mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-27 10:08:06 +11:00
avra: add TOC and instructions list
This commit is contained in:
parent
74e211eeda
commit
1ac7038863
17
blk/650
17
blk/650
@ -1,16 +1,5 @@
|
||||
AVR assembler
|
||||
|
||||
This assembler works very much like Z80 assembler (B200) so
|
||||
refer to this documentation first. Here, we document specifici-
|
||||
ties.
|
||||
|
||||
All mnemonics in AVR have a single signature. Therefore, we
|
||||
don't need any "argtype" suffixes.
|
||||
|
||||
Registers are referred to with consts R0-R31. There is
|
||||
X, Y, Z, X+, Y+, Z+, X-, Y-, Z- for appropriate ops (LD, ST).
|
||||
XL, XH, YL, YH, ZL, ZH are simple aliases to R26-R31.
|
||||
|
||||
Branching works differently. Instead of expecting a byte to be
|
||||
written after the naked op, branching words expect a displace-
|
||||
ment argument. (cont.)
|
||||
651 Guide 655 Instructions list
|
||||
660 Loader 661-672 Code
|
||||
672 Common AVR consts
|
||||
|
21
blk/651
21
blk/651
@ -1,9 +1,16 @@
|
||||
This is because there's bitwise ORing involved in the creation
|
||||
of the final opcode, which makes z80a's approach impractical.
|
||||
This assembler works very much like Z80 assembler (B200) so
|
||||
refer to this documentation first. Here, we document specifici-
|
||||
ties.
|
||||
|
||||
This makes labelling a bit different too. Instead of expecting
|
||||
label words after the naked branching op, we rather have label
|
||||
words expecting branching wordref as an argument. Examples:
|
||||
All mnemonics in AVR have a single signature. Therefore, we
|
||||
don't need any "argtype" suffixes.
|
||||
|
||||
L2 ' BRTS FLBL! ( branch forward to L2 )
|
||||
L1 ' RJMP LBL, ( branch backward to L1 )
|
||||
Registers are referred to with consts R0-R31. There is
|
||||
X, Y, Z, X+, Y+, Z+, X-, Y-, Z- for appropriate ops (LD, ST).
|
||||
XL, XH, YL, YH, ZL, ZH are simple aliases to R26-R31.
|
||||
|
||||
Branching works differently. Instead of expecting a byte to be
|
||||
written after the naked op, branching words expect a displace-
|
||||
ment argument.
|
||||
|
||||
(cont.)
|
||||
|
9
blk/652
Normal file
9
blk/652
Normal file
@ -0,0 +1,9 @@
|
||||
This is because there's bitwise ORing involved in the creation
|
||||
of the final opcode, which makes z80a's approach impractical.
|
||||
|
||||
This makes labelling a bit different too. Instead of expecting
|
||||
label words after the naked branching op, we rather have label
|
||||
words expecting branching wordref as an argument. Examples:
|
||||
|
||||
L2 ' BRTS FLBL! ( branch forward to L2 )
|
||||
L1 ' RJMP LBL, ( branch backward to L1 )
|
16
blk/655
Normal file
16
blk/655
Normal file
@ -0,0 +1,16 @@
|
||||
AVR instructions list
|
||||
|
||||
OPRd (B663)
|
||||
ASR COM DEC INC LAC LAS LAT LSR NEG POP PUSH
|
||||
ROR SWAP XCH
|
||||
|
||||
OPRdRr (B664)
|
||||
ADC ADD AND CP CPC CPSE EOR MOV MUL OR SBC
|
||||
SUB
|
||||
|
||||
OPRdA (B664)
|
||||
IN OUT
|
||||
|
||||
OPRdK (B665)
|
||||
ANDI CPI LDI ORI SBCI SBR SUBI
|
||||
(cont.)
|
16
blk/656
Normal file
16
blk/656
Normal file
@ -0,0 +1,16 @@
|
||||
OPAb (B665)
|
||||
CBI SBI SBIC SBIS
|
||||
|
||||
OPNA (B666)
|
||||
BREAK CL[C,H,I,N,S,T,V,Z] SE[C,H,I,N,S,T,V,Z] EIJMP ICALL
|
||||
EICALL IJMP NOP RET RETI SLEEP WDR
|
||||
|
||||
OPb (B667)
|
||||
BCLR BSET
|
||||
|
||||
OPRdb (B667)
|
||||
BLD BST SBRC SBRS
|
||||
|
||||
Special (B667,B670)
|
||||
CLR TST LSL LD ST
|
||||
(cont.)
|
Loading…
Reference in New Issue
Block a user