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Radio Shack TRS-80 Model 4 - Page 65

Radio Shack TRS-80 Model 4
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Example:
QllS,011
for AF'
for BC'
for HL'
for DE'
AF'
BC'
HL'
DE'
writes the byte value of
04 to port 45.
R (Register Pair)
Rregister pair code contents
Enter the above command line to change the specified register pair's
contents to the new
contents. There must be a space between
register pair code and contents.
The register pair codes are:
AF for AF
BC for BC
HL for HL
DE for
DE
IX for IX
IY for IY
SP for SP
Example:
RBC
3D01
changes the contents of register pair BC to the value
3001.
S (Full Screen Mode)
Press rn to change the monitor format from the register display
mode to full screen mode. The full screen mode displays a page of
memory (256 bytes) beginning with the current display address (see
the
0 command).
U (Update)
Press
aD
to constantly update the display and to show any active
background tasks. To cancel this command, hold down any key for
several seconds.
X (Return)
Press
00
to return the display to the normal register display mode.
; (Advance Memory)
Press
CD
to advance the memory display 64 bytes in the register
mode and 256 bytes
in
the full screen mode.
- (Decrement Memory)
Press G to decrement the memory display by 64 bytes
in
the
register mode and 256 bytes
in
the full screen mode.
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