A2osX/BIN/FORTH.S.HIS.txt
2021-06-05 17:48:54 +02:00

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NEW
AUTO 3,1
.LIST OFF
*--------------------------------------
HIS.Init >LDYAI HISTORY.MAX Get a buffer for History
>SYSCALL StrVNew
bcs .9
>STA.G HIS.hBuf
* >STZ.G HIS.Count
* >STA.G HIS.Index
* >STA.G HIS.LRU
.9 rts
*--------------------------------------
HIS.Add >LDA.G HIS.hBuf
beq .9
>LDA.G HIS.Count
cmp #HIS.MAX
bcc .2
>LDA.G HIS.LRU
cmp #HIS.MAX
bne .1
lda #0
.1 inc
>STA.G HIS.LRU
bra .7
.2 inc
>STA.G HIS.Count
.7 tax
>PUSHB.G HIS.hBuf
>PUSHBI 0
txa
>PUSHA
>PUSHW ZPCLBuf
>SYSCALL StrVSet
>STZ.G HIS.Index Reset Index
.9 rts
*--------------------------------------
HIS.Select >LDA.G HIS.Count
bne .10
clc
.99 rts
.10 jsr CL.Reset
>STZ.G HIS.Index
.1 >INC.G HIS.Index
jsr HIS.GetIndex
bcs .99
>PUSHW L.MSG.HIS
>LDA.G HIS.Index
dec
>PUSHA
>PUSHW ZPCLBuf
>PUSHBI 3
>SYSCALL PrintF
bcs .9
>LDA.G HIS.Index
>CMP.G HIS.Count
bne .1
>PUSHW L.MSG.HISPROMPT
>PUSHBI 0
>SYSCALL PrintF
>STZ.G HIS.Index
lda #0
sta (ZPCLBuf)
>SYSCALL GetChar
bcs HIS.Select.RTS
cmp #'0'
bcc .7
cmp #'9'+1
bcs .7
and #$f
inc
>STA.G HIS.Index
.7 >PUSHW L.MSG.HISROMPTCLR
>PUSHBI 0
>SYSCALL PrintF
jsr CL.PrintPrompt
bcc HIS.GetToCL1
.9
HIS.Select.RTS rts
*--------------------------------------
HIS.GetPrev >LDA.G HIS.Count
beq HIS.Select.RTS empty history,nothing to do
>LDA.G HIS.Index
bne .1
>LDA.G HIS.Count
bra HIS.GetToCL
.1 dec
bra HIS.GetToCl
*--------------------------------------
HIS.GetNext >LDA.G HIS.Count
beq HIS.Select.RTS empty history,nothing to do
>EOR.G HIS.Index
beq HIS.GetToCL
>LDA.G HIS.Index
inc
*--------------------------------------
HIS.GetToCl >STA.G HIS.Index
jsr CL.CLR
HIS.GetToCL1 >LDA.G HIS.Index
beq .9
jsr HIS.GetIndex
bcs .9
ldy #$ff
.1 iny
lda (ZPCLBuf),y
bne .1
tya
sta CL.Ptr
sta CL.Len
jmp CL.Print
.9 rts
*--------------------------------------
HIS.GetIndex >PUSHB.G HIS.hBuf
>PUSHBI 0
>PUSHB.G HIS.Index
>PUSHW ZPCLBuf
>SYSCALL StrVGet
rts
*--------------------------------------
MAN
SAVE usr/src/bin/forth.s.his
LOAD usr/src/bin/forth.s
ASM