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Monitor Mode Commands
5-2
Terminology and Formatting
Terminology
Format
5-3
Monitor Mode Commands
Monitor Mode
To enter monitor mode from BASIC mode, key in "mon" followed by a carriage
return when the message "READY" is displayed on the console:
READY
mon
*
When in monitor mode a "
when in monitor mode, the BASIC LED on the ASCII Unit front panel is unlit.
To return to BASIC mode, key in CTRL+B.
Start address refers to the first memory address where a group of values stored
in consecutive memory locations is stored: e.g., an array or a block of data.
For some monitor mode commands, indicating a start address is optional. For
these commands, the address immediately following the highest or largest ad-
dress used by the previous monitor command is taken to be the start address for
the current monitor command. To simplify following explanations, this address
will be called the base address.
An assembly language program can be edited, traced, and debugged in moni-
tor mode.
Note that the address held in the program counter is the base address used for
displaying and writing data when using the monitor commands.
The left and right arrow brackets "<" and ">" that have been previously used to
denote "user supplied text" in BASIC programming format statements are used
as actual operators in monitor mode. Therefore, whenever you see an arrow
bracket character in a monitor mode command, it must be entered as such.
The arrow character is used to delineate address ranges.
For monitor format statements only, left and right parentheses "( )" will be used to
denote user supplied text.
Brackets "[ ]" still indicate optional entry. Pay close attention to periods "."; they
must be entered as such whenever indicated.
The carriage return key is indicated with
mand, a carriage return must be entered by the user.
Do not insert spaces within a monitor command unless explicitly indi-
cated.
In the following examples and also on the actual terminal the "
cates that the user must enter a command. Lines of text that do not start with a "
are generated by the computer in response to a user command.
The following table lists the monitor mode commands with a short description of
each command's function as well as the page number on which its detailed ex-
planation can be found.
To enter monitor mode, type mon and carriage return at the READY prompt.
Note Enter all command in all-caps while in monitor mode. Do not use lower case.
*
" is displayed on the left-side of the screen. Also,
. Whenever this appears in a com-
Section 5-3
*
" character indi-
*
"
69
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