User`s guide
Examples of the MICROSTEP command are shown below.
»)M
2<CR)
»)
»)M<CR)
<SPACE)
<CR)
»)
»)
2.5.11 NEXT Command
The
NEXT
command
is:
UPC=nnnnnnnn
UPC=nnnnnnnn
UPC=nnnnnnnn
UPC=nnnnnnnn
UPC=nnnnnnnn
N[(space>(COUNT>](CR>
The
console
stops
the
CPU
clock
and
executes
two
micro-
instructions.
Address
of
next
instruction.
Address
of
next
instruction.
Address
of
next
instruction.
Start
CPU
clock
and
enter
idle
loop.
Stop
CPU
clock,
execute
one
microinstruction
and
enter
space-bar
STEP
mode.
Address
of
next
instruction.
Space-bar
depressed.
Execute
instruction
at
last
address.
Start
CPU
clock
and
enter
idle
loop.
The
NEXT
command executes the number of macroinstructions indicated
by
<COUNT>.
The console
enters the program
I/O
mode to perform the instruction, prints the halt code and current contents of the
PC, then returns to the console
I/O
mode idle loop after the
<COUNT>
completes.
If
no
number
is
given for the
<COUNT>,
one instruction
is
executed and console enters the space-bar
STEP
mode. In space-bar STEP mode, the next microinstruction
is
executed when the space-bar
is
depressed. The console enters the console
I/O
mode idle loop from the space-bar STEP mode when a
<CR>
is
typed.
NOTE
During execution
of
the NEXT command, interrupts
are
blocked.
Examples
of
the
NEXT
command are shown below.
»)N
2<CR)
?nn
PC=nnnnnnnn
?nn
PC-nnnnnnnn
?nn
PC-nnnnnnnn
»)
»)N<CR)
?nn
PC=nnnnnnnn
<SPACE)
?nn
PC=nnnnnnnn
<CR)
»)
»)
The
console
executes
two
macro-
instructions.
Halt
code
and
next
address.
Halt
code
and
next
address.
Halt
code
and
next
address.
Enters
idle
loop.
Executes
one
macroinstruction
and
enter
space-bar
STEP
mode.
Halt
code
and
next
address.
Space-bar
depressed.
Halt
code
and
next
address.
Enters
idle
loop.
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