mirror of
https://github.com/byteworksinc/ORCA-C.git
synced 2024-11-10 05:09:48 +00:00
1066 lines
29 KiB
NASM
1066 lines
29 KiB
NASM
mcopy scanner.macros
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datachk off
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****************************************************************
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*
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* ConvertHexFloat - Parse a hexadecimal floating-point constant
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*
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* Inputs:
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* str - pointer to the string (p-string)
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*
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* Outputs:
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* Returns the extended value (or a NAN on error).
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*
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****************************************************************
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*
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ConvertHexFloat start scanner
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subroutine (4:str),26
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end_idx equ 0 index one past end of string
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got_period equ end_idx+2 flag: have we encountered a period?
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full equ got_period+2 flag: is mantissa full?
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mantissa equ full+2 mantissa
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extrabits equ mantissa+8 extra bits that do not fit in mantissa
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exp_adjust equ extrabits+2 exponent adjustment
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negate_exp equ exp_adjust+2 flag: is exponent negative?
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exp equ negate_exp+2 exponent
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nonzero equ exp+2 flag: is mantissa non-zero?
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got_digit equ nonzero+2 flag: got any digit yet?
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stz got_period no period yet
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stz full not full yet
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stz negate_exp assume positive exponent
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stz got_digit no digit yet
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stz exp exponent value = 0
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stz mantissa mantissa = 0.0
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stz mantissa+2
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stz mantissa+4
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stz mantissa+6
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stz extrabits extrabits = 0
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lda #63 exponent adjustment = 63
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sta exp_adjust
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lda [str] end_idx = string length + 1
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and #$00FF
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inc a
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sta end_idx
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ldy #1 string index = 1
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jsr nextch check for 0x or 0X prefix
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cmp #'0'
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beq check_x
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brl error
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check_x jsr nextch
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and #$df
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cmp #'X'
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beq digitlp
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brl error
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digitlp jsr nextch get a character
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ldx got_period if there was no period yet
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bne check_p
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cmp #'.' if character is '.'
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bne check_p
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dec got_period flag that we got a period
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bra digitlp loop for another digit
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check_p cmp #'p' if character is 'p' or 'P'
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beq normal mantissa is done: normalize it
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cmp #'P'
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beq normal
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sta got_digit flag that we (presumably) got a digit
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jsr hexdigit must be a hex digit: get value
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ldx full if mantissa is full
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beq donibble
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ora extrabits record extra bits for rounding
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sta extrabits
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lda got_period if we are not past the period
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bne digitlp
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lda #4 exp_adjust += 4
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clc
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adc exp_adjust
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; bvs error no overflow with p-string input
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sta exp_adjust
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bra digitlp loop for another digit
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donibble xba get nibble value in high bits
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asl a
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asl a
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asl a
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asl a
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ldx #4 for each bit in nibble:
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bitloop bit mantissa+6 if mantissa is now full
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bpl notfull
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inc full full = true
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sta extrabits record next bit(s) for rounding
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lda got_period if we are not past the period
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bne digitlp
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txa exp_adjust += number of extra bits
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clc
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adc exp_adjust
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sta exp_adjust
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bra digitlp loop for another digit
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notfull asl a shift bit into mantissa
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rol mantissa
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rol mantissa+2
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rol mantissa+4
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rol mantissa+6
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bit got_period if we are past the period
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bpl nextbit
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dec exp_adjust exp_adjust-- (no overflow w/ p-str)
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nextbit dex
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bne bitloop
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bra digitlp
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normal lda got_digit check that there was a mantissa digit
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bne chkzero
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brl error
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chkzero lda mantissa check if mantissa is nonzero
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ora mantissa+2
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ora mantissa+4
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ora mantissa+6
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sta nonzero set nonzero flag as appropriate
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beq do_exp if mantissa is nonzero, normalize:
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lda mantissa+6 if high bit of mantissa is not 1:
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bmi do_exp do
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normallp dec exp_adjust exp_adjust--
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asl mantissa shift mantissa left one bit
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rol mantissa+2
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rol mantissa+4
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rol mantissa+6
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bpl normallp while high bit of mantissa is not 1
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do_exp jsr nextch get next character
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cmp #'+' if it is '+'
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bne chkminus
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jsr nextch ignore it and get next char
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bra exploop
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chkminus cmp #'-' else if it is '-'
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bne exploop
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jsr nextch get next character
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inc negate_exp flag that exponent is negative
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exploop jsr decdigit for each exponent digit
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asl exp exp = exp*10 + digit
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pei exp
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bcs bigexp
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bmi bigexp
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asl exp
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asl exp
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bcs bigexp
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bmi bigexp
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adc 1,s
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bvs bigexp
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clc
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adc exp
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bvs bigexp
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sta exp
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pla
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jsr nextch
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bpl exploop
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bra neg_exp
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bigexp pla
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lda #$7fff if exponent value overflows
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sta exp exp = INT_MAX
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bigexplp jsr nextch
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bpl bigexplp
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neg_exp lda negate_exp if exponent is negative
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beq finalexp
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lda exp negate exp
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eor #$ffff
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inc a
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sta exp
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finalexp lda exp add in exponent adjustment
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clc
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adc exp_adjust
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bvc expdone if addition overflows
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lda #$7fff positive exponent -> INT_MAX
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ldx negate_exp
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beq expdone
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inc a negative exponent -> INT_MIN
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expdone ldx nonzero if value is zero
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bne bias
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txa exponent field = 0
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bra storeexp
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bias clc else
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adc #16383 compute biased exp. [-16385..49150]
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storeexp sta exp
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cmp #32767 if it is [0..32766], it is valid
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blt round
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cmp #32767+16383+1 if it is larger, generate an infinity
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blt inf otherwise, denormalize:
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denormlp lsr mantissa+6 while biased exponent is negative:
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ror mantissa+4 shift mantissa left one bit
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ror mantissa+2
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ror mantissa
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ror extrabits adjust extrabits
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bcc dn_next
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lda extrabits
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ora #1
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sta extrabits
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dn_next inc exp exp++
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bmi denormlp
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round lda extrabits implement SANE/IEEE round-to-nearest:
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cmp #$8000 if less than halfway to next number
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blt done return value as-is
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bne roundup if more than halfway to next: round up
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lda mantissa if exactly halfway to next number
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lsr a if least significant bit is 0
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bcc done return value as-is
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roundup inc mantissa otherwise, round up to next number:
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bne done increment mantissa
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inc mantissa+2
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bne done
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inc mantissa+4
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bne done
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inc mantissa+6
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bne done
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lda #$8000 if mantissa overflowed:
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sta mantissa+6 mantissa = 1.0
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inc exp exp++ (could generate an infinity)
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done jsr nextch if we have not consumed the full input
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bpl error flag an error
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lda mantissa done: store return value
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sta >retval
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lda mantissa+2
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sta >retval+2
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lda mantissa+4
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sta >retval+4
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lda mantissa+6
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sta >retval+6
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lda exp
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sta >retval+8
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bra ret
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inf lda #32767 infinity: exponent field = 32767
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sta >retval+8 mantissa = 1.0
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inc a
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sta >retval+6
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asl a
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sta >retval+4
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sta >retval+2
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sta >retval+0
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bra ret
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error lda #32767 bad input: return NANASCBIN
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sta >retval+8
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lda #$C011
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sta >retval+6
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lda #0
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sta >retval+4
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sta >retval+2
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sta >retval
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ret lda #retval
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sta str
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lda #^retval
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sta str+2
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return 4:str
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;get next character of string, or -1 if none (nz flags also set based on value)
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nextch cpy end_idx
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bge no_ch
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lda [str],y
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iny
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and #$00FF
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rts
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no_ch lda #-1
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rts
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;get value of A, taken as a hex digit
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;branches to error if it is not a valid digit
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hexdigit cmp #'0'
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blt baddigit
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cmp #'9'+1
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bge letter
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and #$000F
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rts
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letter and #$df
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cmp #'A'
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blt baddigit
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cmp #'F'+1
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bge baddigit
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and #$000F
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adc #9
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rts
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;get value of A, taken as a decimal digit
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;branches to error if it is not a valid digit
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decdigit cmp #'0'
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blt baddigit
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cmp #'9'+1
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bge baddigit
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and #$000F
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rts
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baddigit pla
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brl error
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retval ds 10
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end
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****************************************************************
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*
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* Convertsl - Convert a string to a long integer
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*
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* Inputs:
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* str - pointer to the string
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*
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* Outputs:
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* Returns the value.
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*
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* Notes:
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* Assumes the string is valid.
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*
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****************************************************************
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*
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Convertsl start scanner
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val equ 0 return value
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subroutine (4:str),4
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stz val initialize the number to zero
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stz val+2
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lda [str] set X to the number of characters
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and #$00FF
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tax
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ldy #1 Y is the disp into the string
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lb1 asl val val := val*10
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rol val+2
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ph2 val+2
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lda val
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asl val
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rol val+2
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asl val
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rol val+2
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adc val
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sta val
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pla
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adc val+2
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sta val+2
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lda [str],Y add in the new digit
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and #$000F
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adc val
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sta val
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bcc lb2
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inc val+2
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lb2 iny next character
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dex
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bne lb1
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return 4:val
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end
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****************************************************************
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*
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* Convertsll - Convert a string to a long long integer
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*
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* Inputs:
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* qval - pointer to location to save value
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* str - pointer to the string
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*
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* Outputs:
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* Saves the value to [qval].
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*
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* Notes:
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* Assumes the string is valid.
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*
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****************************************************************
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*
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Convertsll start scanner
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disp equ 0 displacement into the string
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count equ 2 number of characters remaining to read
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subroutine (4:qval,4:str),4
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lda [str] set count to length of string
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and #$00FF
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sta count
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lda #1 start reading from character 1
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sta disp
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ph8 #0 initialize the number to zero
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bra lb1a
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lb1 ph8 #10 multiply by 10
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jsl ~UMUL8
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lb1a pea $0000
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pea $0000
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pea $0000
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ldy disp
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lda [str],Y add in the new digit
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and #$000F
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pha
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jsl ~ADD8
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lb2 inc disp next character
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dec count
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bne lb1
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pl8 [qval] save the value
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return
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end
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****************************************************************
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*
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* KeyPress - Has a key been pressed?
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*
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* If a key has not been pressed, this function returns
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* false. If a key has been pressed, it clears the key
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* strobe. If the key was an open-apple ., a terminal exit
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* is performed; otherwise, the function returns true.
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*
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****************************************************************
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*
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KeyPress start scanner
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KeyPressGS kpRec
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lda >kpAvailable
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beq rts
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ReadKeyGS rkRec
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lda >rkKey
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cmp #'.'
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bne lb1
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lda >rkModifiers
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and #$0100
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beq lb1
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ph2 #4
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jsl TermError
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lb1 lda #1
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rts rtl
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kpRec dc i'3'
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kpKey ds 2
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kpModifiers ds 2
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kpAvailable ds 2
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rkRec dc i'2'
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rkKey ds 2
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rkModifiers ds 2
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end
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****************************************************************
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*
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* NextCh - Read the next character from the file, skipping comments
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*
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* Outputs:
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* ch - character read
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* currentChPtr - pointer to ch in source file
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*
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****************************************************************
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*
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NextCh start scanner
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eofChar equ 0 end of file character
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eolChar equ 13 end of line character
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stackFrameSize equ 14 size of the work space
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maxPath equ 255 max length of a path name
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fp equ 1 file record pointer; work pointer
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p1 equ 5 work pointer
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p2 equ 9
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cch equ 13
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enum (illegal,ch_special,ch_dash,ch_plus,ch_lt,ch_gt,ch_eq,ch_exc),0
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enum (ch_and,ch_bar,ch_dot,ch_white,ch_eol,ch_eof,ch_char,ch_string)
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enum (ch_asterisk,ch_slash,ch_percent,ch_carot,ch_pound,ch_colon)
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enum (ch_backslash,ch_other,letter,digit)
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! begin {NextCh}
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tsc create stack frame
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sec
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sbc #stackFrameSize
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tcs
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phd
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tcd
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! {flag for preprocessor check}
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! if lastWasReturn then
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! lastWasReturn := charKinds[ord(ch)] in [ch_eol,ch_white]
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! else
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! lastWasReturn := charKinds[ord(ch)] = ch_eol;
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lda ch
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asl A
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tax
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lda charKinds,X
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ldy #1
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cmp #ch_eol
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beq pf2
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ldx lastWasReturn
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beq pf1
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cmp #ch_white
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beq pf2
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pf1 dey
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pf2 sty lastWasReturn
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! 1:
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lab1 anop
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! currentChPtr := chPtr;
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! if chPtr = eofPtr then begin {flag end of file if we're there}
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lda chPtr
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sta currentChPtr
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ldx chPtr+2
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stx currentChPtr+2
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cmp eofPtr
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bne la1
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cpx eofPtr+2
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beq la2
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la1 brl lb5
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la2 anop
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! if not lastWasReturn then begin
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! lastWasReturn := true;
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! needWriteLine := true;
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! ch := chr(eolChar);
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! goto le2;
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! end; {if}
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lda lastWasReturn
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bne la3
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lda #1
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sta lastWasReturn
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sta needWriteLine
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lda #eolChar
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sta ch
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brl le2
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! CheckConditionals;
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la3 jsl CheckConditionals
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! ch := chr(eofChar);
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stz ch
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! if needWriteLine then begin {do eol processing}
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! WriteLine;
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! wroteLine := false;
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! lineNumber := lineNumber+1;
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! firstPtr := chPtr;
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! end; {if}
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lda needWriteLine
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beq lb1
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jsl WriteLine
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stz wroteLine
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inc4 lineNumber
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move4 chPtr,firstPtr
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lb1 anop
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! if fileList = nil then begin
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lda fileList
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ora fileList+2
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bne lb3
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lb2 anop
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! skipping := false;
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sta skipping
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! end {if}
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brl le2
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! else begin
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lb3 anop
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! if not doingFakeFile then begin
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lda doingFakeFile
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bne lb3a
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! {purge the current source file}
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! with ffDCBGS do begin
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! pCount := 5;
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lda #5
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sta ffDCBGS
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! action := 7;
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lda #7
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sta ffDCBGS+2
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! name := @includeFileGS.theString
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lla ffDCBGS+12,includeFileGS+2
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! end; {with}
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! FastFileGS(ffDCBGS);
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FastFileGS ffDCBGS
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! end; {if}
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lb3a anop
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! doingFakeFile := false;
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stz doingFakeFile
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! fp := fileList; {open the file that included this one}
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move4 fileList,fp
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! fileList := fp^.next;
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ldy #2
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lda [fp]
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sta fileList
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lda [fp],Y
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sta fileList+2
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! includeFileGS := fp^.name;
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! sourceFileGS := fp^.sname;
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add4 fp,#4,p1
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add4 fp,#4+maxPath+4,p2
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short M
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ldy #maxPath+3
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lb4 lda [p1],Y
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sta includeFileGS,Y
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lda [p2],Y
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sta sourceFileGS,Y
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dey
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bpl lb4
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long M
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! changedSourceFile := true;
|
|
lda #1
|
|
sta changedSourceFile
|
|
! lineNumber := fp^.lineNumber;
|
|
ldy #4+maxPath+4+maxPath+4
|
|
lda [fp],Y
|
|
sta lineNumber
|
|
iny
|
|
iny
|
|
lda [fp],Y
|
|
sta lineNumber+2
|
|
! ReadFile;
|
|
jsl ReadFile
|
|
! eofPtr := pointer(ord4(bofPtr) + ffDCBGS.fileLength);
|
|
add4 bofPtr,ffDCBGS+46,eofPtr
|
|
! chPtr := pointer(ord4(bofPtr) + fp^.disp);
|
|
! includeChPtr := chPtr;
|
|
! firstPtr := chPtr;
|
|
ldy #4+maxPath+4+maxPath+4+4
|
|
clc
|
|
lda bofPtr
|
|
adc [fp],Y
|
|
sta chPtr
|
|
sta firstPtr
|
|
sta includeChPtr
|
|
lda bofPtr+2
|
|
iny
|
|
iny
|
|
adc [fp],Y
|
|
sta chPtr+2
|
|
sta firstPtr+2
|
|
sta includeChPtr+2
|
|
! needWriteLine := false;
|
|
stz needWriteLine
|
|
! dispose(fp);
|
|
ph4 fp
|
|
jsl ~Dispose
|
|
! includeCount := includeCount + 1;
|
|
inc includeCount
|
|
! if inhibitHeader then
|
|
lda inhibitHeader
|
|
beq lb4a
|
|
! TermHeader;
|
|
jsl TermHeader
|
|
! goto 1;
|
|
lb4a brl lab1
|
|
! end; {if}
|
|
! end {if}
|
|
|
|
! else begin
|
|
lb5 anop
|
|
! ch := chr(chPtr^); {fetch the character}
|
|
sta p1
|
|
stx p1+2
|
|
lda [p1]
|
|
and #$00FF
|
|
sta ch
|
|
|
|
! if needWriteLine then begin {do eol processing}
|
|
! WriteLine;
|
|
! wroteLine := false;
|
|
! lineNumber := lineNumber+1;
|
|
! firstPtr := chPtr;
|
|
! end; {if}
|
|
lda needWriteLine
|
|
beq lb6
|
|
jsl WriteLine
|
|
stz wroteLine
|
|
inc4 lineNumber
|
|
move4 chPtr,firstPtr
|
|
lb6 anop
|
|
! needWriteLine := charKinds[ord(ch)] = ch_eol;
|
|
stz needWriteLine
|
|
lda ch
|
|
asl A
|
|
tax
|
|
lda charKinds,X
|
|
cmp #ch_eol
|
|
bne lb7
|
|
inc needWriteLine
|
|
lb7 anop
|
|
! chPtr := pointer(ord4(chPtr) + 1);
|
|
inc4 chPtr
|
|
! 2: if (ch = '\') and (charKinds[chPtr^] = ch_eol) then begin
|
|
! chPtr := pointer(ord4(chPtr) + 1);
|
|
! DebugCheck;
|
|
! needWriteLine := true;
|
|
! goto 1;
|
|
! end; {if}
|
|
lab2 lda ch
|
|
cmp #'\'
|
|
bne lb8
|
|
move4 chPtr,p1
|
|
lda [p1]
|
|
and #$00FF
|
|
asl A
|
|
tax
|
|
lda charKinds,X
|
|
cmp #ch_eol
|
|
bne lb8
|
|
inc4 chPtr
|
|
jsr DebugCheck
|
|
lda #1
|
|
sta needWriteLine
|
|
brl lab1
|
|
lb8 anop
|
|
! {check for debugger code}
|
|
! if needWriteLine then
|
|
! DebugCheck;
|
|
lda needWriteLine
|
|
beq lb9
|
|
jsr DebugCheck
|
|
lb9 anop
|
|
!
|
|
! {if it's a comment, skip the comment }
|
|
! {characters and return a space. }
|
|
! if (not doingStringOrCharacter) and (ch = '/') and (chPtr <> eofPtr)
|
|
! and ((chr(chPtr^) = '*')
|
|
! or ((chr(chPtr^) = '/') and allowSlashSlashComments))then begin
|
|
lda doingStringOrCharacter
|
|
jne lc6
|
|
lda ch
|
|
cmp #'/'
|
|
jne lc7
|
|
lda chPtr
|
|
cmp eofPtr
|
|
bne lc1
|
|
lda chPtr+2
|
|
cmp eofPtr+2
|
|
jeq lc6
|
|
lc1 move4 chPtr,p1
|
|
lda [p1]
|
|
and #$00FF
|
|
cmp #'*'
|
|
beq lc1a
|
|
cmp #'/'
|
|
jne lc6
|
|
ldx allowSlashSlashComments
|
|
jeq lc6
|
|
! cch := chr(chPtr^);
|
|
lc1a sta cch
|
|
! chPtr := pointer(ord4(chPtr)+1); {skip the '*' or '/'}
|
|
inc4 chPtr
|
|
! done := false;
|
|
! repeat
|
|
lc2 anop
|
|
! if chPtr = eofPtr then {if at eof, we're done}
|
|
! done := true
|
|
lda chPtr
|
|
cmp eofPtr
|
|
bne lc2a
|
|
lda chPtr+2
|
|
cmp eofPtr+2
|
|
jeq lc5
|
|
! else if (cch = '/') then begin
|
|
lc2a lda cch
|
|
cmp #'/'
|
|
bne lc2b
|
|
! if (charKinds[ord(chPtr^)] = ch_eol)
|
|
! and (ptr(ord4(chPtr)-1)^ <> '\')
|
|
! and ((ptr(ord4(chPtr)-1)^ <> '/')
|
|
! or (ptr(ord4(chPtr)-2)^ <> '?')
|
|
! or (ptr(ord4(chPtr)-3)^ <> '?'))
|
|
! then
|
|
! done := true
|
|
! else
|
|
! chPtr := pointer(ord4(chPtr)+1);
|
|
move4 chPtr,p1
|
|
lda [p1]
|
|
and #$00FF
|
|
asl A
|
|
tax
|
|
lda charKinds,X
|
|
cmp #ch_eol
|
|
bne lc2aa
|
|
dec4 p1
|
|
lda [p1]
|
|
and #$00FF
|
|
cmp #'\'
|
|
beq lc2aa
|
|
cmp #'/'
|
|
jne lc5
|
|
sub4 p1,#2
|
|
lda [p1]
|
|
cmp #'??'
|
|
jne lc5
|
|
lc2aa inc4 chPtr
|
|
bra lc2
|
|
! end {else if}
|
|
! else begin
|
|
! ch := chr(chPtr^); {check for terminating */}
|
|
lc2b move4 chPtr,p1
|
|
lda [p1]
|
|
and #$00FF
|
|
sta ch
|
|
! if charKinds[ord(ch)] = ch_eol then begin
|
|
! WriteLine;
|
|
! wroteLine := false;
|
|
! lineNumber := lineNumber+1;
|
|
! firstPtr := pointer(ord4(chPtr)+1);
|
|
! end; {if}
|
|
asl A
|
|
tax
|
|
lda charKinds,X
|
|
cmp #ch_eol
|
|
bne lc3
|
|
jsl WriteLine
|
|
stz wroteLine
|
|
inc4 lineNumber
|
|
add4 chPtr,#1,firstPtr
|
|
lc3 anop
|
|
! chPtr := pointer(ord4(chPtr)+1);
|
|
inc4 chPtr
|
|
! if ch = '*' then
|
|
! if (chr(chPtr^) = '/') and (chPtr <> eofPtr) then begin
|
|
! chPtr := pointer(ord4(chPtr)+1);
|
|
! done := true;
|
|
! end; {if}
|
|
lda ch
|
|
cmp #'*'
|
|
jne lc2
|
|
lda chPtr
|
|
cmp eofPtr
|
|
bne lc4
|
|
lda chPtr+2
|
|
cmp eofPtr+2
|
|
jeq lc2
|
|
lc4 move4 chPtr,p1
|
|
lda [p1]
|
|
and #$00FF
|
|
cmp #'/'
|
|
jne lc2
|
|
inc4 chPtr
|
|
! end; {else}
|
|
! until done;
|
|
lc5 anop
|
|
! {return a space as the result}
|
|
! ch := ' ';
|
|
lda #' '
|
|
sta ch
|
|
! end {if}
|
|
brl le2
|
|
! else if (ch = '?') and (chPtr <> eofPtr) and (chr(chPtr^) = '?') then begin
|
|
lc6 lda ch
|
|
lc7 cmp #'?'
|
|
jne le2
|
|
lda chPtr
|
|
cmp eofPtr
|
|
bne lc8
|
|
lda chPtr+2
|
|
cmp eofPtr+2
|
|
jeq le2
|
|
lc8 move4 chPtr,p1
|
|
lda [p1]
|
|
and #$00FF
|
|
cmp #'?'
|
|
jne le2
|
|
! chPtr2 := pointer(ord4(chPtr) + 1);
|
|
inc4 p1
|
|
! if (chPtr2 <> eofPtr)
|
|
lda p1
|
|
cmp eofPtr
|
|
bne ld1
|
|
lda p1+2
|
|
cmp eofPtr+2
|
|
beq le2
|
|
ld1 anop
|
|
! and (chr(chPtr2^) in ['(','<','/','''','=',')','>','!','-']) then begin
|
|
! case chr(chPtr2^) of
|
|
! '(': ch := '[';
|
|
lda [p1]
|
|
and #$00FF
|
|
cmp #'('
|
|
bne ld2
|
|
lda #'['
|
|
bra le1
|
|
! '<': ch := '{';
|
|
ld2 cmp #'<'
|
|
bne ld3
|
|
lda #'{'
|
|
bra le1
|
|
! '/': ch := '\';
|
|
ld3 cmp #'/'
|
|
bne ld4
|
|
lda #'\'
|
|
bra le1
|
|
! '''': ch := '^';
|
|
ld4 cmp #''''
|
|
bne ld5
|
|
lda #'^'
|
|
bra le1
|
|
! '=': ch := '#';
|
|
ld5 cmp #'='
|
|
bne ld6
|
|
lda #'#'
|
|
bra le1
|
|
! ')': ch := ']';
|
|
ld6 cmp #')'
|
|
bne ld7
|
|
lda #']'
|
|
bra le1
|
|
! '>': ch := '}';
|
|
ld7 cmp #'>'
|
|
bne ld8
|
|
lda #'}'
|
|
bra le1
|
|
! '!': ch := '|';
|
|
ld8 cmp #'!'
|
|
bne ld9
|
|
lda #'|'
|
|
bra le1
|
|
! '-': ch := '~';
|
|
ld9 cmp #'-'
|
|
bne le2
|
|
lda #'~'
|
|
! end; {case}
|
|
le1 sta ch
|
|
! chPtr := pointer(ord4(chPtr2) + 1);
|
|
add4 chPtr,#2
|
|
! goto 2;
|
|
brl lab2
|
|
! end; {if}
|
|
! end; {else if}
|
|
! end; {else}
|
|
le2 anop
|
|
pld
|
|
tsc
|
|
clc
|
|
adc #stackFrameSize
|
|
tcs
|
|
rtl
|
|
! end; {NextCh}
|
|
|
|
;
|
|
; Local subroutine
|
|
;
|
|
enum (stop,break,autogo),0 line number debug types
|
|
! procedure DebugCheck;
|
|
!
|
|
! {Check for debugger characters; process if found }
|
|
!
|
|
! begin {DebugCheck}
|
|
DebugCheck anop
|
|
! if chPtr = eofPtr then
|
|
! debugType := stop
|
|
lda chPtr
|
|
ldx chPtr+2
|
|
cmp eofPtr
|
|
bne db1
|
|
cpx eofPtr+2
|
|
bne db1
|
|
stz debugType
|
|
bra db5
|
|
! else if ord(chPtr^) = $07 then begin
|
|
db1 sta p1
|
|
stx p1+2
|
|
lda [p1]
|
|
and #$00FF
|
|
cmp #$07
|
|
bne db2
|
|
! debugType := break;
|
|
lda #break
|
|
sta debugType
|
|
! chPtr := pointer(ord4(chPtr) + 1);
|
|
! end {else if}
|
|
bra db3
|
|
! else if ord(chPtr^) = $06 then begin
|
|
db2 cmp #$06
|
|
bne db4
|
|
! debugType := autoGo;
|
|
lda #autoGo
|
|
sta debugType
|
|
! chPtr := pointer(ord4(chPtr) + 1);
|
|
db3 inc4 chPtr
|
|
! end {else if}
|
|
bra db5
|
|
! else
|
|
! debugType := stop;
|
|
db4 stz debugType
|
|
! end; {DebugCheck}
|
|
db5 rts
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* SetDateTime - set up the date/time strings
|
|
*
|
|
* Outputs:
|
|
* dateStr - date
|
|
* timeStr - time string
|
|
*
|
|
****************************************************************
|
|
*
|
|
SetDateTime private scanner
|
|
|
|
pha get the date/time
|
|
pha
|
|
pha
|
|
pha
|
|
_ReadTimeHex
|
|
lda 1,S set the minutes
|
|
xba
|
|
jsr convert
|
|
sta >time+5
|
|
pla set the seconds
|
|
jsr convert
|
|
sta >time+8
|
|
lda 1,S set the hour
|
|
jsr convert
|
|
sta >time+2
|
|
pla set the year
|
|
xba
|
|
and #$00FF
|
|
ldy #19
|
|
yearloop sec
|
|
sbc #100
|
|
bmi yeardone
|
|
iny
|
|
bra yearloop
|
|
yeardone clc
|
|
adc #100
|
|
jsr convert
|
|
sta >date+11
|
|
tya
|
|
jsr convert
|
|
sta >date+9
|
|
lda 1,S set the day
|
|
inc A
|
|
jsr convert
|
|
short M
|
|
cmp #'0'
|
|
bne dateOK
|
|
lda #' '
|
|
dateOK long M
|
|
sta >date+6
|
|
pla set the month
|
|
xba
|
|
and #$00FF
|
|
asl A
|
|
asl A
|
|
tax
|
|
lda >month,X
|
|
sta >date+2
|
|
lda >month+1,X
|
|
sta >date+3
|
|
pla
|
|
lla timeStr,time set the addresses
|
|
lla dateStr,date
|
|
rtl
|
|
|
|
month dc c'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'
|
|
date dc i'12',c'mmm dd YYyy',i1'0'
|
|
time dc i'9',c'hh:mm:ss',i1'0'
|
|
|
|
convert and #$00FF
|
|
ldx #0
|
|
cv1 sec
|
|
sbc #10
|
|
bcc cv2
|
|
inx
|
|
bra cv1
|
|
cv2 clc
|
|
adc #10
|
|
ora #'0'
|
|
xba
|
|
pha
|
|
txa
|
|
ora #'0'
|
|
ora 1,S
|
|
plx
|
|
rts
|
|
end
|