Breaks On Specific Conditions - Oki Dr.63514 User Manual

Chapter 2. Functions

2.3.2.2 Breaks on Specific Conditions

These breaks are the result of specific conditions involving flag bits and counters.
(1) Breakpoint break
For each code memory address, the emulator provides a breakpoint bit for enabling these breaks.
Setting a breakpoint at a code memory address sets the corresponding breakpoint bit to "1."
Code memory
0000H
0001H
0002H
0003H
0004H
0FFFDH
0FFFEH
0FFFFH
If these breaks are enabled, execution of the instruction at that address produces a break request of this
type.
________________________________________________________________________________________________________________
n Note 1 n
There are no limits on the number of breakpoints or their locations in the code memory space.
Breakpoint settings at the following addresses, however, never produce breaks.
(a) ROM table locations
NOP
100H
MOVLB [HL],323H
101H
Table data
323H
2-16
Breakpoint
bit memory
Code memory
Address specified by program
counter (PC).
Breakpoint break request
Breakpoint
bit memory
0
0
The breakpoint bit for address
0
323H is never accessed.
Breakpoint break specification
1
0