mirror of
https://github.com/g012/l65.git
synced 2024-09-27 04:54:56 +00:00
300 lines
7.9 KiB
Lua
300 lines
7.9 KiB
Lua
M = require "asm"
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local op_eval_byte = function(late, early) return M.byte_normalize(M.op_eval(late, early)) end
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M.op_eval_byte = op_eval_byte
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local op_eval_word = function(late, early) return M.word_normalize(M.op_eval(late, early)) end
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M.op_eval_word = op_eval_word
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local opimp={
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block=M.op(0x31,13),
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calb=M.op(0x63,13),
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daa=M.op(0x61,4),
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ex=M.op(0x10,4),
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exx=M.op(0x11,4),
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halt=M.op(0x01,6),
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jb=M.op(0x73,4),
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nop=M.op(0x00,4),
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ret=M.op(0x08,11),
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reti=M.op(0x62,15),
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rets=M.op(0x18,11),
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sio=M.op(0x09,4),
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softi=M.op(0x72,19),
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stm=M.op(0x19,4),
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['table']=M.op(0x21,19)
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} M.opimp = opimp
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for k,v in pairs(opimp) do
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M[k .. 'imp' ] = function()
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table.insert(M.section_current.instructions, { size=1, cycles=v.cycles, bin=v.opc })
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end
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end
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local opa={
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dcr=M.op(0x51,4),
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inr=M.op(0x41,4),
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} M.opa = opa
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for k,v in pairs(opa) do
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M[k .. 'a'] = function()
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table.insert(M.section_current.instructions, { size=1, cycles=v.cycles, bin=v.opc })
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end
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end
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local opb={
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dcr=M.op(0x52,4),
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inr=M.op(0x42,4),
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} M.opb = opb
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for k,v in pairs(opb) do
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M[k .. 'b'] = function()
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table.insert(M.section_current.instructions, { size=1, cycles=v.cycles, bin=v.opc })
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end
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end
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local opc={
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dcr=M.op(0x53,4),
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inr=M.op(0x43,4),
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} M.opc = opc
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for k,v in pairs(opc) do
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M[k .. 'c'] = function()
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table.insert(M.section_current.instructions, { size=1, cycles=v.cycles, bin=v.opc })
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end
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end
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local opsp={
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dcx=M.op(0x03,7),
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inx=M.op(0x02,7)
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} M.opsp = opsp
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for k,v in pairs(opsp) do
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M[k .. 'sp'] = function()
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table.insert(M.section_current.instructions, { size=1, cycles=v.cycles, bin=v.opc })
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end
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end
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local opregxx ={
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mvib=M.op(0x6a,7),
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mvic=M.op(0x6b,7),
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mvid=M.op(0x6c,7),
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mvie=M.op(0x6d,7),
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mvih=M.op(0x6e,7),
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mvil=M.op(0x6f,7),
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mviv=M.op(0x68,7)
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} M.opregxx = opregxx
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for k,v in pairs(opregxx) do
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M[k] = function(late, early)
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local l65dbg = { info=debug.getinfo(2, 'Sl'), trace=debug.traceback(nil, 1) }
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local size = function() late,early = M.size_op(late,early) return 2 end
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local bin = function() local l65dbg=l65dbg return { v.opc, M.op_eval_byte(late,early) } end
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table.insert(M.section_current.instructions, { size=size, cycles=v.cycles, bin=bin })
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end
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end
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local opaxx ={
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aci=M.op(0x56,7),
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adi=M.op(0x46,7),
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adinc=M.op(0x26,7),
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ani=M.op(0x07,7),
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eqi=M.op(0x77,7),
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gti=M.op(0x27,7),
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lti=M.op(0x37,7),
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mvi=M.op(0x69,7),
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nei=M.op(0x67,7),
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offi=M.op(0x57,7),
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oni=M.op(0x47,7),
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ori=M.op(0x17,7),
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sbi=M.op(0x76,7),
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sui=M.op(0x66,7),
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suinb=M.op(0x36,7),
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xri=M.op(0x16,7)
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} M.opaxx = opaxx
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for k,v in pairs(opaxx) do
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M[k .. 'a'] = function(late, early)
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local l65dbg = { info=debug.getinfo(2, 'Sl'), trace=debug.traceback(nil, 1) }
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local size = function() late,early = M.size_op(late,early) return 2 end
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local bin = function() local l65dbg=l65dbg return { v.opc, M.op_eval_byte(late,early) } end
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table.insert(M.section_current.instructions, { size=size, cycles=v.cycles, bin=bin })
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end
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end
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local opw = {
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call=M.op(0x44,16),
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jmp=M.op(0x54,10),
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lxisp=M.op(0x04,10),
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lxibc=M.op(0x14,10),
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lxide=M.op(0x24,10),
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lxihl=M.op(0x34,10)
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} M.opw = opw
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for k,v in pairs(opw) do
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M[k] = function(late, early)
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local l65dbg = { info=debug.getinfo(2, 'Sl'), trace=debug.traceback(nil, 1) }
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local size = function() late,early = M.size_op(late,early) return 3 end
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local bin = function() local l65dbg=l65dbg
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local x = M.op_eval_word(late,early)
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return { v.opc, x&0xff, x>>8 }
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end
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table.insert(M.section_current.instructions, { size=size, cycles=v.cycles, bin=bin })
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end
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end
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M.calt = function(late, early)
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local l65dbg = { info=debug.getinfo(2, 'Sl'), trace=debug.traceback(nil, 1) }
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local op = { cycles=19 }
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op.size = function() late,early = M.size_op(late,early) return 1 end
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op.bin = function()
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local l65dbg=l65dbg
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local x = M.op_eval_byte(late,early)
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if (x%2 == 1) then error("offset should be even : " .. x) end
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if x < 0x80 or x > 0xfe then error("offset out of range : " .. x) end
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x = (x>>1) + 0x40
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return x
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end
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table.insert(M.section_current.instructions, op)
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end
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M.calf = function(late, early)
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local l65dbg = { info=debug.getinfo(2, 'Sl'), trace=debug.traceback(nil, 1) }
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local op = { cycles=16 }
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op.size = function() late,early = M.size_op(late,early) return 2 end
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op.bin = function() local l65dbg=l65dbg
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local x = 0 + M.op_eval_word(late,early)
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if x < 0x0800 or x > 0xffff then error("subroutine address out of range [0x0800-0xffff]: " .. x) end
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x = x - 0x0800;
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return { 0x78 | ((x>>8) & 0x07), x&0xff }
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end
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table.insert(M.section_current.instructions, op)
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end
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M.jr = function(label)
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local l65dbg = { info=debug.getinfo(2, 'Sl'), trace=debug.traceback(nil, 1) }
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local parent,offset = M.label_current
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local section,rorg = M.section_current,M.location_current.rorg
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local op = { cycles=13 }
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op.size = function()
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offset = section.size
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label = M.size_dc(label)
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return 1
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end
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op.bin = function()
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local l65dbg=l65dbg
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local x,l = label,label
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if type(x) == 'function' then x=x() end
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if type(x) == 'string' then
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if x:sub(1,1) == '_' then x=parent..x l=x end
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x = symbols[x]
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end
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if type(x) ~= 'number' then error("unresolved branch target: " .. tostring(x)) end
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x = x-1 - offset - rorg(section.org)
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if x < -32 or x > 0x32 then error("branch target out of range for " .. l .. ": " .. x)
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elseif x >= 0 then
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x = 0xc0 + x
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return
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else
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return x & 0xff
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end
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end
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table.insert(M.section_current.instructions, op)
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end
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local op48imp = {
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ei=M.op(0x20,8),
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di=M.op(0x24,8),
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clc=M.op(0x2a,8),
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pen=M.op(0x2c,11),
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per=M.op(0x3c,11),
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pex=M.op(0x2d,11),
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rld=M.op(0x38,17),
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rrd=M.op(0x39,17),
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stc=M.op(0x2b,8),
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} M.op48imp = op48imp
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for k,v in pairs(op48imp) do
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M[k .. 'imp'] = function()
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table.insert(M.section_current.instructions, { size=2, cycles=v.cycles, bin={ 0x48, v.opc } })
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end
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end
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return M
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--[[ [todo]
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8 bits instructions:
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JRE+ 0x4e xx 17
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JRE- 0x4f xx 17
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ani
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ori
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gti
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lti
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oni
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offi
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nei
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mvi
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eqi
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-- d
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ldaxm=M.op(0x2e,7),
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ldaxp=M.op(0x2c,7),
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staxm=M.op(0x3e,7),
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staxp=M.op(0x3c,7)
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-- h
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ldaxm=M.op(0x2f,7),
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ldaxp=M.op(0x2d,7),
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staxm=M.op(0x3f,7),
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staxp=M.op(0x3d,7)
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-- wa = v+xx
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inrw=M.op(0x20,13),
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ldaw=M.op(0x28,10),
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dcrw=M.op(0x30,13),
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staw=M.op(0x38,10),
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bit0=M.op(0x58,10),
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bit1=M.op(0x59,10),
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bit2=M.op(0x5a,10),
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bit3=M.op(0x5b,10),
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bit4=M.op(0x5c,10),
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bit5=M.op(0x5d,10),
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bit6=M.op(0x5e,10),
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bit7=M.op(0x5f,10)
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-- r8,r8
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movab=M.op(0x0a,4), movac=M.op(0x0b,4),
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movad=M.op(0x0c,4), movae=M.op(0x0d,4),
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movah=M.op(0x0e,4), moval=M.op(0x0f,4),
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movba=M.op(0x1a,4), movca=M.op(0x1b,4),
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movda=M.op(0x1c,4), movea=M.op(0x1d,4),
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movha=M.op(0x1e,4), movla=M.op(0x1f,4),
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-- hhll
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call=M.op(0x44,16),
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jmp=M.op(0x54,10),
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lxisp=M.op(0x04,10),
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lxibc=M.op(0x14,10),
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lxide=M.op(0x24,10),
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lxihl=M.op(0x34,10)
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-- (r16),hhll
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mvixbc=M.op(0x49,10),
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mvixde=M.op(0x4a,10),
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mvixhl=M.op(0x4b,10)
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- (r16)
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dcxbc=M.op(0x13,7),
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dcxde=M.op(0x23,7),
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dcxhl=M.op(0x33,7),
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inxbc=M.op(0x12,7),
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inxde=M.op(0x22,7),
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inxhl=M.op(0x32,7),
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ldaxbc=M.op(0x29,7),
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ldaxde=M.op(0x2a,7),
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ldaxhl=M.op(0x2b,7),
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staxbc=M.op(0x39,7),
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staxde=M.op(0x3a,7),
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staxhl=M.op(0x3b,7),
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16 bits instructions:
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0x48xx
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0x4cxx
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0x4dxx
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0x60xx
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0x64xx
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0x70xx
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0x74xx
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]]--
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