
3 Debugger and DOS
VEC Display OS vectors
HAT Display handler table
M Display memory usage map
PB
Display content of the memory management register
PORTB
(controls access to
RAM extension, OS, BASIC)
PB<value Set content of the memory management register PORTB to value
DIO Display direct I/O mode
DIO<value
Activate/deactivate direct I/O mode, use with caution
R Display registers
R<value1,value2...
Change registers
G start Set return address for resuming to start
/start,end/value...
Search for value... in the memory area from address start. . . end
BM start,end,target
Move the memory area from start...end to
target...target+(end−start)
BS start,end,value
Set memory area from start...end to value
BC start,end,start2
Compare memory area from
start...end
to the memory area starting at
start2
PR<value Activate/deactivate printer output
; TEXT Print a text or comment
SR number
Read sector number
SW number
Write sector number
SIO ... Execute SIO command
SIOR Reset high speed SIO routine
V
Display interrupt and content of the register
VCOUNT
at the time of the freeze
V<value
Set the content of the register
VCOUNT
for the time when program will be
resumed
a COMMAND...
AtariSIO remote control
VER Display freezer software version
30
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