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TextOutput.asm
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TextOutput.asm
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;;<< TEXT OUTPUT (ZONE, PRINT, WRITE)
;;=====================================
;;set zone 13
set_zone_13: ;{{Addr=$f299 Code Calls/jump count: 1 Data use count: 0}}
ld a,$0d ;{{f299:3e0d}}
jr _command_zone_1 ;{{f29b:1803}} (+$03)
;;========================================================================
;; command ZONE
;ZONE <integer expression>
;Sets the print zone width. Values 1..255
command_ZONE: ;{{Addr=$f29d Code Calls/jump count: 0 Data use count: 1}}
call eval_expr_as_int_less_than_256;{{f29d:cdc3ce}}
_command_zone_1: ;{{Addr=$f2a0 Code Calls/jump count: 1 Data use count: 0}}
ld (ZONE_value),a ;{{f2a0:325cae}}
ret ;{{f2a3:c9}}
;;========================================================================
;; command PRINT
;PRINT [#<stream expression>,][<print list>][<using clause>][<separator>]
;where
;<print list> is: <print item>[<separator><print item>]*
;<print item> is: <expression>
; or: SPC(<integer expression>)
; or: TAB(<integer expression>)
;<using clause> is: USING <string expression>;<using list>
;<using list> is: <expression>[<separator><expression>]*
;<separator> is: comma or semi-colon
;* - these items can be repeated zero or more times
;Print items to the specified stream
;SPC(..) prints the given number of spaces
;TAB(..) moves to the given tab position
;A trailing SPC, TAB or separator prevents a new line being printed
;USING:
; Valid formatting characters: ! \ & # . + - * $ ^ , _
; _ prints the following character as a literal
; String formatting:
; ! Prints first character of string
; \ \ Prints n characters where n equals the number of spaces between \ chars
; & Prints the entire string
; Number formatting:
; # Specifies a digit position
; . Specifies position of decimal point
; , (before .) Digits will be in groups of three separated by commas
; $$ (Before number): leading $ sign
; ** (Before number): leading spaces will be replaced by *
; **$ (Before number): combination of previous two items
; + (Before number): print leading + sign if positive
; + (After number): print trailing + if positive
; - (After number): print trailing + or - sign
; ^^^^ (After number): print exponent
;If the number can't be displayed in the chosen format a leading % is printed
command_PRINT: ;{{Addr=$f2a4 Code Calls/jump count: 0 Data use count: 1}}
call exec_following_on_evalled_stream_and_swap_back;{{f2a4:cdcfc1}}
;This routine evals a stream number (if present),
;swaps to it,
;CALLs the following code (popping address of the stack),
;swaps back to original stream,
;returns to the caller
call is_next_02 ;{{f2a7:cd3dde}}
jp c,output_new_line ;{{f2aa:da98c3}} No parameters
;;=print item loop
;Loop though each parameter/item
print_item_loop: ;{{Addr=$f2ad Code Calls/jump count: 1 Data use count: 0}}
cp $ed ;{{f2ad:feed}} "USING"
jp z,PRINT_USING ;{{f2af:ca7ef3}}
ex de,hl ;{{f2b2:eb}}
ld hl,PRINT_parameters_LUT;{{f2b3:21c3f2}} Look up the routine tom process the item in the following table...
call get_address_from_table;{{f2b6:cdb4ff}} ...or PRINT_do_other for general items
ex de,hl ;{{f2b9:eb}}
call JP_DE ;{{f2ba:cdfeff}} JP (DE)
call is_next_02 ;{{f2bd:cd3dde}} Next item
jr nc,print_item_loop;{{f2c0:30eb}} (-$15) Loop if not end of statement/line
ret ;{{f2c2:c9}}
;;=PRINT parameters LUT
PRINT_parameters_LUT: ;{{Addr=$f2c3 Data Calls/jump count: 0 Data use count: 1}}
defb $04 ;Count of parameters
defw PRINT_do_other ;Jump to if not found ##LABEL##
defb $2c ;","
defw PRINT_do_comma ; ##LABEL##
defb $e5 ;"SPC"
defw PRINT_do_SPC ; ##LABEL##
defb $ea ;"TAB"
defw PRINT_do_TAB ; ##LABEL##
defb $3b ;";"
defw get_next_token_skipping_space; ##LABEL##
;;+PRINT do other
;Anything other than comma, semicolon, SPC, TAB or USING
PRINT_do_other: ;{{Addr=$f2d2 Code Calls/jump count: 0 Data use count: 1}}
call eval_expression ;{{f2d2:cd62cf}}
push af ;{{f2d5:f5}}
push hl ;{{f2d6:e5}}
call is_accumulator_a_string;{{f2d7:cd66ff}} Parameter type
jr z,PRINT_do_string ;{{f2da:280f}} (+$0f) String
;Print number
call conv_number_to_decimal_string;{{f2dc:cd68ef}} Convert to string
call get_ASCIIZ_string ;{{f2df:cd8af8}} Put string in accumulator
ld (hl),$20 ;{{f2e2:3620}} " " - leading space?
ld hl,(accumulator) ;{{f2e4:2aa0b0}} Addr of string descriptor
inc (hl) ;{{f2e7:34}} inc string length
ld a,(hl) ;{{f2e8:7e}} Get string length
jr PRINT_do_string_skip_A_chars;{{f2e9:181f}} (+$1f)
;;=PRINT do string
PRINT_do_string: ;{{Addr=$f2eb Code Calls/jump count: 1 Data use count: 0}}
ld hl,(accumulator) ;{{f2eb:2aa0b0}} HL=string descriptor
ld b,(hl) ;{{f2ee:46}} B-length
ld c,$00 ;{{f2ef:0e00}}
inc hl ;{{f2f1:23}}
ld a,(hl) ;{{f2f2:7e}} HL=string address
inc hl ;{{f2f3:23}}
ld h,(hl) ;{{f2f4:66}}
ld l,a ;{{f2f5:6f}}
inc b ;{{f2f6:04}}
jr PRINT_do_test_string_wrap;{{f2f7:180e}} (+$0e)
;;=PRINT do string wrap loop
;Test for leading control codes to see if we need to wrap to next line and ignore them(?)
PRINT_do_string_wrap_loop: ;{{Addr=$f2f9 Code Calls/jump count: 1 Data use count: 0}}
ld a,(hl) ;{{f2f9:7e}}
cp $20 ;{{f2fa:fe20}} Control code < $20 " "
inc hl ;{{f2fc:23}}
jr nc,_print_do_string_wrap_loop_9;{{f2fd:3007}} (+$07) Control code
dec a ;{{f2ff:3d}}
jr nz,PRINT_do_string_skip_C_chars;{{f300:2007}} (+$07) Not control code $01 - print symbol given by parameter(?)
dec b ;{{f302:05}}
jr z,PRINT_do_string_skip_C_chars;{{f303:2804}} (+$04) End of string
inc hl ;{{f305:23}}
_print_do_string_wrap_loop_9: ;{{Addr=$f306 Code Calls/jump count: 1 Data use count: 0}}
inc c ;{{f306:0c}}
;;=PRINT do test string wrap
PRINT_do_test_string_wrap: ;{{Addr=$f307 Code Calls/jump count: 1 Data use count: 0}}
djnz PRINT_do_string_wrap_loop;{{f307:10f0}} (-$10)
;;=PRINT do string skip C chars
PRINT_do_string_skip_C_chars: ;{{Addr=$f309 Code Calls/jump count: 2 Data use count: 0}}
ld a,c ;{{f309:79}}
;;=PRINT do string skip A chars
PRINT_do_string_skip_A_chars: ;{{Addr=$f30a Code Calls/jump count: 1 Data use count: 0}}
call poss_validate_xpos_in_D;{{f30a:cde7c2}}
call nc,output_new_line;{{f30d:d498c3}} Nothing to print?
call output_accumulator_string;{{f310:cdd0f8}}
pop hl ;{{f313:e1}}
pop af ;{{f314:f1}}
call z,output_new_line ;{{f315:cc98c3}} ; new text line
ret ;{{f318:c9}}
;;+PRINT do comma
PRINT_do_comma: ;{{Addr=$f319 Code Calls/jump count: 0 Data use count: 1}}
call get_next_token_skipping_space;{{f319:cd2cde}} get next token skipping space
ld a,(ZONE_value) ;{{f31c:3a5cae}}
ld c,a ;{{f31f:4f}}
call get_xpos_of_output_stream;{{f320:cdb9c2}}
dec a ;{{f323:3d}}
_print_do_comma_5: ;{{Addr=$f324 Code Calls/jump count: 1 Data use count: 0}}
sub c ;{{f324:91}} C=chars to next print zone?
jr nc,_print_do_comma_5;{{f325:30fd}} (-$03)
cpl ;{{f327:2f}}
inc a ;{{f328:3c}} A=current print position
ld b,a ;{{f329:47}}
add a,c ;{{f32a:81}} A=new print position
call poss_validate_xpos_in_D;{{f32b:cde7c2}}
jp nc,output_new_line;{{f32e:d298c3}} ; new text line
ld a,b ;{{f331:78}}
jr PRINT_do_B_minus_1_spaces;{{f332:181e}} (+$1e)
;;+PRINT do SPC
PRINT_do_SPC: ;{{Addr=$f334 Code Calls/jump count: 0 Data use count: 1}}
call PRINT_do_eval_SPC_TAB_parameter;{{f334:cd5df3}}
call PRINT_do_process_SPC_TAB_parameter;{{f337:cd69f3}}
ld a,e ;{{f33a:7b}}
jr PRINT_do_B_minus_1_spaces;{{f33b:1815}} (+$15)
;;+PRINT do TAB
PRINT_do_TAB: ;{{Addr=$f33d Code Calls/jump count: 0 Data use count: 1}}
call PRINT_do_eval_SPC_TAB_parameter;{{f33d:cd5df3}}
dec de ;{{f340:1b}}
call PRINT_do_process_SPC_TAB_parameter;{{f341:cd69f3}}
call get_xpos_of_output_stream;{{f344:cdb9c2}}
cpl ;{{f347:2f}}
inc a ;{{f348:3c}}
inc e ;{{f349:1c}}
add a,e ;{{f34a:83}}
jr c,PRINT_do_B_minus_1_spaces;{{f34b:3805}} (+$05)
call output_new_line ;{{f34d:cd98c3}} ; new text line
dec e ;{{f350:1d}}
ld a,e ;{{f351:7b}}
;;=PRINT do B minus 1 spaces
PRINT_do_B_minus_1_spaces: ;{{Addr=$f352 Code Calls/jump count: 4 Data use count: 0}}
ld b,a ;{{f352:47}}
inc b ;{{f353:04}}
_print_do_b_minus_1_spaces_2: ;{{Addr=$f354 Code Calls/jump count: 1 Data use count: 0}}
dec b ;{{f354:05}}
ret z ;{{f355:c8}}
ld a,$20 ;{{f356:3e20}} ' '
call output_char ;{{f358:cda0c3}} ; display text char
jr _print_do_b_minus_1_spaces_2;{{f35b:18f7}} (-$09) Loop
;;=PRINT do eval SPC TAB parameter
PRINT_do_eval_SPC_TAB_parameter: ;{{Addr=$f35d Code Calls/jump count: 2 Data use count: 0}}
call get_next_token_skipping_space;{{f35d:cd2cde}} get next token skipping space
call next_token_if_open_bracket;{{f360:cd19de}} check for open bracket
call eval_expr_as_int ;{{f363:cdd8ce}} get number
jp next_token_if_close_bracket;{{f366:c31dde}} check for close bracket
;;=PRINT do process SPC TAB parameter
;Calc new print position?
PRINT_do_process_SPC_TAB_parameter:;{{Addr=$f369 Code Calls/jump count: 2 Data use count: 0}}
ld a,d ;{{f369:7a}}
rla ;{{f36a:17}}
jr nc,_print_do_process_spc_tab_parameter_4;{{f36b:3003}} (+$03)
ld de,$0000 ;{{f36d:110000}} ##LIT##
_print_do_process_spc_tab_parameter_4:;{{Addr=$f370 Code Calls/jump count: 1 Data use count: 0}}
call pos_is_xpos_in_D_in_range;{{f370:cdcfc2}}
ret nc ;{{f373:d0}}
push hl ;{{f374:e5}}
ex de,hl ;{{f375:eb}}
ld e,a ;{{f376:5f}}
ld d,$00 ;{{f377:1600}}
call _int_modulo_6 ;{{f379:cdaedd}}
pop hl ;{{f37c:e1}}
ret ;{{f37d:c9}}
;;=PRINT USING
PRINT_USING: ;{{Addr=$f37e Code Calls/jump count: 1 Data use count: 0}}
call get_next_token_skipping_space;{{f37e:cd2cde}} get next token skipping space
call eval_expr_and_error_if_not_string;{{f381:cd09cf}} Format string paramater
call next_token_if_equals_inline_data_byte;{{f384:cd25de}}
defb $3b ;inline token to test ";"
push hl ;{{f388:e5}}
ld hl,(accumulator) ;{{f389:2aa0b0}} Address of format string descriptor
ex (sp),hl ;{{f38c:e3}}
call eval_expression ;{{f38d:cd62cf}} Eval first number to format
xor a ;{{f390:af}} Flag=We have parameters to insert
ld (end_of_PRINT_USING_expr_list_flag),a;{{f391:325dae}}
;;=print using format string loop
;Loops through the format string looking for parameters to format and insert
;If we reach the end of the format string and there are more parameters to insert then
;restart the format string
print_using_format_string_loop: ;{{Addr=$f394 Code Calls/jump count: 1 Data use count: 0}}
pop de ;{{f394:d1}} Get format string descriptor
push de ;{{f395:d5}}
ex de,hl ;{{f396:eb}}
ld b,(hl) ;{{f397:46}} B=Format string length
inc hl ;{{f398:23}}
ld a,(hl) ;{{f399:7e}} HL=Format string address
inc hl ;{{f39a:23}}
ld h,(hl) ;{{f39b:66}}
ld l,a ;{{f39c:6f}}
ex de,hl ;{{f39d:eb}}
call print_using_item ;{{f39e:cdcdf3}} Print item
jp nc,raise_improper_argument_error_F;{{f3a1:d2abf4}} NC if zero length format string or format string contains nothing to substitute
;;=print using expr loop
print_using_expr_loop: ;{{Addr=$f3a4 Code Calls/jump count: 1 Data use count: 0}}
call is_next_02 ;{{f3a4:cd3dde}}
jr c,print_using_end_of_parameters;{{f3a7:3811}} (+$11) End of line/statement
call is_A_print_separator;{{f3a9:cdeff3}}
jr z,print_using_end_of_parameters;{{f3ac:280c}} (+$0c) End if not a valid separator
push de ;{{f3ae:d5}}
call eval_expression ;{{f3af:cd62cf}} Eval next expression to format
pop de ;{{f3b2:d1}}
call print_using_item ;{{f3b3:cdcdf3}} Print item
jr nc,print_using_format_string_loop;{{f3b6:30dc}} (-$24) reached end of format string loop so restart it more following parameters
jr print_using_expr_loop;{{f3b8:18ea}} (-$16) Loop for more expressions
;;=print using end of parameters
print_using_end_of_parameters: ;{{Addr=$f3ba Code Calls/jump count: 2 Data use count: 0}}
push af ;{{f3ba:f5}}
ld a,$ff ;{{f3bb:3eff}} Set flag to show there are no more parameters available to insert
ld (end_of_PRINT_USING_expr_list_flag),a;{{f3bd:325dae}}
call print_using_item ;{{f3c0:cdcdf3}}
pop af ;{{f3c3:f1}}
call c,output_new_line ;{{f3c4:dc98c3}} ; new text line
ex (sp),hl ;{{f3c7:e3}}
call pop_TOS_from_string_stack_and_strings_area;{{f3c8:cd03fc}}
pop hl ;{{f3cb:e1}}
ret ;{{f3cc:c9}}
;;=print using item
;Starting from current position in format string looks for the next item to substitute
;printing any literals it comes across along the way. Ends once an item has been subbed or
;at end of format string
;B=chars remaining in format string
;DE=current position in format string
;Returns Carry set if we subbed an item
;DE=addr of next char in format string
print_using_item: ;{{Addr=$f3cd Code Calls/jump count: 3 Data use count: 0}}
ld a,b ;{{f3cd:78}} End of format string
or a ;{{f3ce:b7}}
ret z ;{{f3cf:c8}}
push hl ;{{f3d0:e5}}
_print_using_item_4: ;{{Addr=$f3d1 Code Calls/jump count: 1 Data use count: 0}}
ld a,(de) ;{{f3d1:1a}}
cp $5f ;{{f3d2:fe5f}} "_" Next char is a literal
jr nz,_print_using_item_12;{{f3d4:2007}} (+$07)
inc de ;{{f3d6:13}}
djnz _print_using_item_15;{{f3d7:100c}} (+$0c)
inc b ;{{f3d9:04}}
dec de ;{{f3da:1b}}
jr _print_using_item_15;{{f3db:1808}} (+$08)
_print_using_item_12: ;{{Addr=$f3dd Code Calls/jump count: 1 Data use count: 0}}
call print_using_string_item;{{f3dd:cdf7f3}} Returns C set if item subbed
call nc,PRINT_USING_number_item;{{f3e0:d431f4}} Returns C set if item subbed
jr c,_print_using_item_20;{{f3e3:3808}} (+$08) Done once item subbed
_print_using_item_15: ;{{Addr=$f3e5 Code Calls/jump count: 2 Data use count: 0}}
ld a,(de) ;{{f3e5:1a}}
call output_char ;{{f3e6:cda0c3}} display text char
inc de ;{{f3e9:13}}
djnz _print_using_item_4;{{f3ea:10e5}} (-$1b)
or a ;{{f3ec:b7}}
_print_using_item_20: ;{{Addr=$f3ed Code Calls/jump count: 1 Data use count: 0}}
pop hl ;{{f3ed:e1}}
ret ;{{f3ee:c9}}
;;=is A print separator
;Is A a ';' or ',' token. Returns Z flag set if either was found
is_A_print_separator: ;{{Addr=$f3ef Code Calls/jump count: 2 Data use count: 0}}
cp $3b ;{{f3ef:fe3b}} ";"
jp z,get_next_token_skipping_space;{{f3f1:ca2cde}} get next token skipping space
jp next_token_if_comma;{{f3f4:c315de}} check for comma
;;=print using string item
;Do if format is one for strings, otherwise returns NC
print_using_string_item: ;{{Addr=$f3f7 Code Calls/jump count: 1 Data use count: 0}}
ld a,(de) ;{{f3f7:1a}}
ld c,$00 ;{{f3f8:0e00}}
cp $26 ;{{f3fa:fe26}} "&" Print entire string
jr z,_print_using_do_string_2;{{f3fc:281e}} (+$1e)
inc c ;{{f3fe:0c}}
cp $21 ;{{f3ff:fe21}} "!" Print first character only
jr z,_print_using_do_string_2;{{f401:2819}} (+$19)
xor $5c ;{{f403:ee5c}} "\" Print number of chars equivalent to number of spaces between \ and \
ret nz ;{{f405:c0}}
push bc ;{{f406:c5}}
push de ;{{f407:d5}}
_print_using_string_item_11: ;{{Addr=$f408 Code Calls/jump count: 1 Data use count: 0}}
inc de ;{{f408:13}} Count number of chars (spaces) in C
dec b ;{{f409:05}}
jr z,_print_using_string_item_20;{{f40a:280a}} (+$0a) Premature and of string
inc c ;{{f40c:0c}}
ld a,(de) ;{{f40d:1a}}
cp $5c ;{{f40e:fe5c}} "\"
jr z,PRINT_USING_do_string;{{f410:2808}} (+$08) End of specifier
cp $20 ;{{f412:fe20}} " "
jr z,_print_using_string_item_11;{{f414:28f2}} (-$0e) Loop
_print_using_string_item_20: ;{{Addr=$f416 Code Calls/jump count: 1 Data use count: 0}}
pop de ;{{f416:d1}}
pop bc ;{{f417:c1}}
or a ;{{f418:b7}}
ret ;{{f419:c9}}
;;=PRINT USING do string
;C=number of leading chars of string to print. $00=entire string
PRINT_USING_do_string: ;{{Addr=$f41a Code Calls/jump count: 1 Data use count: 0}}
pop af ;{{f41a:f1}}
pop af ;{{f41b:f1}}
_print_using_do_string_2: ;{{Addr=$f41c Code Calls/jump count: 2 Data use count: 0}}
inc de ;{{f41c:13}}
dec b ;{{f41d:05}}
push bc ;{{f41e:c5}}
push de ;{{f41f:d5}}
ld a,(end_of_PRINT_USING_expr_list_flag);{{f420:3a5dae}} Don't print if we've exhausted all the parameters in PRINT statement
or a ;{{f423:b7}}
jr nz,_print_using_do_string_12;{{f424:2007}} (+$07)
call prob_output_first_C_chars_of_accumulator_string;{{f426:cddcf8}}
ld a,c ;{{f429:79}} If string shorter than format specifier, pad with spaces
call PRINT_do_B_minus_1_spaces;{{f42a:cd52f3}}
_print_using_do_string_12: ;{{Addr=$f42d Code Calls/jump count: 1 Data use count: 0}}
pop de ;{{f42d:d1}}
pop bc ;{{f42e:c1}}
scf ;{{f42f:37}}
ret ;{{f430:c9}}
;;=PRINT USING number item
PRINT_USING_number_item: ;{{Addr=$f431 Code Calls/jump count: 1 Data use count: 0}}
call parse_number_format_template;{{f431:cd48f4}}
ret nc ;{{f434:d0}}
ld a,(end_of_PRINT_USING_expr_list_flag);{{f435:3a5dae}} Don't print if we've exhausted all the parameters in PRINT statement
or a ;{{f438:b7}}
jr nz,_print_using_number_item_12;{{f439:200b}} (+$0b)
push bc ;{{f43b:c5}}
push de ;{{f43c:d5}}
ld a,c ;{{f43d:79}}
call convert_number_to_string_by_format;{{f43e:cd6aef}} Number to string
call output_ASCIIZ_string;{{f441:cd8bc3}} and output it
pop de ;{{f444:d1}}
pop bc ;{{f445:c1}}
_print_using_number_item_12: ;{{Addr=$f446 Code Calls/jump count: 1 Data use count: 0}}
scf ;{{f446:37}}
ret ;{{f447:c9}}
;;===============================================
;;=parse number format template
;DE=addr of format template
;B=length of format template
;Valid chars in format template: + - $ £ * # , . ^
;A returns the number of (printable?) chars in the template
;C returns a bitwise set of flags:
;Bit Hex
;7 $80 Always set - indicates we have a format
; (as opposed to calling the conversion routines without a format)
;6 &40 Exponent ('^^^^' at the end)
;5 $20 Asterisk prefix
;4 $10 If clear then show sign prefix, otherwise sign suffix
;3 $08 If bit 4 set, bit 3 set specifies always show sign prefix, even for positive numbers
; bit 3 clear specifies sign prefix only if negative
; bit 3 clear specifies sign prefix only if negative
; If bit 4 clear, bit 3 clear specifies sign suffix of '-' or space
; bit 3 set specifies sign suffix of '-' or '+'
;2 &04 Currency symbol prefix (actual symbol is stored at &ae54)
;1 &02 Contains comma(s)
;(Bit zero is used as a flag when doing conversions)
;During processing:
;H=count of the number of chars before the decimal point
;L=the number of chars after the decimal point, including the decimal point (when processing the hash stuff)
;Thus H + L is the total number of chars (when in the hash stuff)
parse_number_format_template: ;{{Addr=$f448 Code Calls/jump count: 2 Data use count: 0}}
push bc ;{{f448:c5}}
push de ;{{f449:d5}}
ld c,$80 ;{{f44a:0e80}} Set bit 7 to show we have a format
ld h,$00 ;{{f44c:2600}} Init character counter
ld a,(de) ;{{f44e:1a}}
cp $2b ;{{f44f:fe2b}} '+' - sign prefix
jr nz,_parse_number_format_template_12;{{f451:2007}}
inc de ;{{f453:13}}
dec b ;{{f454:05}}
jr z,template_error ;{{f455:2824}} (+$24)
inc h ;{{f457:24}}
ld c,$88 ;{{f458:0e88}} Bit 7 = we have a format, Bit 4=sign prefix
_parse_number_format_template_12: ;{{Addr=$f45a Code Calls/jump count: 1 Data use count: 0}}
ld a,(de) ;{{f45a:1a}}
cp $2e ;{{f45b:fe2e}} '.'
jr z,template_period ;{{f45d:2820}}
cp $23 ;{{f45f:fe23}} '#'
jr z,template_hash ;{{f461:283e}}
inc de ;{{f463:13}}
dec b ;{{f464:05}}
jr z,template_error ;{{f465:2814}} (+$14)
ex de,hl ;{{f467:eb}} Test for currency symbols or asterisk
cp (hl) ;{{f468:be}}
ex de,hl ;{{f469:eb}}
jr nz,template_error ;{{f46a:200f}} (+$0f)
inc h ;{{f46c:24}}
inc h ;{{f46d:24}}
ld l,$04 ;{{f46e:2e04}} Flags bit 2 = currency symbol
call test_for_currency_symbols;{{f470:cd02f5}}
jr z,template_currency_symbol;{{f473:2824}} (+$24)
ld l,$20 ;{{f475:2e20}} Flags bit 5 = asterisk
cp $2a ;{{f477:fe2a}} '*'
jr z,template_asterisk;{{f479:2811}} (+$11)
;;=template error
template_error: ;{{Addr=$f47b Code Calls/jump count: 5 Data use count: 0}}
pop de ;{{f47b:d1}} Possibly just premature end of template?
pop bc ;{{f47c:c1}}
or a ;{{f47d:b7}}
ret ;{{f47e:c9}}
;;=template period
template_period: ;{{Addr=$f47f Code Calls/jump count: 1 Data use count: 0}}
inc de ;{{f47f:13}} If the first char (other than sign) is a decimal point
dec b ;{{f480:05}}
jr z,template_error ;{{f481:28f8}} (-$08)
ld a,(de) ;{{f483:1a}}
cp $23 ;{{f484:fe23}} '#' Leading Period must be followed by a hash
jr nz,template_error ;{{f486:20f3}} (-$0d)
dec de ;{{f488:1b}}
inc b ;{{f489:04}}
jr template_hash ;{{f48a:1815}} (+$15)
;;=template asterisk
template_asterisk: ;{{Addr=$f48c Code Calls/jump count: 1 Data use count: 0}}
inc de ;{{f48c:13}}
dec b ;{{f48d:05}}
jr z,_template_currency_symbol_3;{{f48e:280e}} (+$0e)
ld a,(de) ;{{f490:1a}}
call test_for_currency_symbols;{{f491:cd02f5}} Asterisk followed by currency symbol
jr nz,_template_currency_symbol_3;{{f494:2008}} (+$08)
inc h ;{{f496:24}}
ld l,$24 ;{{f497:2e24}} Flag bits for 'asterisk' and 'currency symbol' if asterisk + currency symbol
;;=template currency symbol
template_currency_symbol: ;{{Addr=$f499 Code Calls/jump count: 1 Data use count: 0}}
ld (Print_format_currency_symbol___or_),a;{{f499:3254ae}} Set currency symbol
inc de ;{{f49c:13}}
dec b ;{{f49d:05}}
_template_currency_symbol_3: ;{{Addr=$f49e Code Calls/jump count: 2 Data use count: 0}}
ld a,c ;{{f49e:79}} OR C,L - Put new flags into C
or l ;{{f49f:b5}}
ld c,a ;{{f4a0:4f}}
;;=template hash
template_hash: ;{{Addr=$f4a1 Code Calls/jump count: 2 Data use count: 0}}
pop af ;{{f4a1:f1}} Hashes before the decimal point. (Except if first char is decimal point,
;in which case we arrive here still at the decimal point)
pop af ;{{f4a2:f1}}
call do_template_hash ;{{f4a3:cdaef4}}
ld a,h ;{{f4a6:7c}} Chars before decimal point
add a,l ;{{f4a7:85}} Chars including and after decimal point
cp $15 ;{{f4a8:fe15}}
ret c ;{{f4aa:d8}}
;;=raise Improper Argument error
raise_improper_argument_error_F: ;{{Addr=$f4ab Code Calls/jump count: 1 Data use count: 0}}
jp Error_Improper_Argument;{{f4ab:c34dcb}} Error: Improper Argument
;;=do template hash
do_template_hash: ;{{Addr=$f4ae Code Calls/jump count: 1 Data use count: 0}}
xor a ;{{f4ae:af}}
ld l,a ;{{f4af:6f}} L=0. Number of chars after decimal point
or b ;{{f4b0:b0}}
ret z ;{{f4b1:c8}}
;;=template hash loop
template_hash_loop: ;{{Addr=$f4b2 Code Calls/jump count: 1 Data use count: 0}}
ld a,(de) ;{{f4b2:1a}} Again hashes before the decimal point, unless the first char is a decimal point
cp $2e ;{{f4b3:fe2e}} '.'
jr z,template_hash_period;{{f4b5:280f}} (+$0f)
cp $23 ;{{f4b7:fe23}} '#'
jr z,template_hash_hash;{{f4b9:2806}} (+$06)
cp $2c ;{{f4bb:fe2c}} ","
jr nz,template_hash_other;{{f4bd:2010}} (+$10)
set 1,c ;{{f4bf:cbc9}} Flag bit 1 = Comma
;;=template hash hash
template_hash_hash: ;{{Addr=$f4c1 Code Calls/jump count: 1 Data use count: 0}}
inc h ;{{f4c1:24}} Just loop while hashes
inc de ;{{f4c2:13}}
djnz template_hash_loop;{{f4c3:10ed}} (-$13)
ret ;{{f4c5:c9}}
;;=template hash period
;Do items after the decimal point
template_hash_period: ;{{Addr=$f4c6 Code Calls/jump count: 2 Data use count: 0}}
inc l ;{{f4c6:2c}} Branch here once we encounter a decimal point, inc after-decimal-point counter
inc de ;{{f4c7:13}}
dec b ;{{f4c8:05}}
ret z ;{{f4c9:c8}}
ld a,(de) ;{{f4ca:1a}}
cp $23 ;{{f4cb:fe23}} '#'
jr z,template_hash_period;{{f4cd:28f7}} (-$09) Loop for hashes after the decimal point
;;=template hash other
;Items at the end of the template
template_hash_other: ;{{Addr=$f4cf Code Calls/jump count: 1 Data use count: 0}}
ex de,hl ;{{f4cf:eb}} Anything else and we're done with the number part
push hl ;{{f4d0:e5}}
;Test for four '^' - exponent (Note, if we get past the first test then A contains '^')
cp $5e ;{{f4d1:fe5e}} "^"
jr nz,_template_hash_other_20;{{f4d3:2016}} (+$16)
inc hl ;{{f4d5:23}}
cp (hl) ;{{f4d6:be}}
jr nz,_template_hash_other_20;{{f4d7:2012}} (+$12)
inc hl ;{{f4d9:23}}
cp (hl) ;{{f4da:be}}
jr nz,_template_hash_other_20;{{f4db:200e}} (+$0e)
inc hl ;{{f4dd:23}}
cp (hl) ;{{f4de:be}}
jr nz,_template_hash_other_20;{{f4df:200a}} (+$0a)
inc hl ;{{f4e1:23}}
;If we got here then we found four '^'
ld a,b ;{{f4e2:78}}
sub $04 ;{{f4e3:d604}}
jr c,_template_hash_other_20;{{f4e5:3804}} (+$04)
ld b,a ;{{f4e7:47}}
ex (sp),hl ;{{f4e8:e3}}
set 6,c ;{{f4e9:cbf1}} Flags bit 6 = Exponent
_template_hash_other_20: ;{{Addr=$f4eb Code Calls/jump count: 5 Data use count: 0}}
pop hl ;{{f4eb:e1}}
ex de,hl ;{{f4ec:eb}}
inc b ;{{f4ed:04}}
dec b ;{{f4ee:05}}
ret z ;{{f4ef:c8}}
bit 3,c ;{{f4f0:cb59}} Exit if we already have a sign prefix
ret nz ;{{f4f2:c0}}
ld a,(de) ;{{f4f3:1a}}
cp $2d ;{{f4f4:fe2d}} '-'
jr z,_template_hash_other_33;{{f4f6:2805}}
cp $2b ;{{f4f8:fe2b}} '+'
ret nz ;{{f4fa:c0}}
set 3,c ;{{f4fb:cbd9}} '+' suffix gives us bits 3 and 4
_template_hash_other_33: ;{{Addr=$f4fd Code Calls/jump count: 1 Data use count: 0}}
set 4,c ;{{f4fd:cbe1}} '-' suffix only gives us bit 4
inc de ;{{f4ff:13}}
dec b ;{{f500:05}}
ret ;{{f501:c9}}
;;=test for currency symbols
;Returns Z if dollar or pound sign
;Patch this is you want another currency - as long as it's a single char prefix.
;Adding Euros might be a fun project?
test_for_currency_symbols: ;{{Addr=$f502 Code Calls/jump count: 2 Data use count: 0}}
cp $24 ;{{f502:fe24}} '$'
ret z ;{{f504:c8}}
cp $a3 ;{{f505:fea3}} '£'
ret ;{{f507:c9}}
;;========================================================================
;; command WRITE
;WRITE [#<stream expression>,][<write list>]
;where <write list> is <expression>[<separator>]*
;* - means item can be repeated zero or more times
;<separator> can be a comma or semicolon
;Similar to PRINT but:
;- print zones are ignored
;- strings are enclosed in double quotes
;- commas are added between items
;- does not support the trailing separator
;Intended for writing to files in a form that can be read back by INPUT
command_WRITE: ;{{Addr=$f508 Code Calls/jump count: 0 Data use count: 1}}
call exec_following_on_evalled_stream_and_swap_back;{{f508:cdcfc1}}
;This routine evals a stream number (if present),
;swaps to it,
;CALLs the following code (popping address of the stack),
;swaps back to original stream,
;returns to the caller
call is_next_02 ;{{f50b:cd3dde}}
jp c,output_new_line ;{{f50e:da98c3}} Nothing to print
;;=WRITE do param loop
WRITE_do_param_loop: ;{{Addr=$f511 Code Calls/jump count: 1 Data use count: 0}}
call eval_expression ;{{f511:cd62cf}}
push af ;{{f514:f5}}
push hl ;{{f515:e5}}
call is_accumulator_a_string;{{f516:cd66ff}}
jr z,WRITE_do_string ;{{f519:2808}} (+$08)
call convert_accumulator_to_string;{{f51b:cd5aef}}
call output_ASCIIZ_string;{{f51e:cd8bc3}} ; display 0 terminated string
jr WRITE_do_after_parameter;{{f521:180d}} (+$0d)
;;=WRITE do string
WRITE_do_string: ;{{Addr=$f523 Code Calls/jump count: 1 Data use count: 0}}
ld a,$22 ;{{f523:3e22}} '"'
call output_char ;{{f525:cda0c3}} ; display text char
call output_accumulator_string;{{f528:cdd0f8}}
ld a,$22 ;{{f52b:3e22}} '"'
call output_char ;{{f52d:cda0c3}} ; display text char
;;=WRITE do after parameter
WRITE_do_after_parameter: ;{{Addr=$f530 Code Calls/jump count: 1 Data use count: 0}}
pop hl ;{{f530:e1}}
pop af ;{{f531:f1}}
jp z,output_new_line ;{{f532:ca98c3}} ; new text line
call is_A_print_separator;{{f535:cdeff3}}
ld a,$2c ;{{f538:3e2c}}
call output_char ;{{f53a:cda0c3}} ; display text char
jr WRITE_do_param_loop;{{f53d:18d2}} (-$2e)