325 lines
13 KiB
OpenEdge ABL
325 lines
13 KiB
OpenEdge ABL
; do *NOT* use register4 to register7 during time slicing
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inpLutAddr EQU register0
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inpKeyBak EQU register0
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inpVarsAddr EQU register1
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inpStrsAddr EQU register2
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inpTypesAddr EQU register3
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inpTextAddr EQU register8
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inpTextOfs EQU register9
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inpTypeData EQU register10
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inpPrnXYBak EQU register11
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inpCursXYBak EQU register12
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inpCursXYOfs EQU register13
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inpTextEnd EQU register14
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%SUB input
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; inputs numerics and text into vars
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input PUSH
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LDW inpLutAddr
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DEEK
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STW inpVarsAddr ; vars LUT address
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LDW inpLutAddr
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ADDI 2
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DEEK
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STW inpStrsAddr ; strings LUT address
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LDW inpLutAddr
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ADDI 4
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DEEK
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STW inpTypesAddr ; types LUT address
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LDWI ENABLE_SCROLL_MSK
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ANDW miscFlags
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STW miscFlags ; disable text scrolling
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LD giga_serialRaw
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ST serialRawPrev ; initialise previous keystroke
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LDWI inputExt1
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CALL giga_vAC ; doesn't return to here
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%ENDS
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%SUB inputExt1
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; input extended 1
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inputExt1 LDW inpTypesAddr
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DEEK
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BEQ inputE1_exit ; exit on LUT delimiter
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STW inpTypeData ; high byte is max string length, 8th and 7th bits of low byte are newlines, last 6 bits of low byte is type
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ANDI 0x40
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BEQ inputE1_print ; check for prefix newline
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LDWI inputNewline ; registers don't need to be saved yet
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CALL giga_vAC
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inputE1_print LDW inpStrsAddr
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DEEK
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STW textStr
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LDWI saveRegs
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CALL giga_vAC
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LDWI printText ; print strings LUT
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CALL giga_vAC
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LDWI loadRegs
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CALL giga_vAC
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LD inpTypeData
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ANDI 0x80
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BEQ inputE1_skip ; check for suffix newline
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LDWI inputNewline ; registers don't need to be saved yet
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CALL giga_vAC
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inputE1_skip LDWI textWorkArea + 1
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STW inpTextAddr ; text work area, treated as a string so skip length
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LDI 0
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STW inpTextOfs ; print text offset
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LDWI textWorkArea
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STW inpTextEnd ; print text end
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LD inpTypeData + 1
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ADDW inpTextEnd
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STW inpTextEnd ; text max = textWorkArea + (highByte(inpTypeData) >> 8)
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LDW cursorXY
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STW inpCursXYBak
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STW inpPrnXYBak
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LDWI inputExt2
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CALL giga_vAC ; doesn't return to here
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inputE1_exit LDI ENABLE_SCROLL_BIT
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ORW miscFlags
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STW miscFlags ; enable text scrolling
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POP
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RET
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%ENDS
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%SUB inputExt2
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; input extended 2
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inputExt2 LDWI saveRegs
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CALL giga_vAC
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LDI 127
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STW textChr
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LDWI inputCursor
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CALL giga_vAC
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LDWI loadRegs
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CALL giga_vAC
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LDWI inputKeys
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CALL giga_vAC
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BEQ inputExt2 ; loop until return key pressed
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INC inpVarsAddr
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INC inpVarsAddr
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INC inpStrsAddr
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INC inpStrsAddr
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INC inpTypesAddr
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INC inpTypesAddr
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LDWI inputExt1
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CALL giga_vAC ; doesn't return to here
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%ENDS
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%SUB inputCursor
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; draws cursor
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inputCursor PUSH
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LDW textChr
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XORI 127
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BNE inputC_skip ; don't flash cursor if char != 127
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LD giga_ledState
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ANDI 2
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BNE inputC_skip ; use ledState as a hack timer
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LDI 32
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STW textChr ; alternate between 32 and 127
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inputC_skip LDW inpCursXYBak
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STW cursorXY ; restore cursor position after the printChr
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LDWI printChr
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CALL giga_vAC
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POP
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RET
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%ENDS
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%SUB inputKeys
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; saves key press into string work area buffer
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inputKeys PUSH
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LD giga_serialRaw
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STW inpKeyBak ; save keystroke
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LD serialRawPrev
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SUBW inpKeyBak
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BEQ inputK_exit ; if keystroke hasn't changed exit
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LD inpKeyBak
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ST serialRawPrev ; save as previous keystroke
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SUBI 127
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BGT inputK_exit
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BNE inputK_ret
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LDWI inputDelete ; delete key
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CALL giga_vAC ; doesn't return to here
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inputK_ret LD inpKeyBak
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SUBI 10
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BNE inputK_char
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LDWI inputReturn ; return key
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CALL giga_vAC ; doesn't return to here
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inputK_char LDW inpTextEnd
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SUBW inpTextAddr
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BEQ inputK_exit ; text string bounds, (check after delete and return keys)
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LD inpKeyBak
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SUBI 32
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BLT inputK_exit
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LD inpKeyBak
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POKE inpTextAddr ; set char
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INC inpTextAddr
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LDI 0
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POKE inpTextAddr ; set new end of text string
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LD inpCursXYBak
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SUBI giga_xres - 11
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BLT inputK_advance ; cursor max bounds
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INC inpTextOfs
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LDI 0
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BRA inputK_print
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inputK_advance LDI 6
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inputK_print STW inpCursXYOfs ; advance cursor
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LDWI inputPrint
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CALL giga_vAC ; doesn't return to here
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inputK_exit LDI 0 ; keep looping on current var
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POP
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RET
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%ENDS
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%SUB inputIntVar
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inputIntVar PUSH
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LDWI textWorkArea + 1
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STW intSrcAddr ; src str address, (skip length)
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LDW inpVarsAddr
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DEEK
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STW register12 ; dst int address
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LDWI integerStr
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CALL giga_vAC
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DOKE register12 ; convert string to integer
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POP
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RET
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%ENDS
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%SUB inputStrVar
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inputStrVar LDWI textWorkArea
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STW register11 ; src str address
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LDW inpVarsAddr
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DEEK
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STW register12 ; dst var address
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inputS_copy LDW register11
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PEEK
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POKE register12
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INC register11
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INC register12
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BNE inputS_copy ; copy char until terminating char
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RET
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%ENDS
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%SUB inputReturn
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inputReturn LDWI saveRegs
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CALL giga_vAC
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LDI 32
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STW textChr
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LDWI inputCursor
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CALL giga_vAC
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LDWI loadRegs
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CALL giga_vAC
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LDWI textWorkArea
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STW register0
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LDW inpTextAddr
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SUBW register0
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SUBI 1
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POKE register0 ; text length
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ADDW register0
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ADDI 1
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STW register0
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LDI 0
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POKE register0 ; text delimiter
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LD inpTypeData ; check var tye
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ANDI 0x3F ; var type is bottom 6 bits
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SUBI 5 ; var is string or integer?
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BNE inputR_int
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LDWI inputStrVar
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CALL giga_vAC ; copy string
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BRA inputR_exit
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inputR_int LDWI inputIntVar
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CALL giga_vAC ; convert numeric
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inputR_exit LDI 1 ; return key pressed, next var
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POP
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RET
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%ENDS
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%SUB inputDelete
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inputDelete LD inpTextOfs
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BEQ inputD_bounds
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SUBI 1
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STW inpTextOfs ; decrement print text offset
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LDI 0
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STW inpCursXYOfs ; stationary cursor
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LDI 0
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POKE inpTextAddr ; delimiter
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LDW inpTextAddr
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SUBI 1
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STW inpTextAddr ; decrement text pointer
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LDI 32
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POKE inpTextAddr ; delete char
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BRA inputD_print
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inputD_bounds LDW inpPrnXYBak
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SUBW inpCursXYBak
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BGE inputD_exit ; cursor min bounds
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LDWI -6
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STW inpCursXYOfs ; retreat cursor
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LDI 32
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POKE inpTextAddr ; delete cursor
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INC inpTextAddr
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LDI 0
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POKE inpTextAddr ; delimiter
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LDW inpTextAddr
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SUBI 2
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STW inpTextAddr ; decrement text pointer
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LDI 32
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POKE inpTextAddr ; delete char
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inputD_print LDWI inputPrint
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CALL giga_vAC ; doesn't return to here
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inputD_exit LDI 0 ; keep looping on current var
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POP
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RET
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%ENDS
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%SUB inputPrint
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inputPrint LDWI textWorkArea
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ADDW inpTextOfs
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STW textStr
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LDW inpPrnXYBak
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STW cursorXY ; restore cursor position after the printText
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LDWI saveRegs
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CALL giga_vAC
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LDWI printText
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CALL giga_vAC
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LDWI loadRegs
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CALL giga_vAC
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LDW inpCursXYBak ; new cursor position
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ADDW inpCursXYOfs
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STW inpCursXYBak
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LDI 0 ; keep looping on current var
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POP
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RET
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%ENDS
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%SUB inputNewline
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inputNewline PUSH
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LDI ENABLE_SCROLL_BIT
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ORW miscFlags
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STW miscFlags ; enable text scrolling
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LDWI newLineScroll
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CALL giga_vAC ; new line
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LDWI ENABLE_SCROLL_MSK
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ANDW miscFlags
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STW miscFlags ; disable text scrolling
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POP
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RET
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%ENDS
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