mirror of
https://github.com/A2osX/A2osX.git
synced 2024-07-06 12:29:02 +00:00
111 lines
2.1 KiB
Plaintext
111 lines
2.1 KiB
Plaintext
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NEW
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AUTO 3,1
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*--------------------------------------
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ZPBLISTXIBlkPtr .EQ ZPMEMMGR+12
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ZPBLISTXDBlkPtr .EQ ZPMEMMGR+14
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*--------------------------------------
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BLISTX.BytePtr .BS 1
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BLISTX.BlockPtr .BS 1
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*--------------------------------------
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BLISTX.New >LDYAI 128 32k Max before out of memory!!!
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ldx #S.MEM.F.INIT0+8 index
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jsr MEM.GetMem.YAX
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bcs .9
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>STYA ZPBLISTXIBlkPtr
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stx .8+1
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>LDYAI 256
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ldx #4 data
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jsr MEM.GetMem.YAX
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bcs .9
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>STYA ZPBLISTXDBlkPtr
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lda #0
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sta (ZPBLISTXDBlkPtr)
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txa
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sta (ZPBLISTXIBlkPtr)
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.8 lda #$ff SELF MODIFIED
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.9 rts
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*--------------------------------------
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BLISTX.Free pha
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jsr K.GetMemPtr
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>STYA .1+1
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ldx #0
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.1 lda $ffff,x SELF MODIFIED
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beq .8
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jsr K.FreeMem
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inx
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bra .1
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.8 pla
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jmp K.FreeMem
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*--------------------------------------
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BLISTX.GetNextByte
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ldy BLISTX.BytePtr
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lda (ZPBLISTXDBlkPtr),y
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BLISTX.ToNextByte
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inc BLISTX.BytePtr
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bne .8
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pha
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jsr BLISTX.ToNextBlock
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pla
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.8 rts
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*--------------------------------------
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BLISTX.AddDataByte
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phy
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ldy BLISTX.BytePtr
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sta (ZPBLISTXDBlkPtr),y
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inc BLISTX.BytePtr
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bne .8
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phx
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>LDYAI 256
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ldx #4
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jsr MEM.GetMem.YAX
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bcs .9
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>STYA ZPBLISTXDBlkPtr
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txa
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inc BLISTX.BlockPtr
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ldy BLISTX.BlockPtr
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sta (ZPBLISTXIBlkPtr),y
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* stz BLISTX.BytePtr
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plx
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.8 ply
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clc
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rts
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.9 plx
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ply
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rts
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*--------------------------------------
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BLISTX.SetBlockByte
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ldy BLISTX.BytePtr
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sta (ZPBLISTXDBlkPtr),y
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inc BLISTX.BytePtr
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bne BLISTX.ToNextBlock.RTS
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*--------------------------------------
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BLISTX.ToNextBlock
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inc BLISTX.BlockPtr
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ldy BLISTX.BlockPtr
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lda (ZPBLISTXIBlkPtr),y
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jsr K.GetMemPtr
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>STYA ZPBLISTXDBlkPtr
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BLISTX.ToNextBlock.RTS
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rts
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*--------------------------------------
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MAN
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SAVE usr/src/sys/kernel.s.blistx
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LOAD usr/src/sys/kernel.s
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ASM
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