BYTE, WORD, and LONG INSTRUCTIONS
ADDx2 |
add,sum |
sum |
← |
sum + add |
ADD |
ADDx3 |
add1,add2,sum |
sum |
← |
add1 + add2 |
ADD |
SUBx2 |
sub,dif |
dif |
← |
dif - sub |
SUBtract |
SUBx3 |
sub,min,dif |
dif |
← |
min - sub |
SUBtract |
MULx2 |
mulr,prd |
prd |
← |
prd * mulr |
MULtipiу |
MULx3 |
mulr,muld,prd |
prd |
← |
muld * mulr |
MULtiply |
DIVx2 |
divd,quo |
quo |
← |
quo / divd |
DIVide |
DIVx3 |
divr,divd,quo |
quo |
← |
divd / divr |
DIVide |
BICx2 |
mask,dst |
dst |
← |
~dst AND mask |
BIt Clear |
BICx3 |
mask,src,dst |
dst |
← |
~src AND mask |
BIt Clear |
BISx2 |
mask,dst |
dst |
← |
dst OR mask |
BIt Set (OR) |
BISx3 |
mask,src,dst |
dst |
← |
src OR mask |
BIt Set (OR) |
XORx2 |
mask,dst |
dst |
← |
dst EXOR mask |
eXclusive OR |
XORx3 |
mask,src,dst |
dst |
← |
src EXOR mask |
eXclusive OR |
|
Byte-2 |
Byte-3 |
Word-2 |
Word-3 |
Long-2 |
Long-3 |
N |
Z |
V |
C |
ADD |
ADDB2 |
ADDB3 |
ADDW2 |
ADDW3 |
ADDL2 |
ADDL3 |
* |
* |
* |
* |
SUB |
SUBB2 |
SUBB3 |
SUBW2 |
SUBW3 |
SUBL2 |
SUBL3 |
* |
* |
* |
* |
MUL |
MULB2 |
MULB3 |
MULW2 |
MULW3 |
MULL2 |
MULL3 |
* |
* |
* |
0 |
DIV |
DIVB2 |
DIVB3 |
DIVW2 |
DIVW3 |
DIVL2 |
DIVL3 |
* |
* |
* |
0 |
BIC |
BICB2 |
BICB3 |
BICW2 |
BICW3 |
BICL2 |
BICL3 |
* |
* |
0 |
- |
BIS |
ВISB2 |
BISB3 |
BISW2 |
BISW3 |
BISL2 |
BISL3 |
* |
* |
0 |
- |
XOR |
XORB2 |
XORB3 |
XORW2 |
XORW3 |
XORL2 |
XORL3 |
* |
* |
0 |
- |
MOVx |
src,dst |
dst |
← |
src |
MOVe |
MNEGx |
src,dst |
dst |
← |
-src |
Move NEGative |
MCOMx |
src,dst |
dst |
← |
~src |
Move COMplement |
MOVAx |
src,dst |
dst |
← |
ADR(src) |
MOVe Address |
BITx |
mask,src |
tmp |
← |
~src AND mask |
BIt Test (AND) |
CMPx |
src1,src2 |
tmp |
← |
src1 - src2 |
CoMPare |
MOVZBx |
src,dst |
dst |
← |
ZEROS ! src |
Zero extend Byte |
MOVZWx |
src,dst |
dst |
← |
ZEROS ! src |
Zero extend Word |
|
Byte |
Word |
Long |
N |
Z |
V |
C |
|
MOVx |
MOVB |
MOVW |
MOVL |
* |
* |
0 |
- |
|
MNEGx |
MNEGB |
MNEGW |
MNEGL |
* |
* |
* |
* |
* reflects result |
MCOMx |
MCOMB |
MCOMW |
MCOML |
* |
* |
0 |
- |
|
MOVAx |
MOVAB |
MOVAW |
MOVAL |
* |
* |
0 |
- |
- unchanged |
BITx |
BITB |
BITW |
BITL |
* |
* |
0 |
- |
|
CMPx |
CMPB |
CMPW |
CMPL |
* |
* |
0 |
- |
0 cleared to zero |
MOVZBx |
|
MOVZBW |
MOVZBL |
0 |
* |
0 |
- |
|
MOVZWx |
|
|
MOVZWL |
0 |
* |
0 |
- |
1 set to one |
INCx |
dst |
dst |
← |
dst + 1 |
INCrement |
DECx |
dst |
dst |
← |
dst - 1 |
DECrement |
CLRx |
dst |
dst |
← |
0 |
CLeaR |
TSTx |
src |
tmp |
← |
src |
TeST (set N, Z, V, C) |
PUSHAx |
src |
MOVAx src,-(SP) |
PUSH Address on stack |
|
Byte |
Word |
Long |
N |
Z |
V |
C |
INCx |
INCB |
INCW |
INCL |
* |
* |
* |
* |
DECx |
DECB |
DECW |
DECL |
* |
* |
* |
* |
CLRx |
CLRB |
CLRW |
CLRL |
0 |
1 |
0 |
- |
TSTx |
TSTB |
TSTW |
TSTL |
* |
* |
0 |
0 |
PUSHAx |
PUSHAB |
PUSHAW |
PUSHAL |
* |
* |
0 |
- |
ACBB |
|
index ← index + add, branch |
ACBW |
limit,add,index,disp |
if add GEQ 0 and index LEQ limit |
ACBL |
|
or add LSS 0 and index GEQ limit |
FLOATING POINT INSTRUCTIONS
|
F_flt |
D_flt |
G_flt |
H_flt |
exponent bits |
8 |
8 |
11 |
15 |
fraction bits |
23 |
55 |
52 |
112 |
total bits |
32 |
64 |
64 |
128 |
ADDx2 |
add,sum |
sum |
← |
sum + add |
ADD |
АDDх3 |
add1,add2,sum |
sum |
← |
add1 + add2 |
ADD |
SUBx2 |
sub,dif |
dif |
← |
dif - sub |
SUBtract |
SUBx3 |
sub,min,dif |
dif |
← |
min - sub |
SUBtract |
MULx2 |
mulr,prd |
prd |
← |
prd * mulr |
MULtiply |
MULx3 |
mulr,muld,prd |
prd |
← |
muld * mulr |
MULtiply |
DIVx2 |
divd,quo |
quo |
← |
quo / divd |
DIVide |
DIVx3 |
divr,divd,quo |
quo |
← |
divd / divr |
DIVide |
|
F_flt |
D_flt |
G_flt |
H_flt |
N |
Z |
V |
C |
ADDx2 |
ADDF2 |
ADDD2 |
ADDG2 |
ADDH2 |
* |
* |
* |
0 |
ADDx3 |
ADDF3 |
ADDD3 |
ADDG3 |
ADDH3 |
* |
* |
* |
0 |
SUBx2 |
SUBF2 |
SUBD2 |
SUBG2 |
SUBH2 |
* |
* |
* |
0 |
SUBx3 |
SUBF3 |
SUBD3 |
SUBG3 |
SUBH3 |
* |
* |
* |
0 |
MULx2 |
MULF2 |
MULD2 |
MULG2 |
MULH2 |
* |
* |
* |
0 |
MULx3 |
MULF3 |
MULD3 |
MULG3 |
MULH3 |
* |
* |
* |
0 |
DIVx2 |
DIVF2 |
DIVD2 |
DIVG2 |
DIVH2 |
* |
* |
* |
0 |
DIVx3 |
DIVF3 |
DIVD3 |
DIVG3 |
DIVH3 |
* |
* |
* |
0 |
MOVx |
src,dst |
dst |
← |
src |
MOVe |
MOVAx |
src,dst |
dst |
← |
adr(src) |
MOVe Address |
MNEGx |
src,dst |
dst |
← |
-src |
Move NEGative |
CMPx |
src1,src2 |
tmp |
← |
src2 - src1 |
CoMPare |
|
F_flt |
D_flt |
G_flt |
H_flt |
N |
Z |
V |
C |
MOVx |
MOVF |
MOVD |
MOVG |
MOVH |
* |
* |
0 |
- |
MOVAx |
MOVAF |
MOVAD |
MOVAG |
MOVAH |
* |
* |
0 |
- |
MNEGx |
MNEGF |
MNEGD |
MNEGG |
MNEGH |
* |
* |
0 |
0 |
CMPx |
CMPF |
CMPD |
CMPG |
CMPH |
* |
* |
0 |
0 |
CLRx |
dst |
dst |
← |
0 |
CLeaR |
TSTx |
src |
tmp |
← |
src |
TeST (set N, Z, V, C) |
PUSHAx |
src |
MOVAx src,-(SP) |
PUSH Address on stack |
|
F_flt |
D_flt |
G_flt |
H_flt |
N |
Z |
V |
C |
CLRx |
CLRF |
CLRD |
CLRG |
CLRH |
0 |
1 |
0 |
- |
TSTx |
TSTF |
TSTD |
TSTG |
TSTH |
* |
* |
0 |
0 |
PUSHAx |
PUSHAF |
PUSHAD |
PUSHAG |
PUSHAH |
* |
* |
0 |
- |
ACBF |
|
index ← index + add, branch |
ACBD |
limit,add,index,disp |
if add GEQ 0 and index LEQ limit |
ACBG |
|
or add LSS 0 and index GEQ limit |
ACBH |
|
|
EMODx |
mulr,add,index,disp |
Extend MODulus (multiply) |
POLYx |
arg,degree,tbladr |
evaluate POLYnomial |
BRANCH, JUMP, CALL, and CASE INSTRUCTIONS
(Unless noted otherwise, operand is one byte displacement)
Signed Branch |
Unsigned Branch |
|
BEQL |
BEQLU |
Branch if EQual |
BNEQ |
BNEQU |
Branch if Not EQual |
BLSS |
BLSSU |
Branch if LeSS |
BGTR |
BGTRU |
Branch if GreaTeR |
BLEQ |
BLEQU |
Branch if Less or EQual |
BGEQ |
BGEQU |
Branch if Greater or EQual |
BNEQ |
Branch if Z Clear (result Not EQual to zero) |
BEQL |
Branch if Z Set (result EQuaL to zero) |
BCC |
Branch if C Clear (no unsigned overflow) |
BCS |
Branch if C Set (signed overflow) |
BVC |
Branch if V Clear (no signed overflow) |
BVS |
Branch if V Set (signed overflow) |
BGEQ |
Branch if N Clear (result is not negative) |
BLSS |
Branch if N Set (result is negative) |
BRB |
disp |
BRanch with Byte displacement |
BRW |
disp |
BRanch with Word displacement |
JMP |
adr |
JuMP (general operand specifier) |
BSBB |
disp |
Branch to SuBroutine with Byte displacement |
BSBW |
disp |
Branch to SuBroutine with Word displacement |
JSB |
adr |
Jump to SuBroutine (general operand specifier) |
RSB |
|
Return from SuBroutine (no operand) |
CALLG |
arglist,dst |
CALL procedure with General arg list |
CALLS |
numarg,dst |
CALL procedure with arguments on Stack |
RET |
|
RETurn from procedure |
|
|
index ← index + add, branch |
АСВx |
limit,add,index,disp |
if add GEQ 0 and index LEQ limit |
|
|
or add LSS 0 and index GEQ limit |
|
Byte |
Word |
Long |
F_flt |
D_flt |
G_flt |
H_flt |
|
ACBB |
ACBW |
ACBL |
ACBF |
ACBD |
ACBG |
ACBH |
AOBLSS |
lim,index,disp |
index = index + 1, BR if index LSS lim |
AOBLEQ |
lim,index,disp |
index = index + 1, BR if index LEQ lim |
SOBGTR |
index,disp |
index = index - 1, BR if index GTR 0 |
SOBGEQ |
index,disp |
index = index – 1, BR if index GEQ 0 |
BLBC |
src,disp |
branch if low bit (bit 0) clear |
BLBS |
src,disp |
branch if low bit (bit 0) set |
CASEB |
str,index,lim,disp[0], |
tmp ← index - str |
CASEW |
disp[1], |
if tmp LEQU lim, BR disp[tmp] |
CASEL |
disp[lim] |
else no branch |
BIT STRING BRANCH INSTRUCTIONS - see Bit String Instructions
LONGWORD (but not byte or word) INSTRUCTIONS
ADWC |
add,sum |
sum |
← | sum + add + C |
ADd With Carry |
SBWC |
sub,dif |
dif |
← | dif - sub - C |
SuBtract With Carry |
ASHL |
cnt,src,dst |
dst |
← | src * 2**cnt |
Arithmetic SHift Long |
ROTL |
cnt,src,dst |
dst |
← | ROTATE(src) |
ROTate Long cnt bits |
PUSHL |
src |
-(SP) |
← | src |
PUSH Long |
INDEX |
sub,low,high,size,indexin,indexout |
see COMPUTE INDEX |
QUADWORD AND OCTAWORD INSTRUCTIONS
ASHQ |
cnt,src,dst |
dst | ← | src * 2**cnt |
Arithmetic SHift |
CLRQ |
dst |
dst | ← | 0 |
CLeaR |
CLRO |
dst |
dst | ← | 0 |
CLeaR |
MOVQ |
src,dst |
dst | ← | src |
MOVe |
MOVO |
src,dst |
dst | ← | src |
MOVe |
MOVAQ |
src,dst |
dst | ← | ADR(src) |
MOVe Address |
MOVAO |
src,dst |
dst | ← | ADR(src) |
MOVe Address |
PUSHAQ |
src |
-(SP) | ← | ADR(src) |
PUSH Address |
PUSHAO |
src |
-(SP) | ← | ADR(src) |
PUSH Address |
EMUL |
mulr,muld,add,prod |
Extended MULtiply (see Ch 6.3) |
EDIV |
divr,divd,quo,rem |
Extended DIVide (see Ch 6.3) |
COMPUTE INDEX
INDEX |
sub,low,high,size,indexin,indexout (see Chapter 7.6) |
|
indexout ← (indexin + sub*size) |
|
if indexout LSS low or indexout GTR high, trap |
SIGNED CONVERT INSTRUCTIONS excluding Packed (N=Z=V=*,C=0)
CVTxy |
src,dst |
dst |
← |
src |
ConVerT src (type x) |
to |
Byte |
Word |
Long |
F_flt |
D_flt |
G_flt |
H_flt |
from |
|
|
|
|
|
|
|
Byte |
|
CVTBW |
CVTBL |
CVTBF |
CVTBD |
CVTBG |
CVTBH |
Word |
CVTWB |
|
CVTWL |
CVTWF |
CVTWD |
CVTWG |
CVTWH |
Long |
CVTLB |
CVTLW |
|
CVTLF |
CVTLD |
CVTLG |
CVTLH |
F_flt |
CVTFB |
CVTFW |
CVTFL |
|
CVTFD |
CVTFG |
CVTFH |
D_flt |
CVTDB |
CVTDW |
CVTDL |
CVTDF |
|
|
CVTDH |
G_flt |
CVTGB |
CVTGW |
CVTGL |
CVTGF |
|
|
CVTGH |
H_flt |
CVTHB |
CVTHW |
CVTHL |
CVTHF |
CVTHD |
CVTHG |
|
PACKED CONVERT INSTRUCTIONS (N=Z=V=*,C=0)
to |
Packed |
Long |
Leading |
Trailing |
from |
|
|
|
|
Packed |
|
CVTPL |
CVTPS |
CVTPT |
Long |
CVTLP |
|
|
|
Leading |
CVTSP |
|
|
|
Trailing |
CVTTP |
|
|
|
OTHER CONVERSIONS
|
|
CHARACTER STRING INSTRUCTIONS (See Section 13.2)
A character string (str) is specified by a starting address (adr) and a 16-bit word that specifies the length in bytes (len)
CMPC3 |
len,adr1,adr2 |
CoMPare Characters |
CMPC5 |
len1,adr1,fill,len2,adr2 |
CoMPare Characters, (pad shorter with fill) |
MOVC3 |
len,adr1,adr2 |
MOVe Characters |
MOVC5 |
len1,adr1,fill,len2,adr2 |
MOVe Characters, pad str1 if necessary |
MOVTC |
len1,adr1,table,len2,adr2 |
MOVe Translated Characters (using 256 byte table) |
MOVTUC |
len1,adr1,byte,table,len2,adr2 |
MOVe Trans. Until Char. stop if table(chr) EQ byte |
LOCC |
byte,len,adr |
LOCate first Character in str equal to byte |
SKPC |
byte,len,adr |
SKiP Characters in str equal to byte |
SCANC |
len,adr,table,mask |
SCAN Char, (find chr where mask AND table(chr) NE 0) |
SPANC |
len,adr,table,mask |
SPAN Char, (find chr where mask AND table(chr) EQ 0) |
MATCHC |
len1,adr1,len2,adr2 |
MATCH Characters (find first occurance of str2 in str1) |
RACKED DECIMAL INSTRUCTIONS (See Section 13.3)
A decimal string (str) is specified by a starting address (adr) and a length (len) which is the number of decimal digits in the string. Packed decimal instructions use R0 through R3 or R0 through R5.
MOVP |
len,adr1,adr2 |
str2 ← str1 |
MOVe |
CMPP3 |
len,adr1,adr2 |
tmp ← str1 - str2 |
CoMPare |
CMPP4 |
len1,adr1,len2,adr2 |
tmp ← str1 - str2 |
CoMPare |
ADDP4 |
len1,adr1,len2,adr2 |
str2 ← str2 + str1 |
ADD |
SUBP4 |
len1,adr1,len2,adr2 |
str2 ← str2 - str1 |
SUBtract |
ADDP6 |
len1,adr1,len2,adr2,len3,adr3 |
str3 ← str2 * str1 |
SUBP6 |
len1,adr1,len2,adr2,len3,adr3 |
str3 ← str2 - str1 |
MULP |
len1,adr1,len2,adr2,len3,adr3 |
str3 ← str2 * str1 |
DIVP |
len1,adr1,len2,adr2,len3,adr3 |
str3 ← str2 / str1 |
ASHP |
cnt,len1,adr1,rnd,len2,adr2 |
str2 ← str1 * 10**cnt |
CVTPL |
len1,adr1,long |
long ← str1 |
CVT Packed to Long |
CVTLP |
long,len1,adr1 |
str1 ← long |
CVT Long to Packed |
CVTPT |
len1,adr1,tbl,len2,adr2 |
str2 ← str1 |
CVT Packed to T or |
CVTPS |
len1,adr1,1en2,adr2 |
str2 ← str1 |
|
CVTTP |
len1,adr1,tbl,len2,adr2 |
str2 ← str1 |
CVT T or S numeric |
CVTSP |
len1,adr1,len2,adr2 |
str2 ← str1 |
QUEUE INSTRUCTIONS (see Section 13.9)
INSQUE |
entry,head |
INSert at head of absolute QUEue |
INSQUE |
entry,@head+4 |
INSert at tail of absolute QUEue |
REMQUE |
entry,head |
REMove at head of absolute QUEue |
REMQUE |
entry,@head+4 |
REMove at tail of absolute QUEue |
INSQHI |
entry,head |
INSert into rel. Queue at Head Interlocked |
INSQTI |
entry,head |
INSert into rel. Queue at Tail Interlocked |
REMQHI |
entry,head |
REMove from rel. Queue at Head Interlocked |
REMQTI |
entry,head |
REMove from rel. Queue at Tail Interlocked |
EDIT INSTRUCTIONS (see Section 13.4)
EDIT |
len1,adr1,pattern,adr2 |
str2 ← EDITED(str1) |
|
|
str1 is packed decimal |
EDIT PATTERN OPERATORS
Load fill and sign buffers
EO$LOAD_FILL |
char |
load the fill register (usually #^A" ") |
EO$LOAD_SIGN |
char |
unconditionally load sign register |
EO$LOAD_PLUS |
char |
load sign if str1 GTR 0 (#^A" " or #^A"+") |
EO$LOAD_MINUS |
char |
load sign if str1 LSS 0 (#^A"-") |
Output regardless of significance
EO$STORE_SIGN |
|
output the sign character |
EO$FILL |
cnt |
output cnt fill characters (cnt < 16) |
Change significance (significance set by non-zero digit in str1)
EO$SET_SIGNIF |
set significance |
EO$CLEAR_SIGNIF |
clear significance |
Output digit or character (or fill if significance clear)
EO$INSERT |
char |
insert character (or fill) |
EO$MOVE |
cnt |
copy digits from str1 to str2 (cnt < 16) |
Float sign over insignificant digits (until significance set)
EO$FLOAT |
cnt |
EO$INSERT, but output sign on significance |
EO$END_FLOAT |
|
EO$STORE_SIGN if significance not yet set |
Miscellaneous (see VAX Architecture Handbook)
EO$BLANK_ZERO |
cnt |
Store fill in prev. cnt bytes if str1 EQ 0 |
EO$REPLACE_SIGN |
cnt |
Store fill in byte (.-cnt) if str1 EQ 0. |
EO$ADJUST_INPUT |
cnt |
Fudge str1 to length cnt (add or del zeros) |
EO$END |
|
MUST terminate string of pattern operators |
BIT FIELD INSTRUCTIONS
OPERANDS
The offset (off) is a longword and the length (len) is a byte. Z in the operation code implies Zero extend (unsigned field).
FFC |
off,len,adr,long |
Find First Clear bit (long gets offset) |
FFS |
off,len,adr,long |
Find First Set bit (long gets offset) |
EXTV |
off,len,adr long |
long ← field |
EXTract field |
EXTZV |
off,len,adr,long |
long ← field |
EXTract field |
INSV |
long,off,len,adr |
field ← long |
INSert field |
CMPV |
off,len,adr,long |
tmp ← field - long |
CoMPare field |
CMPZV |
off,len,adr,long |
tmp ← field - long |
CoMPare field |
STACK OPERATIONS
POPR |
word |
POP Registers (word is a 16-bit register mask) |
PUSHR |
word |
PUSH Registers (word is a 16 bit register mask) |
PUSHL |
long |
PUSH Longword |
PUSHAx |
oper |
PUSH Address of oper (x = Byte, Word, Long, Quad, Octa, F_flt, D_flt, G_flt, or H_flt) |
PROCESSOR STATUS INSTRUCTIONS
PROCESSOR STATUS LONGWORD
a. decimal overflow trap bit
b. floating underflow trap bit
c. integer overflow trap bit
d. trace trap bit
BICPSW |
mask |
BIC mask,PSW |
Bit Clear, Processor Status Word |
BISPSW |
mask |
BIS mask,PSW |
Bit Set, Processor Status Word |
MOVPSL |
dst |
dst ← PSL |
MOVw Processor Status Longword |
SYSTEM AND MISCELLANEOUS INSTRUCTIONS
(see Chapter 14 and VAX Architecture Handbook)
ADAWI |
add,sum |
ADd Aligned Word Interlocked |
BBCCI |
off,adr,disp |
Branch - Bit Clear and Clear Interlocked |
BBSSI |
off,adr,disp |
Branch - Bit Set and Set Interlocked |
BPT |
|
Break Point faulT (for debugging) |
BUGx |
|
BUGcheck (x = Word or Long) |
CHMx |
param |
CHange Mode (x = Kernel, Executive, Supervisor, or User) |
ESCx |
|
ESCape (x = D, E, or F) |
HALT |
|
HALT processor |
LDPCTX |
|
LoaD Process ConTeXt |
MFPR |
src,reg |
Move From special Processor Register |
MTPR |
reg,dst |
Move To special Processor Register |
NOP |
|
No OPeration |
PROBER |
mode,len,base |
PROBE Read accessibility in mode |
PROBEW |
mode,len,base |
PROBE Write accessibility in mode |
REI |
|
Return from Exception or Interrupt |
SVPCTX |
|
SaVe Process ConTeXt |
XFC |
|
Extended Function Call |
POWERS OF 2 and 16
16n |
n |
2n |
---|---|---|
1 |
0 |
1 |
16 |
1 |
2 |
256 |
2 |
4 |
4,096 |
3 |
8 |
65,536 |
4 |
16 |
1,048,576 |
5 |
32 |
16,777,216 |
6 |
64 |
268,435,456 |
7 |
128 |
4,294,967,296 |
8 |
256 |
68,719,476,736 |
9 |
512 |
1,099,511,627,776 |
10 |
1,024 |
17,592,186,044,416 |
11 |
2,048 |
281,474,976,710,656 |
12 |
4,096 |
4,503,599,627,370,496 |
13 |
8,192 |
72,057,594,037,927,936 |
14 |
16,384 |
1,152,921,504,606,846,976 |
15 |
32,768 |
18,446,744,073,709,551,616 |
16 |
65,536 |
ADDRESSING MODES SELECTED BY THE ASSEMBLER
Name |
Assembler |
Description |
---|---|---|
immediate |
#constant |
literal or immediate |
displacement |
DISP(Rx) |
byte, word, or long displacement |
disp. deferred |
@DISP(Rx) |
byte, word, or lung displacement deferred |
relative |
address |
byte, word, or long relative addressing |
rel. deferred |
@address |
byte, word, or long relative deferred |
7-BIT ASCII CODE
Hex |
ASCII |
Hex |
ASCII |
Hex |
ASCII |
Hex |
ASCII |
---|---|---|---|---|---|---|---|
00 |
NUL |
20 |
SP |
40 |
@ |
60 |
` |
01 |
SOH |
21 |
! |
41 |
А |
61 |
а |
02 |
STX |
22 |
" |
42 |
В |
62 |
b |
03 |
ЕТХ |
23 |
# |
43 |
С |
63 |
с |
04 |
EOT |
24 |
$ |
44 |
D |
64 |
d |
05 |
ENQ |
25 |
% |
45 |
Е |
65 |
е |
06 |
АСК |
26 |
& |
46 |
F |
66 |
f |
07 |
BEL |
27 |
' |
47 |
G |
67 |
g |
08 |
BS |
28 |
( |
48 |
Н |
68 |
h |
09 |
HT |
29 |
) |
49 |
I |
69 |
i |
0А |
LF |
2A |
* |
4А |
J |
6А |
j |
0В |
VT |
2B |
+ |
4В |
К |
6В |
k |
0С |
FF |
2C |
, |
4С |
L |
6С |
l |
0D |
CR |
2D |
- |
4D |
М |
6D |
m |
0Е |
SO |
2E |
. |
4Е |
N |
6Е |
n |
0F |
SI |
2F |
/ |
4F |
О |
6F |
o |
10 |
DLE |
30 |
0 |
50 |
Р |
70 |
p |
11 |
DC1 |
31 |
1 |
51 |
Q |
71 |
q |
12 |
DC2 |
32 |
2 |
52 |
R |
72 |
r |
13 |
DC3 |
33 |
3 |
53 |
S |
73 |
s |
14 |
DC4 |
34 |
4 |
54 |
Т |
74 |
t |
15 |
NAK |
35 |
5 |
55 |
U |
75 |
u |
16 |
SYN |
36 |
6 |
56 |
V |
76 |
v |
17 |
ETB |
37 |
7 |
57 |
W |
77 |
w |
18 |
CAN |
38 |
8 |
58 |
X |
78 |
x |
19 |
EM |
39 |
9 |
59 |
Y |
79 |
y |
1А |
SUB |
3A |
: |
5А |
Z |
7А |
z |
1В |
ESC |
3B |
; |
5В |
[ |
7В |
{ |
1C |
FS |
3C |
< |
5С |
\ |
7С |
| |
1D |
GS |
3D |
= |
5D |
] |
7D |
} |
1Е |
RS |
3E |
> |
5Е |
^ |
7Е |
~ |
1F |
US |
3F |
? |
5F |
_ |
7F |
DEL |
GENERAL ADDRESSING MODES
(Rx is a general register R0 to R15)
(In descriptions, (Rx) means the contents of register Rx)
Hex |
Dec |
Name |
Assembler |
Description |
---|---|---|---|---|
0-3 |
0-3 |
literal |
S^#literal |
literal is operand |
4 |
4 |
indexed |
mode[Rx] |
adr(mode)+n*(Rx) is adr |
5 |
5 |
register |
Rx |
(Rx) is operand |
6 |
6 |
reg deferred |
(Rx) |
(Rx) is address of oper |
7 |
7 |
autodecrement |
-(Rx) |
dec Rx, Rx contains adr |
8 |
8 |
autoincrement |
(Rx)+ |
Rx contains adr, inc Rx |
9 |
9 |
autoinc. def. |
@(Rx)+ |
Rx contains adr of adr |
A |
10 |
byte disp. |
B^DISP(Rx) |
DISP+(Rx) is adr |
B |
11 |
byte disp. def. |
@B^DISP(Rx) |
DISP+(Rx) is adr of adr |
C |
12 |
word disp. |
W^DISP(Rx) |
DISP+(Rx) is adr |
D |
13 |
word disp. def. |
@W^DISP(Rx) |
DISP+(Rx) is adr of adr |
E |
14 |
long disp. |
L^DISP(Rx) |
DISP+(Rx) is adr |
F |
15 |
long disp. def. |
@L^DISP(Rx) |
DISP+(Rx) is adr of adr |
PROGRAM COUNTER ADDRESSING MODES (Rx is PC or Register 15)
Hex |
Dec |
Name |
Assembler |
Description |
---|---|---|---|---|
8 |
8 |
immediate |
I^#constant |
constant is operand |
9 |
9 |
absolute |
@#address |
address is adr of oper |
A |
10 |
byte relative |
B^address |
address is adr of oper |
B |
11 |
byte rel. def. |
@B^address |
address is adr of adr |
C |
12 |
word relative |
W^address |
address is adr of oper |
D |
13 |
word rel. def. |
@W^address |
address is adr of adr |
E |
14 |
long relative |
L^address |
address is adr of oper |
F |
15 |
long rel. def. |
@L^address |
address is adr of adr |
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