mirror of https://github.com/A2osX/A2osX.git
151 lines
4.5 KiB
Plaintext
151 lines
4.5 KiB
Plaintext
PR#3
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PREFIX /A2OSX.BUILD
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LOMEM $A00
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INC 1
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AUTO 6
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.LIST OFF
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*--------------------------------------
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* KERNEL CONSTANTS DEFINITON
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*--------------------------------------
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K.ENV.SIZE .EQ 256
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K.FLT.MAX .EQ 4
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K.EVT.MAX .EQ 8
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K.DEV.MAX .EQ 32
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K.PS.MAX .EQ 32
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*--------------------------------------
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H.BIN.T .EQ 0
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H.BIN.T.DRV65 .EQ $4CD8 6502:cld,jmp abs
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H.BIN.T.LIB65 .EQ $7CD8 6502:cld,jmp (abs,x)
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H.BIN.T.BIN65 .EQ $7CD8 6502:cld,jmp (abs,x)
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*H.BIN.T.LIB80 .EQ $A28D Z80:
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*H.BIN.T.BIN80 .EQ $A28D Z80:
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H.BIN.JMP .EQ 2
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*H.BIN.CODE.TYPE .EQ 4
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*H.BIN.VERSION .EQ 5
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H.BIN.CODE.LEN .EQ 8
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*
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H.BIN.EXE.DS.SIZE .EQ 10
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H.BIN.EXE.SS.SIZE .EQ 12
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H.BIN.EXE.ZP.SIZE .EQ 13
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H.BIN.EXE.REL.TABLE .EQ 16
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*
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H.BIN.DRV.HEADER.O .EQ 10
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H.BIN.DRV.CODE.O .EQ 12
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H.BIN.DRV.CODE.LEN .EQ 14
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H.BIN.DRV.REL.TABLE .EQ 0
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*--------------------------------------
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ZPKERNEL .EQ $0
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ZPMEMMGR .EQ $8
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*--------------------------------------
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* MoveAux / XFer
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*--------------------------------------
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A1L .EQ $3C
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A2L .EQ $3E
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A4L .EQ $42
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XFer.JMP .EQ $3ED
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AuxMove .EQ $C311
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XFer .EQ $C314 CS:M->X, VS:Use Aux ZP
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*--------------------------------------
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* $42-$47 ProDOS Block Device Drivers Main
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*--------------------------------------
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* $5E-$C8 RESERVED APPLESOFT Main/Aux (ROM Call, no need to switch back MainZP)
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*--------------------------------------
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SIGNFLG .EQ $16 COS,SIN,TAN
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INDEX .EQ $5E ->$5F
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FORPNT .EQ $85 ->$86
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FAC .EQ $9D ->$A1
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FAC.SIGN .EQ $A2
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*FAC.EXTENSION .EQ $AC
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TXTPTR .EQ $B8
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*--------------------------------------
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* ROM Entry Point
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*--------------------------------------
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ROM.FSUB .EQ 0
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ROM.FADD .EQ 2
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ROM.LTOF .EQ 4
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ROM.LOG .EQ 6
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ROM.FMULT .EQ 8
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ROM.SETARG .EQ 10
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ROM.FDIV .EQ 12
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ROM.SETFAC .EQ 14
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ROM.GETFAC .EQ 16 Copy FAC to (FORPNT)
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ROM.FCOMP .EQ 18
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ROM.QINT .EQ 20
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ROM.FIN .EQ 22
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ROM.FOUT .EQ 24
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ROM.SQR .EQ 26
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ROM.PWR .EQ 28
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ROM.EXP .EQ 30
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ROM.COS .EQ 32
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ROM.SIN .EQ 34
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ROM.TAN .EQ 36
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ROM.ATAN .EQ 38
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*--------------------------------------
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* Memory Map
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*--------------------------------------
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A2osX.SaveSM .EQ $100 Aux
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A2osX.SaveSX .EQ $101 Aux
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*--------------------------------------
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* Main $200 -> 2FF : (Used By ProDOS,Clock DRV....)
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* Main $300 -> 3EF : <free>
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* Main $3F0 -> 3FF : SYS Vectors (reset,IRQ...)
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* Aux $200 -> 3FD : /RAM Driver
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* Aux $3FE -> 3FF : IRQ Vector
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*--------------------------------------
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K.S.STAT .EQ $0300 S.STAT for internal kernel operations
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K.S.DSTAT .EQ $0340 S.DSTAT=25 or higher depends on dev type
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K.SP.PARAMS .EQ $0360 Max 9 bytes
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K.MLI.PATH .EQ $0369 64+1
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K.MLI.PARAMS .EQ $03AA Main, 18 bytes min for GetFileInfo (ATLK needs MORE!!!...32 max for now)
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*--------------------------------------
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K.STACKTOP .EQ $03ED XFer !!! down to $3E0
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*--------------------------------------
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*** $3F0-$3FF IRQ Handler.... ***
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*--------------------------------------
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* Main/Aux $400 -> $7FF : TXT PAGE1 System Screen
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* Main/Aux $800 -> $BFF : TXT PAGE2 Console Screen
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*--------------------------------------
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* free $0C00->$17FF = $C00 (3072) Aux
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*--------------------------------------
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K.Buf256 .EQ $0C00 Main
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*--------------------------------------
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PS.Table.PID .EQ $0D00 K.PS.MAX
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PS.Table.hMem .EQ $0D20 K.PS.MAX
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*--------------------------------------
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Evt.Table .EQ $0D40 K.EVT.MAX*S.EVT.SIZE=8*8=64b
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*--------------------------------------
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Flt.Table .EQ $0D80 K.FLT.MAX*S.FLT.SIZE=4*32=128b
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*--------------------------------------
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Dev.Table .EQ $0E00 K.DEV.MAX*S.DEV=32*16=512b
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*--------------------------------------
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*** Z80 Reserved $1000-10FF***
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*--------------------------------------
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Z80JMP .EQ $1000 (00000h) Up To $10FF
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Z80STACK .EQ $10FF (000FFh) Down to $1000
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*--------------------------------------
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* CORE $1100->$17FF = $700 Main
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*--------------------------------------
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* MemMgr : $1800->$1FFF MAIN/AUX (2 kBytes)
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*--------------------------------------
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Mem.Table .EQ $1800 Slot 0 is Reserved
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Mem.LoMem .EQ $1800
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Mem.Free .EQ $1802
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Mem.HiMem .EQ $1804
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Mem.LastSlot .EQ $1806
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*--------------------------------------
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Mem.MLoMem .EQ $2000
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Mem.MHiMem .EQ $BD00
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Mem.XLoMem .EQ $2000
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Mem.XHiMem .EQ $C000
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*--------------------------------------
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DevMgr.HiMem .EQ $FFFA Protect IRQ vectors in Aux LC
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*--------------------------------------
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MAN
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SAVE /A2OSX.BUILD/INC/KERNEL.I
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LOAD /A2OSX.SRC/SYS/KERNEL.S
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ASM
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