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93 lines
1.6 KiB
Plaintext
93 lines
1.6 KiB
Plaintext
NEW
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AUTO 3,1
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.LIST OFF
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*--------------------------------------
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HIS.Init clc
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rts
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>LDYAI HISTORY.MAX Get a buffer for History
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>SYSCALL StrVNew
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bcs .9
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txa
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>STA.G HIS.hBuf
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>STZ.G HIS.Count
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>STA.G HIS.Index
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.9 rts
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*--------------------------------------
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HIS.Add >LDA.G HIS.hBuf
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beq .9
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>PUSHA
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>PUSHW ZPCLBuf
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>SYSCALL StrVSet
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bcc .1
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>PUSHB.G HIS.hBuf
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>PUSHWZ
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>SYSCALL StrVSet
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>DEC.G HIS.Count
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bra HIS.Add
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.1 >STZ.G HIS.Index Reset Index
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>INC.G HIS.Count
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.9
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HIS.Add.RTS rts
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*--------------------------------------
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HIS.GetPrev >LDA.G HIS.hBuf
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beq HIS.Add.RTS
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>LDA.G HIS.Count
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beq HIS.Add.RTS empty history,nothing to do
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>LDA.G HIS.Index
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bne .1
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>LDA.G HIS.Count
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.1 dec
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bra HIS.GetToCl
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*--------------------------------------
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HIS.GetNext >LDA.G HIS.hBuf
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beq HIS.Add.RTS
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>LDA.G HIS.Count
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beq HIS.Add.RTS empty history,nothing to do
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>LDA.G HIS.Index
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inc
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>CMP.G HIS.Count
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bne HIS.GetToCl
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lda #0
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>STA.G HIS.Index
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jmp CL.CLR
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*--------------------------------------
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HIS.GetToCl >STA.G HIS.Index
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jsr CL.CLR
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>PUSHB.G HIS.hBuf
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>PUSHBI 0
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>PUSHB.G HIS.Index
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>PUSHW ZPCLBuf
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>SYSCALL StrVGet
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ldy #$ff
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.1 iny
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lda (ZPCLBuf),y
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bne .1
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tya
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sta CL.Ptr
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sta CL.Len
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jmp CL.PrintCLBuf
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*--------------------------------------
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MAN
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SAVE usr/src/bin/forth.s.his
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LOAD usr/src/bin/forth.s
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ASM
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