mirror of
https://github.com/A2osX/A2osX.git
synced 2025-02-18 15:30:43 +00:00
88 lines
3.0 KiB
Plaintext
88 lines
3.0 KiB
Plaintext
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PR#3
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PREFIX /A2OSX.BUILD
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LOMEM $900
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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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* Kernel ZP Aux
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*--------------------------------------
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ZPKERNEL .EQ $0
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ZPPtr1 .EQ ZPKERNEL
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ZPPtr2 .EQ ZPKERNEL+2
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ZPPtr3 .EQ ZPKERNEL+4
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ZPPtr4 .EQ ZPKERNEL+6
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*--------------------------------------
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ZPMEMMGR .EQ $8
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*--------------------------------------
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*--------------------------------------
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* $42-$47 ProDOS Block Device Drivers Main
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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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* 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.DEVSTAT .EQ $0340 S.DEVSTAT=25 or higher depends on dev type
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K.SP.PARAMS .EQ $0380 Max 9 bytes
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K.MLI.PARAMS .EQ $0390 Main, 18 bytes min for GetFileInfo (ATLK needs MORE!!!...32 max for now)
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K.MLI.PATH .EQ $03B0 64+1 -> $03D0
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*--------------------------------------
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*** $3F0-$3FF IRQ Handler.... ***
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*--------------------------------------
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* Main/Aux $400 -> $7FF : Console Screen
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* Main/Aux $800 -> $BFF : System Screen
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*--------------------------------------
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PS.Table.PID .EQ $0C00 K.PS.MAX
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PS.Table.hMem .EQ $0C00+K.PS.MAX
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K.Buf256 .EQ $0E00 Main
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*--------------------------------------
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K.STACKTOP .EQ $0F20 down to $0f00
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*--------------------------------------
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*** Z80 Reserved $0F00-10FF***
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*--------------------------------------
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Z80STACK .EQ $0FFF (0FFFFh) Down to $0F20
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Z80JMP .EQ $1000 (00000h) Up To $10FF
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*--------------------------------------
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FltMgr.Table .EQ $1100 K.FLT.MAX*S.FLT.SIZE=8*32=128b
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*--------------------------------------
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EvtMgr.Table .EQ $1180 K.EVT.MAX*S.EVT.SIZE=16*8=128b
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*--------------------------------------
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DevMgr.Table .EQ $1200 K.DEV.MAX*S.DEV.SIZE=32*16=512b
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*--------------------------------------
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* MemMgr : $1800->$1FFF MAIN/AUX (2 kBytes)
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*--------------------------------------
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MemMgr.Table .EQ $1800 Slot 0 is Reserved
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MemMgr.LoMem .EQ $1800
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MemMgr.Free .EQ $1802
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MemMgr.HiMem .EQ $1804
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MemMgr.LastSlot .EQ $1806
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*--------------------------------------
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MemMgr.MLoMem .EQ $2000
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MemMgr.MHiMem .EQ $BD00
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MemMgr.XLoMem .EQ $2000
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MemMgr.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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