From 115dc1897106500608b6e32405267be7597c516c Mon Sep 17 00:00:00 2001
From: Virgil Dupras <hsoft@hardcoded.net>
Date: Sat, 20 Apr 2019 22:37:38 -0400
Subject: [PATCH] zasm: add support for extended instructions
---
apps/zasm/tests/geninstrs.py | 116 +++++++------------
apps/zasm/tests/runtests.sh | 3 +-
apps/zasm/zasm.asm | 266 +++++++++++++++++++++++++------------------
3 files changed, 194 insertions(+), 191 deletions(-)
diff --git a/apps/zasm/tests/geninstrs.py b/apps/zasm/tests/geninstrs.py
index 5a0d9d7..27294d8 100755
--- a/apps/zasm/tests/geninstrs.py
+++ b/apps/zasm/tests/geninstrs.py
@@ -2,6 +2,8 @@
# Generate almost all possible combination for instructions from instruction
# tables
+import sys
+
argspecTbl = {
'A': "A",
'B': "B",
@@ -39,82 +41,34 @@ argGrpTbl = {
chr(0x0b): "BCDEHLA",
}
-instrTBlPrimary = [
- ("ADC", 'A', 'l', 0, 0x8e),
- ("ADC", 'A', 0xb, 0, 0b10001000),
- ("ADC", 'A', 'n', 0, 0xce ),
- ("ADD", 'A', 'l', 0, 0x86 ),
- ("ADD", 'A', 0xb, 0, 0b10000000),
- ("ADD", 'A', 'n', 0, 0xc6 ),
- ("ADD", 'h', 0x3, 4, 0b00001001 ),
- ("AND", 'l', 0, 0, 0xa6 ),
- ("AND", 0xb, 0, 0, 0b10100000),
- ("AND", 'n', 0, 0, 0xe6 ),
- ("CALL", 0xa, 'N', 3, 0b11000100),
- ("CALL", 'N', 0, 0, 0xcd ),
- ("CCF", 0, 0, 0, 0x3f ),
- ("CP", 'l', 0, 0, 0xbe ),
- ("CP", 0xb, 0, 0, 0b10111000),
- ("CP", 'n', 0, 0, 0xfe ),
- ("CPL", 0, 0, 0, 0x2f ),
- ("DAA", 0, 0, 0, 0x27 ),
- ("DI", 0, 0, 0, 0xf3 ),
- ("DEC", 'l', 0, 0, 0x35 ),
- ("DEC", 0xb, 0, 3, 0b00000101),
- ("DEC", 0x3, 0, 4, 0b00001011),
- ("DJNZ", 'n', 0,0x80, 0x10 ),
- ("EI", 0, 0, 0, 0xfb ),
- ("EX", 'p', 'h', 0, 0xe3 ),
- ("EX", 'a', 'f', 0, 0x08 ),
- ("EX", 'd', 'h', 0, 0xeb ),
- ("EXX", 0, 0, 0, 0xd9 ),
- ("HALT", 0, 0, 0, 0x76 ),
- ("IN", 'A', 'm', 0, 0xdb ),
- ("INC", 'l', 0, 0, 0x34 ),
- ("INC", 0xb, 0, 3, 0b00000100),
- ("INC", 0x3, 0, 4, 0b00000011),
- ("JP", 'l', 0, 0, 0xe9 ),
- ("JP", 'N', 0, 0, 0xc3 ),
- ("JR", 'n', 0,0x80, 0x18 ),
- ("JR",'C','n',0x80, 0x38 ),
- ("JR",'=','n',0x80, 0x30 ),
- ("JR",'Z','n',0x80, 0x28 ),
- ("JR",'z','n',0x80, 0x20 ),
- ("LD", 'c', 'A', 0, 0x02 ),
- ("LD", 'e', 'A', 0, 0x12 ),
- ("LD", 'A', 'c', 0, 0x0a ),
- ("LD", 'A', 'e', 0, 0x0a ),
- ("LD", 's', 'h', 0, 0x0a ),
- ("LD", 'l', 0xb, 0, 0b01110000),
- ("LD", 0xb, 'l', 3, 0b01000110),
- ("LD", 'l', 'n', 0, 0x36 ),
- ("LD", 0xb, 'n', 3, 0b00000110),
- ("LD", 0x3, 'N', 4, 0b00000001),
- ("LD", 'M', 'A', 0, 0x32 ),
- ("LD", 'A', 'M', 0, 0x3a ),
- ("LD", 'M', 'h', 0, 0x22 ),
- ("LD", 'h', 'M', 0, 0x2a ),
- ("NOP", 0, 0, 0, 0x00 ),
- ("OR", 'l', 0, 0, 0xb6 ),
- ("OR", 0xb, 0, 0, 0b10110000),
- ("OUT", 'm', 'A', 0, 0xd3 ),
- ("POP", 0x1, 0, 4, 0b11000001),
- ("PUSH", 0x1, 0, 4, 0b11000101),
- ("RET", 0xa, 0, 3, 0b11000000),
- ("RET", 0, 0, 0, 0xc9 ),
- ("RLA", 0, 0, 0, 0x17 ),
- ("RLCA", 0, 0, 0, 0x07 ),
- ("RRA", 0, 0, 0, 0x1f ),
- ("RRCA", 0, 0, 0, 0x0f ),
- ("SBC", 'A', 'l', 0, 0x9e ),
- ("SBC", 'A', 0xb, 0, 0b10011000),
- ("SCF", 0, 0, 0, 0x37 ),
- ("SUB", 'A', 'l', 0, 0x96 ),
- ("SUB", 'A', 0xb, 0, 0b10010000),
- ("SUB", 'n', 0, 0, 0xd6 ),
- ("XOR", 'l', 0, 0, 0xae ),
- ("XOR", 0xb, 0, 0, 0b10101000),
-]
+def cleanupLine(line):
+ line = line.strip()
+ idx = line.rfind(';')
+ if idx >= 0:
+ line = line[:idx]
+ return line
+
+def getDbLines(fp, tblname):
+ lookingFor = f"{tblname}:"
+ line = fp.readline()
+ while line:
+ line = cleanupLine(line)
+ if line == lookingFor:
+ break
+ line = fp.readline()
+ else:
+ raise Exception(f"{tblname} not found")
+
+ result = []
+ line = fp.readline()
+ while line:
+ line = cleanupLine(line)
+ if line:
+ if not line.startswith('.db'):
+ break
+ result.append([s.strip() for s in line[4:].split(',')])
+ line = fp.readline()
+ return result
def genargs(argspec):
if not argspec:
@@ -134,7 +88,15 @@ def genargs(argspec):
def main():
- for n, a1, a2, f, op in instrTBlPrimary:
+ asmfile = sys.argv[1]
+ with open(asmfile, 'rt') as fp:
+ instrTbl = getDbLines(fp, 'instrTBl')
+ for row in instrTbl:
+ n = eval(row[0])
+ # we need to adjust for zero-char name filling
+ arg1index = 5 - len(n)
+ a1 = eval(row[arg1index])
+ a2 = eval(row[arg1index+1])
args1 = genargs(a1)
if args1:
for arg1 in args1:
diff --git a/apps/zasm/tests/runtests.sh b/apps/zasm/tests/runtests.sh
index 9eec5b1..d518027 100755
--- a/apps/zasm/tests/runtests.sh
+++ b/apps/zasm/tests/runtests.sh
@@ -5,8 +5,9 @@ set -e
TMPFILE=$(mktemp)
SCAS=scas
ZASM=../emul/zasm
+ASMFILE=../zasm.asm
-./geninstrs.py | \
+./geninstrs.py $ASMFILE | \
while read line; do
echo $line | tee "${TMPFILE}"
EXPECTED=$($SCAS -o - "${TMPFILE}" | xxd)
diff --git a/apps/zasm/zasm.asm b/apps/zasm/zasm.asm
index 0fdb24c..7420fcc 100644
--- a/apps/zasm/zasm.asm
+++ b/apps/zasm/zasm.asm
@@ -4,9 +4,9 @@
; Number of rows in the argspec table
ARGSPEC_TBL_CNT .equ 27
; Number of rows in the primary instructions table
-INSTR_TBLP_CNT .equ 74
+INSTR_TBL_CNT .equ 75
; size in bytes of each row in the primary instructions table
-INSTR_TBLP_ROWSIZE .equ 8
+INSTR_TBL_ROWSIZE .equ 9
; *** Code ***
.org USER_CODE
@@ -37,6 +37,16 @@ rlaX:
; Copy BC bytes from (HL) to (DE).
copy:
+ ; first, let's see if BC is zero. if it is, we have nothing to do.
+ ; remember: 16-bit inc/dec don't modify flags. that's why we check B
+ ; and C separately.
+ inc b
+ dec b
+ jr nz, .proceed
+ inc c
+ dec c
+ ret z ; zero? nothing to do
+.proceed:
push bc
push de
push hl
@@ -500,9 +510,23 @@ getUpcode:
push ix
push de
push hl
+ push bc
; First, let's go in IX mode. It's easier to deal with offsets here.
ld ixh, d
ld ixl, e
+ ; we begin by writing our "base upcode", which can be one or two bytes
+ ld a, (ix+7) ; first upcode
+ ld (curUpcode), a
+ ld de, curUpcode ; from this point, DE points to "where we are"
+ ; in terms of upcode writing.
+ inc de ; make DE point to where we should write next.
+ ld a, (ix+8) ; second upcode
+ cp 0 ; do we have a second upcode?
+ jr z, .onlyOneUpcode
+ ; we have two upcodes
+ ld (de), a
+ inc de
+.onlyOneUpcode:
; now, let's see if we're dealing with a group here
ld a, (ix+4) ; first argspec
call isGroupId
@@ -510,49 +534,52 @@ getUpcode:
; First arg not a group. Maybe second is?
ld a, (ix+5) ; 2nd argspec
call isGroupId
- jr nz, .notgroup
+ jr nz, .writeExtraBytes ; not a group? nothing to do. go to
+ ; next step: write extra bytes
; Second arg is group
- ld de, curArg2
+ ld hl, curArg2
jr .isGroup
.firstArgIsGroup:
- ld de, curArg1
+ ld hl, curArg1
.isGroup:
- ; A is a group, good, now let's get its value. DE is pointing to
- ; the argument.
- ld h, a
- ld a, (de)
+ ; A is a group, good, now let's get its value. HL is pointing to
+ ; the argument. A little bit of stack gymnastic is necessary to put
+ ; A into H and (HL) into A.
+ push af
+ ld a, (hl)
+ pop hl ; from push af 2 lines above
call findInGroup ; we don't check for match, it's supposed to
; always match. Something is very wrong if it
; doesn't
; Now, we have our arg "group value" in A. Were going to need to
; displace it left by the number of steps specified in the table.
- push bc
push af
ld a, (ix+6) ; displacement bit
and a, 0xf ; we only use the lower nibble.
ld b, a
pop af
call rlaX
- pop bc
; At this point, we have a properly displaced value in A. We'll want
; to OR it with the opcode.
- or (ix+7) ; upcode
-
- ; Success!
- jr .writeFirstOpcode
-.notgroup:
- ; not a group? easy as pie: we return the opcode directly.
- ld a, (ix+7) ; upcode is on 8th byte
-.writeFirstOpcode:
- ; At the end, we have our final opcode in A!
- ld de, curUpcode
- ld (de), a
-
+ ; However, we first have to verify whether this ORing takes place on
+ ; the second upcode or the first.
+ bit 6, (ix+6)
+ jr z, .firstUpcode ; not set: first upcode
+ or (ix+8) ; second upcode
+ ld (curUpcode+1), a
+ jr .writeExtraBytes
+.firstUpcode:
+ or (ix+7) ; first upcode
+ ld (curUpcode), a
+ jr .writeExtraBytes
+.writeExtraBytes:
; Good, we are probably finished here for many primary opcodes. However,
; some primary opcodes take 8 or 16 bit constants as an argument and
; if that's the case here, we need to write it too.
- ; We still have our instruction row in IX. Let's revisit it.
+ ; We still have our instruction row in IX and we have DE pointing to
+ ; where we should write next (which could be the second or the third
+ ; byte of curUpcode).
ld a, (ix+4) ; first argspec
ld hl, curArg1
call checkNOrM
@@ -569,9 +596,9 @@ getUpcode:
jr z, .withByte
cp 'm'
jr z, .withByte
- ; nope, no number, aright, only one opcode
- ld a, 1
- jr .end
+ ; nope, no number, alright, we're finished here
+ ld c, 1
+ jr .computeBytesWritten
.withByte:
; verify that the MSB in argument is zero
inc hl
@@ -589,23 +616,34 @@ getUpcode:
dec (hl)
dec (hl)
.skipDecrease:
- inc de
ldi
- ld a, 2
- jr .end
+ ld c, 2
+ jr .computeBytesWritten
.withWord:
- inc de
inc hl ; HL now points to LSB
; Clear to proceed. HL already points to our number
ldi ; LSB written, we point to MSB now
ldi ; MSB written
- ld a, 3
+ ld c, 3
+ jr .computeBytesWritten
+.computeBytesWritten:
+ ; At this point, everything that we needed to write in curUpcode is
+ ; written an C is 1 if we have no extra byte, 2 if we have an extra
+ ; byte and 3 if we have an extra word. What we need to do here is check
+ ; if ix+8 is non-zero and increase C if it is.
+ ld a, (ix+8)
+ cp 0
+ jr z, .end ; no second upcode? nothing to do.
+ ; We have 2 base upcodes
+ inc c
jr .end
.numberTruncated:
; problem: not zero, so value is truncated. error
- xor a
+ xor c
.end:
+ ld a, c
+ pop bc
pop hl
pop de
pop ix
@@ -628,13 +666,13 @@ parseLine:
ret
.noerror:
push de
- ld de, instrTBlPrimary
- ld b, INSTR_TBLP_CNT
+ ld de, instrTBl
+ ld b, INSTR_TBL_CNT
.loop:
ld a, (de)
call matchPrimaryRow
jr z, .match
- ld a, INSTR_TBLP_ROWSIZE
+ ld a, INSTR_TBL_ROWSIZE
call JUMP_ADDDE
djnz .loop
; no match
@@ -720,88 +758,90 @@ argGrpABCDEHL:
; 1 byte for arg constant
; 1 byte for 2nd arg constant
; 1 byte displacement for group arguments + flags
-; 1 byte for upcode
+; 2 bytes for upcode (2nd byte is zero if instr is one byte)
;
; The displacement bit is split in 2 nibbles: lower nibble is the displacement
; value, upper nibble is for flags. There is one flag currently, on bit 7, that
; indicates that the numerical argument is of the 'e' type and has to be
-; decreased by 2 (djnz, jr).
+; decreased by 2 (djnz, jr). On bit 6, it indicates that the group argument's
+; value is to be placed on the second upcode rather than the first.
-instrTBlPrimary:
- .db "ADC", 0, 'A', 'l', 0, 0x8e ; ADC A, (HL)
- .db "ADC", 0, 'A', 0xb, 0, 0b10001000 ; ADC A, r
- .db "ADC", 0, 'A', 'n', 0, 0xce ; ADC A, n
- .db "ADD", 0, 'A', 'l', 0, 0x86 ; ADD A, (HL)
- .db "ADD", 0, 'A', 0xb, 0, 0b10000000 ; ADD A, r
- .db "ADD", 0, 'A', 'n', 0, 0xc6 ; ADD A, n
- .db "ADD", 0, 'h', 0x3, 4, 0b00001001 ; ADD HL, ss
- .db "AND", 0, 'l', 0, 0, 0xa6 ; AND (HL)
- .db "AND", 0, 0xb, 0, 0, 0b10100000 ; AND r
- .db "AND", 0, 'n', 0, 0, 0xe6 ; AND n
- .db "CALL", 0xa, 'N', 3, 0b11000100 ; CALL cc, NN
- .db "CALL", 'N', 0, 0, 0xcd ; CALL NN
- .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 "CP",0,0, 'n', 0, 0, 0xfe ; CP n
- .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 "DJNZ", 'n', 0,0x80, 0x10 ; DJNZ e
- .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'
- .db "EX",0,0, 'd', 'h', 0, 0xeb ; EX DE, HL
- .db "EXX", 0, 0, 0, 0, 0xd9 ; EXX
- .db "HALT", 0, 0, 0, 0x76 ; HALT
- .db "IN",0,0, 'A', 'm', 0, 0xdb ; IN A, (n)
- .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 "JP",0,0, 'N', 0, 0, 0xc3 ; JP NN
- .db "JR",0,0, 'n', 0,0x80, 0x18 ; JR e
- .db "JR",0,0,'C','n',0x80, 0x38 ; JR C, e
- .db "JR",0,0,'=','n',0x80, 0x30 ; JR NC, e
- .db "JR",0,0,'Z','n',0x80, 0x28 ; JR Z, e
- .db "JR",0,0,'z','n',0x80, 0x20 ; JR NZ, e
- .db "LD",0,0, 'c', 'A', 0, 0x02 ; LD (BC), A
- .db "LD",0,0, 'e', 'A', 0, 0x12 ; LD (DE), A
- .db "LD",0,0, 'A', 'c', 0, 0x0a ; LD A, (BC)
- .db "LD",0,0, 'A', 'e', 0, 0x1a ; LD A, (DE)
- .db "LD",0,0, 's', 'h', 0, 0xf9 ; LD SP, HL
- .db "LD",0,0, 'l', 0xb, 0, 0b01110000 ; LD (HL), r
- .db "LD",0,0, 0xb, 'l', 3, 0b01000110 ; LD r, (HL)
- .db "LD",0,0, 'l', 'n', 0, 0x36 ; LD (HL), n
- .db "LD",0,0, 0xb, 'n', 3, 0b00000110 ; LD r, (HL)
- .db "LD",0,0, 0x3, 'N', 4, 0b00000001 ; LD dd, n
- .db "LD",0,0, 'M', 'A', 0, 0x32 ; LD (NN), A
- .db "LD",0,0, 'A', 'M', 0, 0x3a ; LD A, (NN)
- .db "LD",0,0, 'M', 'h', 0, 0x22 ; LD (NN), HL
- .db "LD",0,0, 'h', 'M', 0, 0x2a ; LD HL, (NN)
- .db "NOP", 0, 0, 0, 0, 0x00 ; NOP
- .db "OR",0,0, 'l', 0, 0, 0xb6 ; OR (HL)
- .db "OR",0,0, 0xb, 0, 0, 0b10110000 ; OR r
- .db "OUT", 0, 'm', 'A', 0, 0xd3 ; OUT (n), A
- .db "POP", 0, 0x1, 0, 4, 0b11000001 ; POP qq
- .db "PUSH", 0x1, 0, 4, 0b11000101 ; PUSH qq
- .db "RET", 0, 0, 0, 0, 0xc9 ; RET
- .db "RET", 0, 0xa, 0, 3, 0b11000000 ; RET cc
- .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', 'l', 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', 'l', 0, 0x96 ; SUB A, (HL)
- .db "SUB", 0, 'A', 0xb, 0, 0b10010000 ; SUB A, r
- .db "SUB", 0, 'n', 0, 0, 0xd6 ; SUB n
- .db "XOR", 0, 'l', 0, 0, 0xae ; XOR (HL)
- .db "XOR", 0, 0xb, 0, 0, 0b10101000 ; XOR r
+instrTBl:
+ .db "ADC", 0, 'A', 'l', 0, 0x8e , 0 ; ADC A, (HL)
+ .db "ADC", 0, 'A', 0xb, 0, 0b10001000 , 0 ; ADC A, r
+ .db "ADC", 0, 'A', 'n', 0, 0xce , 0 ; ADC A, n
+ .db "ADC", 0,'h',0x3,0x44, 0xed, 0b01001010 ; ADC HL, ss
+ .db "ADD", 0, 'A', 'l', 0, 0x86 , 0 ; ADD A, (HL)
+ .db "ADD", 0, 'A', 0xb, 0, 0b10000000 , 0 ; ADD A, r
+ .db "ADD", 0, 'A', 'n', 0, 0xc6 , 0 ; ADD A, n
+ .db "ADD", 0, 'h', 0x3, 4, 0b00001001 , 0 ; ADD HL, ss
+ .db "AND", 0, 'l', 0, 0, 0xa6 , 0 ; AND (HL)
+ .db "AND", 0, 0xb, 0, 0, 0b10100000 , 0 ; AND r
+ .db "AND", 0, 'n', 0, 0, 0xe6 , 0 ; AND n
+ .db "CALL", 0xa, 'N', 3, 0b11000100 , 0 ; CALL cc, NN
+ .db "CALL", 'N', 0, 0, 0xcd , 0 ; CALL NN
+ .db "CCF", 0, 0, 0, 0, 0x3f , 0 ; CCF
+ .db "CP",0,0, 'l', 0, 0, 0xbe , 0 ; CP (HL)
+ .db "CP",0,0, 0xb, 0, 0, 0b10111000 , 0 ; CP r
+ .db "CP",0,0, 'n', 0, 0, 0xfe , 0 ; CP n
+ .db "CPL", 0, 0, 0, 0, 0x2f , 0 ; CPL
+ .db "DAA", 0, 0, 0, 0, 0x27 , 0 ; DAA
+ .db "DI",0,0, 0, 0, 0, 0xf3 , 0 ; DI
+ .db "DEC", 0, 'l', 0, 0, 0x35 , 0 ; DEC (HL)
+ .db "DEC", 0, 0xb, 0, 3, 0b00000101 , 0 ; DEC r
+ .db "DEC", 0, 0x3, 0, 4, 0b00001011 , 0 ; DEC s
+ .db "DJNZ", 'n', 0,0x80, 0x10 , 0 ; DJNZ e
+ .db "EI",0,0, 0, 0, 0, 0xfb , 0 ; EI
+ .db "EX",0,0, 'p', 'h', 0, 0xe3 , 0 ; EX (SP), HL
+ .db "EX",0,0, 'a', 'f', 0, 0x08 , 0 ; EX AF, AF'
+ .db "EX",0,0, 'd', 'h', 0, 0xeb , 0 ; EX DE, HL
+ .db "EXX", 0, 0, 0, 0, 0xd9 , 0 ; EXX
+ .db "HALT", 0, 0, 0, 0x76 , 0 ; HALT
+ .db "IN",0,0, 'A', 'm', 0, 0xdb , 0 ; IN A, (n)
+ .db "INC", 0, 'l', 0, 0, 0x34 , 0 ; INC (HL)
+ .db "INC", 0, 0xb, 0, 3, 0b00000100 , 0 ; INC r
+ .db "INC", 0, 0x3, 0, 4, 0b00000011 , 0 ; INC s
+ .db "JP",0,0, 'l', 0, 0, 0xe9 , 0 ; JP (HL)
+ .db "JP",0,0, 'N', 0, 0, 0xc3 , 0 ; JP NN
+ .db "JR",0,0, 'n', 0,0x80, 0x18 , 0 ; JR e
+ .db "JR",0,0,'C','n',0x80, 0x38 , 0 ; JR C, e
+ .db "JR",0,0,'=','n',0x80, 0x30 , 0 ; JR NC, e
+ .db "JR",0,0,'Z','n',0x80, 0x28 , 0 ; JR Z, e
+ .db "JR",0,0,'z','n',0x80, 0x20 , 0 ; JR NZ, e
+ .db "LD",0,0, 'c', 'A', 0, 0x02 , 0 ; LD (BC), A
+ .db "LD",0,0, 'e', 'A', 0, 0x12 , 0 ; LD (DE), A
+ .db "LD",0,0, 'A', 'c', 0, 0x0a , 0 ; LD A, (BC)
+ .db "LD",0,0, 'A', 'e', 0, 0x1a , 0 ; LD A, (DE)
+ .db "LD",0,0, 's', 'h', 0, 0xf9 , 0 ; LD SP, HL
+ .db "LD",0,0, 'l', 0xb, 0, 0b01110000 , 0 ; LD (HL), r
+ .db "LD",0,0, 0xb, 'l', 3, 0b01000110 , 0 ; LD r, (HL)
+ .db "LD",0,0, 'l', 'n', 0, 0x36 , 0 ; LD (HL), n
+ .db "LD",0,0, 0xb, 'n', 3, 0b00000110 , 0 ; LD r, (HL)
+ .db "LD",0,0, 0x3, 'N', 4, 0b00000001 , 0 ; LD dd, n
+ .db "LD",0,0, 'M', 'A', 0, 0x32 , 0 ; LD (NN), A
+ .db "LD",0,0, 'A', 'M', 0, 0x3a , 0 ; LD A, (NN)
+ .db "LD",0,0, 'M', 'h', 0, 0x22 , 0 ; LD (NN), HL
+ .db "LD",0,0, 'h', 'M', 0, 0x2a , 0 ; LD HL, (NN)
+ .db "NOP", 0, 0, 0, 0, 0x00 , 0 ; NOP
+ .db "OR",0,0, 'l', 0, 0, 0xb6 , 0 ; OR (HL)
+ .db "OR",0,0, 0xb, 0, 0, 0b10110000 , 0 ; OR r
+ .db "OUT", 0, 'm', 'A', 0, 0xd3 , 0 ; OUT (n), A
+ .db "POP", 0, 0x1, 0, 4, 0b11000001 , 0 ; POP qq
+ .db "PUSH", 0x1, 0, 4, 0b11000101 , 0 ; PUSH qq
+ .db "RET", 0, 0, 0, 0, 0xc9 , 0 ; RET
+ .db "RET", 0, 0xa, 0, 3, 0b11000000 , 0 ; RET cc
+ .db "RLA", 0, 0, 0, 0, 0x17 , 0 ; RLA
+ .db "RLCA", 0, 0, 0, 0x07 , 0 ; RLCA
+ .db "RRA", 0, 0, 0, 0, 0x1f , 0 ; RRA
+ .db "RRCA", 0, 0, 0, 0x0f , 0 ; RRCA
+ .db "SBC", 0, 'A', 'l', 0, 0x9e , 0 ; SBC A, (HL)
+ .db "SBC", 0, 'A', 0xb, 0, 0b10011000 , 0 ; SBC A, r
+ .db "SCF", 0, 0, 0, 0, 0x37 , 0 ; SCF
+ .db "SUB", 0, 'A', 'l', 0, 0x96 , 0 ; SUB A, (HL)
+ .db "SUB", 0, 'A', 0xb, 0, 0b10010000 , 0 ; SUB A, r
+ .db "SUB", 0, 'n', 0, 0, 0xd6 , 0 ; SUB n
+ .db "XOR", 0, 'l', 0, 0, 0xae , 0 ; XOR (HL)
+ .db "XOR", 0, 0xb, 0, 0, 0b10101000 , 0 ; XOR r
; *** Variables ***