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01/24/89
13:55:41
PAGE
7
,( ~rlHt:k XATEMENT
I'he
serial
channel
is provided
by an external
82510
UART
which
uses
the NM1
as an interrupt
to the processor.
The
addresses
associated
with
this
: device
are defined
below.
MCS- 96 MACRO
ASSEMBLER
EV96
EOll
EOO
i RUO
lEO0
lEO1
lEO1
lEO2
lE03
lE04
lE05
lE06
lEO7
lEO0
lEO4
Nb
1,"
'f,q
, I/
'Ii
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
;
dseg
at lEOOH
:
-------------
uart:
dsb
txd
rxd
baud
a lo
--
baud
a hi
--
gener-enabl
general-int
line-config
modem
contr
line status
-
modem
stats
addr GontrO
-
clock-confg
io
mode
-
1OOH
-7"
eq"
equ
equ
equ
equ
equ
ew
equ
ew
equ
uart
:byte
;
bank0
(if dlab=O)
or bank1
uart
:byte
; bank0
(if dlab=l)
uart+l
:byte
; bank0
(if dlab=l)
uart+l
:byte
; bank0
(if dlab=O)
"art+2
:byte
; bank0
"art+3
:byte
; bank0
uartt4
:byte
; bank0
uartt5
:byte
; bank0
uartt6
:byte
; bank0
uartt7
:byte
; bank0
uart
:byte
; bank3
uartt4
:byte
; bank3
;
The memory
map of the board
is changed
by reading
or writing
to an
; address
between
lOOOH
and
1DFFH.
In this
code,
this
is accomplished
by
; branching
to
address
lOOOH
to continue
RISM
execution.
The memory
map
; of this
board,
both
before
and after
RESET,
are as follows:
;
; Address
; OOOO-OOFFH
as data
Internal
Reg.
file
; OOOO-OOFFH
as code
RISM
Monitor
EPROM
; OlOO-1CFFH
Unused
; lDOO-1DFFH
RISM
Monitor
EPROM
; lEOO-1EFFH
External
UART
(U20)
; lFOO-1FFFH
Unused
(Port 3 & 4)
; 2000-2013H
RISM
Int. Vect.
EPROM
; 2014-202FH
RISM
EPROM
; 2030-203FH
RISM
Int. Vect.
EPROM
; 2040-207FH
Unused
RISM
EPROM
; 2080-27FFH
RISM
Monitor
EPROM
; 2800-5FFFH
16-Bit
Code/Data
RAM
; 6000-7FFFH
a-Bit
Code/Data
RAM
; 8000-FFFFH
Unused
Seject
After
RESET
After
REMAP
Internal
Reg.
file
RISM
Monitor
EPROM
Unused--User
expansion
possible
RISM
Monitor
EPROM
External
UART
(U20)
Unused
(Port 3 & 4)
User
Int. Vect.
RAM
(NOT TRAP!)
RISM
Data
RAM
User
Int. Vect.
RAM
(NOT NMI!)
User
Data
RAM
User
16-Bit
Code/Data
RAM
User
16-Bit
Code/Data
RAM
User
a-Bit
Code/Data
RAM
Unused--User
expansion
possible
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