Home » Archimedes archive » Acorn User » AU 1995-10.adf » !CHelp » CHelp/!StrongHlp/HelpData/Assembly
CHelp/!StrongHlp/HelpData/Assembly
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1995-10.adf » !CHelp |
| Filename: | CHelp/!StrongHlp/HelpData/Assembly |
| Read OK: | ✔ |
| File size: | 0C34 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
HELP( � ����, ��� � $ DIR$� � $ F���z % !Root L E������� cond F����{ � Op2 � E���7���n PC @ F����[ w Rd � F���$p � Rn @
F���tk � S �
F����8?A Shift DATA% Instructions :
#wrap off
#tab
ADC Add with Carry MUL Multiply
ADD Add MVN Move Negative
AND And ORR Inclusive OR
B Branch RSB Reverse Subtract
BIC Bit Clear RSC Reverse Subtract with Carry
CMN Compare Negative SBC Subtract with Carry
CMP Compare STM Store Multiple
EOR Exlusive OR STR Store Register
LDM Load Multiple SUB Subtract
LDR Load Register SWI Software Interrupt
MLA Multiply with Accumulate TEQ Test for Equality
MOV Move TST Test Masked
#tab
<Condition codes=>cond> <S suffix=>S> < Rd > < Rn > < Op2 > DATA� Condition codes
All instructions are conditionally executed. If the condition in the top four bits of the instruction is not met, then even illegal instructions will have no effect...
#wrap off; tab
Condition field Execute IF
#Line
0000 EQ : Z (equal)
0001 NE : ~Z (not equal)
0010 CS : C (unsigned higher or same)
0011 CC : ~C (unsigned lower)
0100 MI : N (negative)
0101 PL : ~N (positive or zero)
0110 VS : V (overflow)
0111 VC : ~V (no overflow)
1000 HI : C and ~Z (unsigned higher)
1001 LS : ~C or Z (unsigned lower or same)
1010 GE : N = V (signed higher or same)
1011 LT : N != V (signed lower)
1100 GT : ~Z and (N = V) (signed higher)
1101 LE : Z or (N != V) (signed lower or same)
1110 AL : 1 (always)
1111 NV : 0 (never)
#tab; wrap nojoin
( 1 is true, 0 is false, ~ is NOT )
Note: The NV code shouldn't be used anymore. If you want a no-op, you should use something like MOV R0,R0DATA� Op2
This can take several forms :
- Reg
- Reg <shift> #constant
- Reg <shift> Reg
(Note: This takes an extra clock cycle)
- #constant
( of the form Byte ROR n*2, n is 0..15 )DATAn R15
3 2 1
10987654321098765432109876543210
%NZCOIF....program.counter.....MM
00 = User mode
FIRQ Disable 01 = FIRQ mode
IRQ Disable 10 = IRQ mode
Overflow 11 = Supervisor mode
Carry / Not borrow / Rotate Extend
Zero
Negative / Signed less than DATAw Rd
Rd can be any of the registers from R0 to R15. If Rd = R15 then only the PC bits will be set, not the flags. DATA� Rn
Rn can be any of the registers from R0 to R15. If Rn = R15 then only the PC bits are used. The flag bits will appear cleared.DATA� S
Flags will only be updated if this is present. The S flag is implicit in CMP, CMN, TEQ and TST
SUBS R1,R1,R2 ;
ADD R1,R1,R3 ;
Beq xxx ; jump if R1-R2 = 0DATAA Shift
The shift types are :
LSL Logical Shift Left
LSR Logical Shift Right
ASR Arithmetic Shift Right
ROR ROtate Right
RRX Rotate Right eXtended
RRX is special. It is a rotate by one, where bit 31 = old carry and new carry = old bit 0.
For all shifts the carry flag is set to the last bit shifted out. 00000000 48 45 4c 50 28 00 00 00 c9 00 00 00 ff ff ff ff |HELP(...........|
00000010 2c 00 00 00 00 fd ff ff 00 00 00 00 f0 00 00 00 |,...............|
00000020 00 01 00 00 00 00 00 00 24 00 00 00 44 49 52 24 |........$...DIR$|
00000030 f8 00 00 00 f8 00 00 00 24 01 00 00 46 fd ff ff |........$...F...|
00000040 7a 03 09 00 25 02 00 00 13 00 00 00 00 00 00 00 |z...%...........|
00000050 21 52 6f 6f 74 00 00 00 4c 03 00 00 45 fd ff ff |!Root...L...E...|
00000060 f8 b3 dd ff c0 03 00 00 13 00 00 00 00 00 00 00 |................|
00000070 63 6f 6e 64 00 00 00 00 0c 07 00 00 46 fd ff ff |cond........F...|
00000080 85 7b 08 00 c4 00 00 00 13 00 00 00 00 00 00 00 |.{..............|
00000090 4f 70 32 00 d0 07 00 00 45 fd ff ff 37 9d e8 df |Op2.....E...7...|
000000a0 6e 01 00 00 13 00 00 00 00 00 00 00 50 43 00 00 |n...........PC..|
000000b0 40 09 00 00 46 fd ff ff b0 5b 08 00 77 00 00 00 |@...F....[..w...|
000000c0 13 00 00 00 00 00 00 00 52 64 00 00 b8 09 00 00 |........Rd......|
000000d0 46 fd ff ff 24 70 08 00 88 00 00 00 13 00 00 00 |F...$p..........|
000000e0 00 00 00 00 52 6e 00 00 40 0a 00 00 46 fd ff ff |....Rn..@...F...|
000000f0 74 6b 08 00 b0 00 00 00 13 00 00 00 00 00 00 00 |tk..............|
00000100 53 00 00 00 f0 0a 00 00 46 fd ff ff d1 38 3f 03 |S.......F....8?.|
00000110 41 01 00 00 13 00 00 00 00 00 00 00 53 68 69 66 |A...........Shif|
00000120 74 00 00 00 44 41 54 41 25 02 00 00 49 6e 73 74 |t...DATA%...Inst|
00000130 72 75 63 74 69 6f 6e 73 20 3a 0a 23 77 72 61 70 |ructions :.#wrap|
00000140 20 6f 66 66 0a 23 74 61 62 0a 41 44 43 09 41 64 | off.#tab.ADC.Ad|
00000150 64 20 77 69 74 68 20 43 61 72 72 79 09 09 4d 55 |d with Carry..MU|
00000160 4c 09 4d 75 6c 74 69 70 6c 79 0a 41 44 44 09 41 |L.Multiply.ADD.A|
00000170 64 64 09 09 09 4d 56 4e 09 4d 6f 76 65 20 4e 65 |dd...MVN.Move Ne|
00000180 67 61 74 69 76 65 0a 41 4e 44 09 41 6e 64 09 09 |gative.AND.And..|
00000190 09 4f 52 52 09 49 6e 63 6c 75 73 69 76 65 20 4f |.ORR.Inclusive O|
000001a0 52 0a 42 09 42 72 61 6e 63 68 09 09 09 52 53 42 |R.B.Branch...RSB|
000001b0 09 52 65 76 65 72 73 65 20 53 75 62 74 72 61 63 |.Reverse Subtrac|
000001c0 74 0a 42 49 43 09 42 69 74 20 43 6c 65 61 72 09 |t.BIC.Bit Clear.|
000001d0 09 52 53 43 09 52 65 76 65 72 73 65 20 53 75 62 |.RSC.Reverse Sub|
000001e0 74 72 61 63 74 20 77 69 74 68 20 43 61 72 72 79 |tract with Carry|
000001f0 0a 43 4d 4e 09 43 6f 6d 70 61 72 65 20 4e 65 67 |.CMN.Compare Neg|
00000200 61 74 69 76 65 09 53 42 43 09 53 75 62 74 72 61 |ative.SBC.Subtra|
00000210 63 74 20 77 69 74 68 20 43 61 72 72 79 0a 43 4d |ct with Carry.CM|
00000220 50 09 43 6f 6d 70 61 72 65 09 09 09 53 54 4d 09 |P.Compare...STM.|
00000230 53 74 6f 72 65 20 4d 75 6c 74 69 70 6c 65 0a 45 |Store Multiple.E|
00000240 4f 52 09 45 78 6c 75 73 69 76 65 20 4f 52 09 09 |OR.Exlusive OR..|
00000250 53 54 52 09 53 74 6f 72 65 20 52 65 67 69 73 74 |STR.Store Regist|
00000260 65 72 0a 4c 44 4d 09 4c 6f 61 64 20 4d 75 6c 74 |er.LDM.Load Mult|
00000270 69 70 6c 65 09 09 53 55 42 09 53 75 62 74 72 61 |iple..SUB.Subtra|
00000280 63 74 0a 4c 44 52 09 4c 6f 61 64 20 52 65 67 69 |ct.LDR.Load Regi|
00000290 73 74 65 72 09 09 53 57 49 09 53 6f 66 74 77 61 |ster..SWI.Softwa|
000002a0 72 65 20 49 6e 74 65 72 72 75 70 74 0a 4d 4c 41 |re Interrupt.MLA|
000002b0 09 4d 75 6c 74 69 70 6c 79 20 77 69 74 68 20 41 |.Multiply with A|
000002c0 63 63 75 6d 75 6c 61 74 65 09 54 45 51 09 54 65 |ccumulate.TEQ.Te|
000002d0 73 74 20 66 6f 72 20 45 71 75 61 6c 69 74 79 0a |st for Equality.|
000002e0 4d 4f 56 09 4d 6f 76 65 09 09 09 54 53 54 09 54 |MOV.Move...TST.T|
000002f0 65 73 74 20 4d 61 73 6b 65 64 0a 23 74 61 62 0a |est Masked.#tab.|
00000300 20 20 20 3c 43 6f 6e 64 69 74 69 6f 6e 20 63 6f | <Condition co|
00000310 64 65 73 3d 3e 63 6f 6e 64 3e 20 20 20 20 20 20 |des=>cond> |
00000320 3c 53 20 73 75 66 66 69 78 3d 3e 53 3e 20 20 20 |<S suffix=>S> |
00000330 20 20 3c 20 52 64 20 3e 20 20 3c 20 52 6e 20 3e | < Rd > < Rn >|
00000340 20 20 3c 20 4f 70 32 20 3e 00 00 00 44 41 54 41 | < Op2 >...DATA|
00000350 c0 03 00 00 43 6f 6e 64 69 74 69 6f 6e 20 63 6f |....Condition co|
00000360 64 65 73 0a 41 6c 6c 20 69 6e 73 74 72 75 63 74 |des.All instruct|
00000370 69 6f 6e 73 20 61 72 65 20 63 6f 6e 64 69 74 69 |ions are conditi|
00000380 6f 6e 61 6c 6c 79 20 65 78 65 63 75 74 65 64 2e |onally executed.|
00000390 20 49 66 20 74 68 65 20 63 6f 6e 64 69 74 69 6f | If the conditio|
000003a0 6e 20 69 6e 20 74 68 65 20 74 6f 70 20 66 6f 75 |n in the top fou|
000003b0 72 20 62 69 74 73 20 6f 66 20 74 68 65 20 69 6e |r bits of the in|
000003c0 73 74 72 75 63 74 69 6f 6e 20 69 73 20 6e 6f 74 |struction is not|
000003d0 20 6d 65 74 2c 20 74 68 65 6e 20 65 76 65 6e 20 | met, then even |
000003e0 69 6c 6c 65 67 61 6c 20 69 6e 73 74 72 75 63 74 |illegal instruct|
000003f0 69 6f 6e 73 20 77 69 6c 6c 20 68 61 76 65 20 6e |ions will have n|
00000400 6f 20 65 66 66 65 63 74 2e 2e 2e 0a 0a 23 77 72 |o effect.....#wr|
00000410 61 70 20 6f 66 66 3b 20 74 61 62 0a 43 6f 6e 64 |ap off; tab.Cond|
00000420 69 74 69 6f 6e 20 66 69 65 6c 64 09 20 09 20 09 |ition field. . .|
00000430 45 78 65 63 75 74 65 20 49 46 0a 23 4c 69 6e 65 |Execute IF.#Line|
00000440 0a 20 20 30 30 30 30 09 45 51 09 3a 09 20 5a 09 |. 0000.EQ.:. Z.|
00000450 09 28 65 71 75 61 6c 29 0a 20 20 30 30 30 31 09 |.(equal). 0001.|
00000460 4e 45 09 3a 09 7e 5a 09 09 28 6e 6f 74 20 65 71 |NE.:.~Z..(not eq|
00000470 75 61 6c 29 0a 20 20 30 30 31 30 09 43 53 09 3a |ual). 0010.CS.:|
00000480 09 20 43 09 09 28 75 6e 73 69 67 6e 65 64 20 68 |. C..(unsigned h|
00000490 69 67 68 65 72 20 6f 72 20 73 61 6d 65 29 0a 20 |igher or same). |
000004a0 20 30 30 31 31 09 43 43 09 3a 09 7e 43 09 09 28 | 0011.CC.:.~C..(|
000004b0 75 6e 73 69 67 6e 65 64 20 6c 6f 77 65 72 29 0a |unsigned lower).|
000004c0 20 20 30 31 30 30 09 4d 49 09 3a 09 20 4e 09 09 | 0100.MI.:. N..|
000004d0 28 6e 65 67 61 74 69 76 65 29 0a 20 20 30 31 30 |(negative). 010|
000004e0 31 09 50 4c 09 3a 09 7e 4e 09 09 28 70 6f 73 69 |1.PL.:.~N..(posi|
000004f0 74 69 76 65 20 6f 72 20 7a 65 72 6f 29 0a 20 20 |tive or zero). |
00000500 30 31 31 30 09 56 53 09 3a 09 20 56 09 09 28 6f |0110.VS.:. V..(o|
00000510 76 65 72 66 6c 6f 77 29 0a 20 20 30 31 31 31 09 |verflow). 0111.|
00000520 56 43 09 3a 09 7e 56 09 09 28 6e 6f 20 6f 76 65 |VC.:.~V..(no ove|
00000530 72 66 6c 6f 77 29 0a 20 20 31 30 30 30 09 48 49 |rflow). 1000.HI|
00000540 09 3a 09 20 43 20 61 6e 64 20 7e 5a 09 28 75 6e |.:. C and ~Z.(un|
00000550 73 69 67 6e 65 64 20 68 69 67 68 65 72 29 0a 20 |signed higher). |
00000560 20 31 30 30 31 09 4c 53 09 3a 09 7e 43 20 6f 72 | 1001.LS.:.~C or|
00000570 20 5a 09 09 28 75 6e 73 69 67 6e 65 64 20 6c 6f | Z..(unsigned lo|
00000580 77 65 72 20 6f 72 20 73 61 6d 65 29 0a 20 20 31 |wer or same). 1|
00000590 30 31 30 09 47 45 09 3a 09 20 4e 20 3d 20 56 09 |010.GE.:. N = V.|
000005a0 09 28 73 69 67 6e 65 64 20 68 69 67 68 65 72 20 |.(signed higher |
000005b0 6f 72 20 73 61 6d 65 29 0a 20 20 31 30 31 31 09 |or same). 1011.|
000005c0 4c 54 09 3a 09 20 4e 20 21 3d 20 56 09 09 28 73 |LT.:. N != V..(s|
000005d0 69 67 6e 65 64 20 6c 6f 77 65 72 29 0a 20 20 31 |igned lower). 1|
000005e0 31 30 30 09 47 54 09 3a 09 7e 5a 20 61 6e 64 20 |100.GT.:.~Z and |
000005f0 28 4e 20 3d 20 56 29 09 28 73 69 67 6e 65 64 20 |(N = V).(signed |
00000600 68 69 67 68 65 72 29 0a 20 20 31 31 30 31 09 4c |higher). 1101.L|
00000610 45 09 3a 09 20 5a 20 6f 72 20 28 4e 20 21 3d 20 |E.:. Z or (N != |
00000620 56 29 09 28 73 69 67 6e 65 64 20 6c 6f 77 65 72 |V).(signed lower|
00000630 20 6f 72 20 73 61 6d 65 29 0a 20 20 31 31 31 30 | or same). 1110|
00000640 09 41 4c 09 3a 09 20 31 09 09 28 61 6c 77 61 79 |.AL.:. 1..(alway|
00000650 73 29 0a 20 20 31 31 31 31 09 4e 56 09 3a 09 20 |s). 1111.NV.:. |
00000660 30 09 09 28 6e 65 76 65 72 29 0a 23 74 61 62 3b |0..(never).#tab;|
00000670 20 77 72 61 70 20 6e 6f 6a 6f 69 6e 0a 0a 28 20 | wrap nojoin..( |
00000680 31 20 69 73 20 74 72 75 65 2c 20 30 20 69 73 20 |1 is true, 0 is |
00000690 66 61 6c 73 65 2c 20 7e 20 69 73 20 4e 4f 54 20 |false, ~ is NOT |
000006a0 29 0a 0a 4e 6f 74 65 3a 20 54 68 65 20 4e 56 20 |)..Note: The NV |
000006b0 63 6f 64 65 20 73 68 6f 75 6c 64 6e 27 74 20 62 |code shouldn't b|
000006c0 65 20 75 73 65 64 20 61 6e 79 6d 6f 72 65 2e 20 |e used anymore. |
000006d0 49 66 20 79 6f 75 20 77 61 6e 74 20 61 20 6e 6f |If you want a no|
000006e0 2d 6f 70 2c 20 79 6f 75 20 73 68 6f 75 6c 64 20 |-op, you should |
000006f0 75 73 65 20 73 6f 6d 65 74 68 69 6e 67 20 6c 69 |use something li|
00000700 6b 65 20 4d 4f 56 20 52 30 2c 52 30 44 41 54 41 |ke MOV R0,R0DATA|
00000710 c4 00 00 00 4f 70 32 0a 54 68 69 73 20 63 61 6e |....Op2.This can|
00000720 20 74 61 6b 65 20 73 65 76 65 72 61 6c 20 66 6f | take several fo|
00000730 72 6d 73 20 3a 0a 20 20 20 2d 09 52 65 67 0a 20 |rms :. -.Reg. |
00000740 20 20 2d 09 52 65 67 20 3c 73 68 69 66 74 3e 20 | -.Reg <shift> |
00000750 23 63 6f 6e 73 74 61 6e 74 0a 20 20 20 2d 09 52 |#constant. -.R|
00000760 65 67 20 3c 73 68 69 66 74 3e 20 52 65 67 0a 09 |eg <shift> Reg..|
00000770 28 4e 6f 74 65 3a 20 54 68 69 73 20 74 61 6b 65 |(Note: This take|
00000780 73 20 61 6e 20 65 78 74 72 61 20 63 6c 6f 63 6b |s an extra clock|
00000790 20 63 79 63 6c 65 29 0a 20 20 20 2d 09 23 63 6f | cycle). -.#co|
000007a0 6e 73 74 61 6e 74 0a 09 28 20 6f 66 20 74 68 65 |nstant..( of the|
000007b0 20 66 6f 72 6d 20 42 79 74 65 20 52 4f 52 20 6e | form Byte ROR n|
000007c0 2a 32 2c 20 6e 20 69 73 20 30 2e 2e 31 35 20 29 |*2, n is 0..15 )|
000007d0 44 41 54 41 6e 01 00 00 52 31 35 0a 20 20 33 20 |DATAn...R15. 3 |
000007e0 20 20 20 20 20 20 20 20 32 20 20 20 20 20 20 20 | 2 |
000007f0 20 20 31 0a 20 31 30 39 38 37 36 35 34 33 32 31 | 1. 10987654321|
00000800 30 39 38 37 36 35 34 33 32 31 30 39 38 37 36 35 |0987654321098765|
00000810 34 33 32 31 30 0a 25 4e 5a 43 4f 49 46 2e 2e 2e |43210.%NZCOIF...|
00000820 2e 70 72 6f 67 72 61 6d 2e 63 6f 75 6e 74 65 72 |.program.counter|
00000830 2e 2e 2e 2e 2e 4d 4d 0a 20 20 20 20 20 20 20 20 |.....MM. |
00000840 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000850 20 20 20 20 20 20 20 30 30 20 3d 20 55 73 65 72 | 00 = User|
00000860 20 6d 6f 64 65 0a 20 20 20 20 20 20 46 49 52 51 | mode. FIRQ|
00000870 20 44 69 73 61 62 6c 65 20 20 20 20 20 20 20 20 | Disable |
00000880 20 20 20 20 20 30 31 20 3d 20 46 49 52 51 20 6d | 01 = FIRQ m|
00000890 6f 64 65 0a 20 20 20 20 20 49 52 51 20 44 69 73 |ode. IRQ Dis|
000008a0 61 62 6c 65 20 20 20 20 20 20 20 20 20 20 20 20 |able |
000008b0 20 20 20 31 30 20 3d 20 49 52 51 20 6d 6f 64 65 | 10 = IRQ mode|
000008c0 0a 20 20 20 20 4f 76 65 72 66 6c 6f 77 20 20 20 |. Overflow |
000008d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
000008e0 31 31 20 3d 20 53 75 70 65 72 76 69 73 6f 72 20 |11 = Supervisor |
000008f0 6d 6f 64 65 0a 20 20 20 43 61 72 72 79 20 2f 20 |mode. Carry / |
00000900 4e 6f 74 20 62 6f 72 72 6f 77 20 2f 20 52 6f 74 |Not borrow / Rot|
00000910 61 74 65 20 45 78 74 65 6e 64 0a 20 20 5a 65 72 |ate Extend. Zer|
00000920 6f 0a 20 4e 65 67 61 74 69 76 65 20 2f 20 53 69 |o. Negative / Si|
00000930 67 6e 65 64 20 6c 65 73 73 20 74 68 61 6e 00 00 |gned less than..|
00000940 44 41 54 41 77 00 00 00 52 64 0a 52 64 20 63 61 |DATAw...Rd.Rd ca|
00000950 6e 20 62 65 20 61 6e 79 20 6f 66 20 74 68 65 20 |n be any of the |
00000960 72 65 67 69 73 74 65 72 73 20 66 72 6f 6d 20 52 |registers from R|
00000970 30 20 74 6f 20 52 31 35 2e 20 49 66 20 52 64 20 |0 to R15. If Rd |
00000980 3d 20 52 31 35 20 74 68 65 6e 20 6f 6e 6c 79 20 |= R15 then only |
00000990 74 68 65 20 50 43 20 62 69 74 73 20 77 69 6c 6c |the PC bits will|
000009a0 20 62 65 20 73 65 74 2c 20 6e 6f 74 20 74 68 65 | be set, not the|
000009b0 20 66 6c 61 67 73 2e 00 44 41 54 41 88 00 00 00 | flags..DATA....|
000009c0 52 6e 0a 52 6e 20 63 61 6e 20 62 65 20 61 6e 79 |Rn.Rn can be any|
000009d0 20 6f 66 20 74 68 65 20 72 65 67 69 73 74 65 72 | of the register|
000009e0 73 20 66 72 6f 6d 20 52 30 20 74 6f 20 52 31 35 |s from R0 to R15|
000009f0 2e 20 49 66 20 52 6e 20 3d 20 52 31 35 20 74 68 |. If Rn = R15 th|
00000a00 65 6e 20 6f 6e 6c 79 20 74 68 65 20 50 43 20 62 |en only the PC b|
00000a10 69 74 73 20 61 72 65 20 75 73 65 64 2e 20 54 68 |its are used. Th|
00000a20 65 20 66 6c 61 67 20 62 69 74 73 20 77 69 6c 6c |e flag bits will|
00000a30 20 61 70 70 65 61 72 20 63 6c 65 61 72 65 64 2e | appear cleared.|
00000a40 44 41 54 41 b0 00 00 00 53 0a 46 6c 61 67 73 20 |DATA....S.Flags |
00000a50 77 69 6c 6c 20 6f 6e 6c 79 20 62 65 20 75 70 64 |will only be upd|
00000a60 61 74 65 64 20 69 66 20 74 68 69 73 20 69 73 20 |ated if this is |
00000a70 70 72 65 73 65 6e 74 2e 20 54 68 65 20 53 20 66 |present. The S f|
00000a80 6c 61 67 20 69 73 20 69 6d 70 6c 69 63 69 74 20 |lag is implicit |
00000a90 69 6e 20 43 4d 50 2c 20 43 4d 4e 2c 20 54 45 51 |in CMP, CMN, TEQ|
00000aa0 20 61 6e 64 20 54 53 54 0a 0a 20 20 53 55 42 53 | and TST.. SUBS|
00000ab0 20 52 31 2c 52 31 2c 52 32 09 09 3b 0a 20 20 41 | R1,R1,R2..;. A|
00000ac0 44 44 20 20 52 31 2c 52 31 2c 52 33 09 09 3b 20 |DD R1,R1,R3..; |
00000ad0 0a 20 20 42 65 71 20 20 78 78 78 09 09 3b 20 6a |. Beq xxx..; j|
00000ae0 75 6d 70 20 69 66 20 52 31 2d 52 32 20 3d 20 30 |ump if R1-R2 = 0|
00000af0 44 41 54 41 41 01 00 00 53 68 69 66 74 0a 54 68 |DATAA...Shift.Th|
00000b00 65 20 73 68 69 66 74 20 74 79 70 65 73 20 61 72 |e shift types ar|
00000b10 65 20 3a 0a 20 20 4c 53 4c 09 4c 6f 67 69 63 61 |e :. LSL.Logica|
00000b20 6c 20 53 68 69 66 74 20 4c 65 66 74 0a 20 20 4c |l Shift Left. L|
00000b30 53 52 09 4c 6f 67 69 63 61 6c 20 53 68 69 66 74 |SR.Logical Shift|
00000b40 20 52 69 67 68 74 0a 20 20 41 53 52 09 41 72 69 | Right. ASR.Ari|
00000b50 74 68 6d 65 74 69 63 20 53 68 69 66 74 20 52 69 |thmetic Shift Ri|
00000b60 67 68 74 0a 20 20 52 4f 52 09 52 4f 74 61 74 65 |ght. ROR.ROtate|
00000b70 20 52 69 67 68 74 0a 20 20 52 52 58 09 52 6f 74 | Right. RRX.Rot|
00000b80 61 74 65 20 52 69 67 68 74 20 65 58 74 65 6e 64 |ate Right eXtend|
00000b90 65 64 0a 0a 52 52 58 20 69 73 20 73 70 65 63 69 |ed..RRX is speci|
00000ba0 61 6c 2e 20 49 74 20 69 73 20 61 20 72 6f 74 61 |al. It is a rota|
00000bb0 74 65 20 62 79 20 6f 6e 65 2c 20 77 68 65 72 65 |te by one, where|
00000bc0 20 62 69 74 20 33 31 20 3d 20 6f 6c 64 20 63 61 | bit 31 = old ca|
00000bd0 72 72 79 20 61 6e 64 20 6e 65 77 20 63 61 72 72 |rry and new carr|
00000be0 79 20 3d 20 6f 6c 64 20 62 69 74 20 30 2e 0a 0a |y = old bit 0...|
00000bf0 46 6f 72 20 61 6c 6c 20 73 68 69 66 74 73 20 74 |For all shifts t|
00000c00 68 65 20 63 61 72 72 79 20 66 6c 61 67 20 69 73 |he carry flag is|
00000c10 20 73 65 74 20 74 6f 20 74 68 65 20 6c 61 73 74 | set to the last|
00000c20 20 62 69 74 20 73 68 69 66 74 65 64 20 6f 75 74 | bit shifted out|
00000c30 2e 00 00 00 |....|
00000c34 
.