read.
`RetStatus`	INTEGER2	Out	Return status (0 if OK, 24 if not OK).
`CrateNo`	INTEGER2	In	Crate number.
`StationNo`	INTEGER2	In	Station number.
`Subaddress`	INTEGER2	In	Subaddress.
`Func`	INTEGER2	In	Function: - 0 All registers - Read - 1 All registers - Write - 3 Selected Bit Clear - 5 Selected Bit Set - 7 Execute Dataway Cycle

Direction: In = the program supplies the value, Out = the call returns it, In/Out = both.

Compatibility¶

ND-100	ND-500	User programs	RT programs	System programs
Yes	Yes	Yes	Yes	No

From the YAML extraction; this call's page in the manual had no compatibility box that was captured.

Examples¶

From the manual (OCR text, not corrected).

PLANCFORTRANPascalCOBOLASSEMBLY-500MAC

INTEGER : DataWord, RetStatus, CrateNo, StationNo, Subaddress, Func
...
Monitor_Call('CAMACfunction', DataWord, RetStatus, CrateNo, &
             StationNo, Subaddress, Func)

INTEGER DataWord, RetStatus, CrateNo, StationNo, Subaddress, Func
...
Monitor_Call('CAMACfunction', DataWord, RetStatus, CrateNo,
             StationNo, Subaddress, Func)

DataWord, RetStatus, CrateNo, StationNo, Subaddress, Func : INTEGER2;
...
CAMACFunction(DataWord, RetStatus, CrateNo, StationNo, Subaddress, Func);

01 DataWord COMP.
01 RetStatus COMP.
01 CrateNo COMP.
01 StationNo COMP.
01 Subaddress COMP.
01 Func COMP.
...
MONITOR-CALL "CAMACFunction" USING DataWord, RetStatus,
CrateNo, StationNo, Subaddress, Func.

DataWord     : W BLOCK 1
RetStatus    : W BLOCK 1
CrateNo      : W BLOCK 1
StationNo    : W BLOCK 1
Subaddress   : W BLOCK 1
Func         : W BLOCK 1
ErrCode      : W BLOCK 1
CAMACfunction: EQU 37B9 + 147B
...
CALLG CAMACfunction, 6, DataWord, RetStatus, CrateNo, &
      StationNo, Subaddress, Func
IF K GO Error
...
Error, W1 =: ErrCode

LDT DATA   %Data if write.
LDA CRATE  %Crate number.
COPY SA DD
LDA CTRL   %Load register A.
MON 147    %Monitor call CAMACfunction.
STT DATA   %Store data if read.
STX STAT   %Store status.
...
STAT, 0
DATA, ...
CRATE, ...
CTRL, ...  %CAMAC control: station number/subaddress/function.

ndmonlib implementation¶

Stub Registered MON_STATUS_NOT_IMPLEMENTED: the handler is a stub. mon_dispatch() in src/core/mon_dispatch.c reports the call as unimplemented without calling it.


Handler	`mon_147B_CAMACFunction`
Code lines	10 (non-blank, non-comment lines in the file)

Source¶

SINTRAN III Monitor Calls (ND-860228.2 EN), page 100.