A2osX/INC/KERNEL.I.txt

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PR#3
PREFIX /A2OSX.BUILD
LOMEM $900
INC 1
AUTO 6
.LIST OFF
*--------------------------------------
* KERNEL CONSTANTS DEFINITON
*--------------------------------------
K.ENV.SIZE .EQ 256
K.FLT.MAX .EQ 4
K.EVT.MAX .EQ 8
K.DEV.MAX .EQ 32
K.PS.MAX .EQ 32
*--------------------------------------
* Kernel ZP Aux
*--------------------------------------
ZPKERNEL .EQ $0
ZPPtr1 .EQ ZPKERNEL
ZPPtr2 .EQ ZPKERNEL+2
ZPPtr3 .EQ ZPKERNEL+4
ZPPtr4 .EQ ZPKERNEL+6
*--------------------------------------
ZPMEMMGR .EQ $8
*--------------------------------------
*--------------------------------------
* $42-$47 ProDOS Block Device Drivers Main
* $5E-$C8 RESERVED APPLESOFT Main/Aux (ROM Call, no need to switch back MainZP)
*--------------------------------------
* Memory Map
*--------------------------------------
A2osX.SaveSM .EQ $100 Aux
A2osX.SaveSX .EQ $101 Aux
*--------------------------------------
* Main $200 -> 2FF : (Used By ProDOS,Clock DRV....)
* Main $300 -> 3EF : <free>
* Main $3F0 -> 3FF : SYS Vectors (reset,IRQ...)
* Aux $200 -> 3FD : /RAM Driver
* Aux $3FE -> 3FF : IRQ Vector
*--------------------------------------
K.S.STAT .EQ $0300 S.STAT for internal kernel operations
K.S.DEVSTAT .EQ $0340 S.DEVSTAT=25 or higher depends on dev type
K.SP.PARAMS .EQ $0380 Max 9 bytes
K.MLI.PARAMS .EQ $0390 Main, 18 bytes min for GetFileInfo (ATLK needs MORE!!!...32 max for now)
K.MLI.PATH .EQ $03B0 64+1 -> $03D0
*--------------------------------------
*** $3F0-$3FF IRQ Handler.... ***
*--------------------------------------
* Main/Aux $400 -> $7FF : Console Screen
* Main/Aux $800 -> $BFF : System Screen
*--------------------------------------
PS.Table.PID .EQ $0C00 K.PS.MAX
PS.Table.hMem .EQ $0C00+K.PS.MAX
K.Buf256 .EQ $0E00 Main
*--------------------------------------
K.STACKTOP .EQ $0F20 down to $0f00
*--------------------------------------
*** Z80 Reserved $0F00-10FF***
*--------------------------------------
Z80STACK .EQ $0FFF (0FFFFh) Down to $0F20
Z80JMP .EQ $1000 (00000h) Up To $10FF
*--------------------------------------
FltMgr.Table .EQ $1100 K.FLT.MAX*S.FLT.SIZE=8*32=128b
*--------------------------------------
EvtMgr.Table .EQ $1180 K.EVT.MAX*S.EVT.SIZE=16*8=128b
*--------------------------------------
DevMgr.Table .EQ $1200 K.DEV.MAX*S.DEV.SIZE=32*16=512b
*--------------------------------------
* MemMgr : $1800->$1FFF MAIN/AUX (2 kBytes)
*--------------------------------------
MemMgr.Table .EQ $1800 Slot 0 is Reserved
MemMgr.LoMem .EQ $1800
MemMgr.Free .EQ $1802
MemMgr.HiMem .EQ $1804
MemMgr.LastSlot .EQ $1806
*--------------------------------------
MemMgr.MLoMem .EQ $2000
MemMgr.MHiMem .EQ $BD00
MemMgr.XLoMem .EQ $2000
MemMgr.XHiMem .EQ $C000
*--------------------------------------
DevMgr.HiMem .EQ $FFFA Protect IRQ vectors in Aux LC
*--------------------------------------
MAN
SAVE /A2OSX.BUILD/INC/KERNEL.I
LOAD /A2OSX.SRC/SYS/KERNEL.S
ASM