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zasm: add LD r, (IX/Y+d) support
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@ -2,7 +2,7 @@
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; Number of rows in the argspec table
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ARGSPEC_TBL_CNT .equ 31
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; Number of rows in the primary instructions table
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INSTR_TBL_CNT .equ 144
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INSTR_TBL_CNT .equ 146
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; size in bytes of each row in the primary instructions table
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INSTR_TBL_ROWSIZE .equ 6
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; Instruction IDs They correspond to the index of the table in instrNames
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@ -513,6 +513,22 @@ handleLDIXYr:
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ld c, 3
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ret
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handleLDrIX:
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ld a, 0xdd
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jr handleLDrIXY
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handleLDrIY:
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ld a, 0xfd
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handleLDrIXY:
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ld (instrUpcode), a
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ld a, (curArg1+1) ; group value
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rla \ rla \ rla
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or 0b01000110 ; second upcode
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ld (instrUpcode+1), a
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ld a, (curArg2+1) ; IXY displacement
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ld (instrUpcode+2), a
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ld c, 3
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ret
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handleLDrr:
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; first argument is displaced by 3 bits, second argument is not
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; displaced and we or that with a leading 0b01000000
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@ -1038,7 +1054,7 @@ instrTBl:
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.db I_LD, 'l', 'n', 0, 0x36 , 0 ; LD (HL), n
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.db I_LD, 0xb, 'n', 3, 0b00000110 , 0 ; LD r, n
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.db I_LD, 0xb, 0xb, 0x20 \ .dw handleLDrr ; LD r, r'
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.db I_LD, 0x3, 'N', 4, 0b00000001 , 0 ; LD dd, n
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.db I_LD, 0x3, 'N', 4, 0b00000001 , 0 ; LD dd, nn
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.db I_LD, 'X', 'N', 0, 0xdd, 0x21 ; LD IX, NN
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.db I_LD, 'Y', 'N', 0, 0xfd, 0x21 ; LD IY, NN
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.db I_LD, 'M', 'A', 0, 0x32 , 0 ; LD (NN), A
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@ -1055,6 +1071,8 @@ instrTBl:
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.db I_LD, 'y', 'n', 0x20 \ .dw handleLDIYn ; LD (IY+d), n
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.db I_LD, 'x', 0xb, 0x20 \ .dw handleLDIXr ; LD (IX+d), r
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.db I_LD, 'y', 0xb, 0x20 \ .dw handleLDIYr ; LD (IY+d), r
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.db I_LD, 0xb, 'x', 0x20 \ .dw handleLDrIX ; LD r, (IX+d)
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.db I_LD, 0xb, 'y', 0x20 \ .dw handleLDrIY ; LD r, (IY+d)
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.db I_LDD, 0, 0, 0, 0xed, 0xa8 ; LDD
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.db I_LDDR,0, 0, 0, 0xed, 0xb8 ; LDDR
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.db I_LDI, 0, 0, 0, 0xed, 0xa0 ; LDI
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@ -17,3 +17,5 @@ label2: .dw 0x42
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ld ix, 1234
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ld iy, 2345
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ld (ix+1), l
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ld l, (ix+1)
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ld hl, 0x100
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