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User Manual for Microboard Computer Development System CDP18S693 & CDP18S694
66
813B F 8 0 0 3 8 ;
0359 READAH: LDI 0;SKP
813E
0360
*
813E 9 3 ;
0361 READ:
813F >
0362
813F AF;
0363 READ1:
8140 >
0364
8140 F880BF;
0365 READ2:
8143 3F43
0366
8145 3745
0367
8147 DC02
0368
8149 ;
0369
8149 E2E2,
0370 NOBIT:
814B >
0371
0372 BIT:
814B 9EF6
0373
814D 3357
814F 3754
0374
0375
8151 7B;
8152 3059
0376
8154
0377
•
0378 OUTBIT: REQ
8154 7A;
8155 3059
0379
0380
8157 »
0381 READ3:
8157 C4C4
0382
8159 >
0383 NOECHO: SEP DELAY; ,#07
8159 DC07
815B C4C4
0384
815D 9FF6BF;
0385
0386
8160 3369
0387
8162 F980
0388
8164 3F49
0389
8166 BF;
8167 304B ;
0390
0391
8169 >
0392 NEXT:
8169 7A;
816A 3240 ;
0393
0394
816C 8F;
816D 3A39 ;
0395
0396
816F >
0397 CKHXE:
816F 9FFF41;
0398
8172 3B2F
8174 FF06
0399
0400
8176 3337
0401
8178 FC10
0402
817A >
0403 FND:
817A AE;
0404
817B 9D:
817C FEFEFEFE52;
0405
0406
8181 8D;
8182 F6F6F6F6;
0407
8186 FlBD ;
0408
0409
8188 8D;
8189 FEFEFEFE52;
0410
818E 8EFA0F;
0411
8191 FlAD ;
0412
8193 FF00 ;
0413
8195 3039 ;
0414
0415
8197
5
0416
8197 )
0417
8197
y
8197
0418
y
GHI PC
PLO CHAR
LDI # 8 0 ; PHI CHAR
BN4 *
B4 *
SEP DELAY; ,# 0 2
SEX SP; SEX SP
GHI AUX;SHR
BDF READ3
B4 OUTBIT
SEQ
BR NOECHO
BR NOECHO
NOP; NOP
NOP; NOP
GHI CHAR;SHR;PHI CHAR
BDF NEXT
ORI #80
BN4 NOBIT
PHI CHAR
BR BIT
REQ
BZ READ2
GLO CHAR
BNZ REXIT
GHI CHAR;SMI #41
BNF CKDEC
SMI 6
BDF NFND
ADI #10
PLO AUX
GHI ASL
SHL;SHL;SHL;SHL; STR SP
GLO ASL
SHR;SHR;SHR;SHR
OR;PHI ASL
GLO ASL
SHL;SHL;SHL;SHL; STR SP
GLO AUX;ANI #0F
OR;PLO ASL
SMI 0
BR REXIT
# **********************************5¾ -************
. .
TYPES ONE BYTE FROM CHAR.1 AS AN ASCII
. .
CHARACTER OR ASi TW O HEX DIGITS.
..S K IP TO READ1 WITH D=0
..CONSTANT GREATER THAN 0
..SAVE ENTRY POINT
..B I T COUNT, ;SHR; UNTIL DF:
.WAIT FOR END OF DATA BIT
.WAIT FOR START BIT
..HALF BIT TIME DELAY
. .DELAY
..ECHO ?
..B R IF NO
.I S IT A 1 ?
..NO
..YES
. . DELAY
..ONE BIT TIME DELAY
..MORE DELAY
..NEXT BIT
.BR IF INPUT W AS ZERO
..CONTINUE
..OUTPUT STOP BIT
. . I F D=0, CHAR.1 IS A NULL
..CHECK ENTRY
..ENTERED VIA READ
. .CHECK FOR ASCII HEX
..CHECK FOR ASCII DECIMAL
..A THRU F
. .NO
..SUBTRACT NET 37
..SAVE TEMPORARILY
..S H IF T DATA INTO ASL
. . SHL 4X
..SE T DF = 1
LINE-FEEDS
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