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MCS-96
MACRO
ASSEMBLER
EV96
01/24/89
13:55:41
PAGE
14
ERR LOC
OBJECT
i,lNE
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5OURCE
STATEMENT
Al78
A17E
C701041E38
Al83
65040018
Al87
C83A
Al89
C83C
A18D
A18D
CC3C
A18F
CC3A
A191
A191
C92221
Al94
C90000
A19A
C701041E38
, The
following
routines,
all
named
beginning
with
a 'd' for diagnostics,
; are special
cases
of RISM
commands
used
when
the board
is in diagnostics
;
mode.
;
dSTART_USER:
.---------_
,
; Flush
the pause
routine
off
the
stack
and set up user's
context.
SET-BIT
RISM-STAT,
RUN-FLAG
CLR-BIT
RISM-STAT,
TRAP-FLAG
stb
RISM-STAT,
modem-contr[Ol
; update
running
signal
to host
add
sp,#4
push
dUSER
PC
push
dUSER:PSW
EXIT
RISM
-
; reset
sp to overwrite
RISM
pc & psw,
;
with
user
pc &
;
user
psw values
&TOP-USER:
: ---------
i
stops
"user"
execution
by setting
up the
stack
to return
to pause
with
i all interrupts
but
serial
i/o locked
out.
POP
dUSER_PSW
; remove
users
psw
& pc from
stack
POP
dUSER_PC
i
and save
dset-rism-idle:
push
#(diaggause-offset)
;
the new program
counter
& psw
push
Irism-psw
CLR-BIT
RISM-STAT,
RUN-FLAG
stb
RISM-STAT,
modem-contr[O]
; update
running
signal
to host
EXIT
RISM
-
;
Seject
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