izaya/collapseos
1
0
Fork 0
mirror of https://github.com/hsoft/collapseos.git synced 2024-12-24 14:28:06 +11:00
Code Issues Releases Wiki Activity

zasm: add a bunch of primary instructions

Browse Source
This commit is contained in:
Virgil Dupras 2019-04-17 11:14:24 -04:00
parent a7dc1e7b4a
commit 3fe5eb3e60
1 changed files with 22 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
apps/zasm/zasm.asm
View File

@ -4,7 +4,7 @@
; Number of rows in the argspec table
ARGSPEC_TBL_CNT .equ 27
; Number of rows in the primary instructions table
INSTR_TBLP_CNT .equ 33
INSTR_TBLP_CNT .equ 50
; size in bytes of each row in the primary instructions table
INSTR_TBLP_ROWSIZE .equ 8
@ -237,12 +237,13 @@ findInGroup:
; regular group
push de
ld de, argGrpTbl
; group ids start at 1. decrease it, then multiply by two to have a
; group ids start at 1. decrease it, then multiply by 4 to have a
; proper offset in argGrpTbl
dec h
push af
ld a, h
add a, a
rla
rla
call JUMP_ADDDE ; At this point, DE points to our group
pop af
ex hl, de ; And now, HL points to the group
@ -474,6 +475,7 @@ argspecTbl:
argGrpTbl:
.db "bdha" ; 0x01
.db "Zz^=" ; 0x02
.db "bdhs" ; 0x03
argGrpCC:
.db "Zz^=+-12" ; 0xa
@ -490,12 +492,20 @@ argGrpABCDEHL:
; 1 byte for upcode
instrTBlPrimary:
.db "ADD", 0, 'A', 'h', 0, 0x86 ; ADD A, HL
.db "ADD", 0, 'A', 0xb, 0, 0b10000000 ; ADD A, r
.db "ADC", 0, 'A', 'h', 0, 0x8e ; ADC A, HL
.db "ADC", 0, 'A', 0xb, 0, 0b10001000 ; ADC A, r
.db "AND", 0, 'l', 0, 0, 0xa6 ; AND (HL)
.db "AND", 0, 0xa, 0, 0, 0b10100000 ; AND r
.db "CCF", 0, 0, 0, 0, 0x3f ; CCF
.db "CP",0,0, 'l', 0, 0, 0xbe ; CP (HL)
.db "CP",0,0, 0xb, 0, 0, 0b10111000 ; CP r
.db "CPL", 0, 0, 0, 0, 0x2f ; CPL
.db "DAA", 0, 0, 0, 0, 0x27 ; DAA
.db "DI",0,0, 0, 0, 0, 0xf3 ; DI
.db "DEC", 0, 'l', 0, 0, 0x35 ; DEC (HL)
.db "DEC", 0, 0xb, 0, 3, 0b00000101 ; DEC r
.db "DEC", 0, 0x3, 0, 4, 0b00001011 ; DEC s
.db "EI",0,0, 0, 0, 0, 0xfb ; EI
.db "EX",0,0, 'p', 'h', 0, 0xe3 ; EX (SP), HL
.db "EX",0,0, 'a', 'f', 0, 0x08 ; EX AF, AF'
@ -503,6 +513,8 @@ instrTBlPrimary:
.db "EXX", 0, 0, 0, 0, 0xd9 ; EXX
.db "HALT", 0, 0, 0, 0x76 ; HALT
.db "INC", 0, 'l', 0, 0, 0x34 ; INC (HL)
.db "INC", 0, 0xb, 0, 3, 0b00000100 ; INC r
.db "INC", 0, 0x3, 0, 4, 0b00000011 ; INC s
.db "JP",0,0, 'l', 0, 0, 0xe9 ; JP (HL)
.db "LD",0,0, 'c', 'A', 0, 0x02 ; LD (BC), A
.db "LD",0,0, 'e', 'A', 0, 0x12 ; LD (DE), A
@ -515,13 +527,20 @@ instrTBlPrimary:
.db "OR",0,0, 'l', 0, 0, 0xb6 ; OR (HL)
.db "OR",0,0, 0xb, 0, 0, 0b10110000 ; OR r
.db "POP", 0, 0x1, 0, 4, 0b11000001 ; POP qq
.db "PUSH", 0x1, 0, 4, 0b11000101 ; PUSH qq
.db "RET", 0, 0xa, 0, 3, 0b11000000 ; RET cc
.db "RET", 0, 0, 0, 0, 0xc9 ; RET
.db "RLA", 0, 0, 0, 0, 0x17 ; RLA
.db "RLCA", 0, 0, 0, 0x07 ; RLCA
.db "RRA", 0, 0, 0, 0, 0x1f ; RRA
.db "RRCA", 0, 0, 0, 0x0f ; RRCA
.db "SBC", 0, 'A', 'h', 0, 0x9e ; SBC A, HL
.db "SBC", 0, 'A', 0xb, 0, 0b10011000 ; SBC A, r
.db "SCF", 0, 0, 0, 0, 0x37 ; SCF
.db "SUB", 0, 'A', 'h', 0, 0x96 ; SUB A, HL
.db "SUB", 0, 'A', 0xb, 0, 0b10010000 ; SUB A, r
.db "XOR", 0, 'l', 0, 0, 0xae ; XOR (HL)
.db "XOR", 0, 0xb, 0, 0, 0b10101000 ; XOR r
; *** Variables ***