ADDREG

Syntax ADDREG
Location TRAPS (DIY Toolkit Vol T)

This function returns the value of the following Machine code address register following the completion of a MTRAP, QTRAP or BTRAP command.

Command Machine Code Register Value Returned.
MTRAP A0
QTRAP A1
BTRAP A1 (relative to A6) - can be used by BPEEK%.

Example

You could replace the ALCHP function with:

100 bytes=100 : REMark Number of bytes required
110 MTRAP 24,bytes,-1
120 IF DATAREG < 0 : REPORT DATAREG : REMark an error has occurred
130 IF DATAREG (1) < bytes : PRINT 'Requested area not allocated':STOP
140 base=ADDREG

CROSS-REFERENCE

DATAREG allows you to read machine code data registers.

See MTRAP, QTRAP and BTRAP.