mirror of
https://github.com/bobbimanners/emailler.git
synced 2024-09-12 02:54:54 +00:00
190 lines
4.0 KiB
OpenEdge ABL
190 lines
4.0 KiB
OpenEdge ABL
|
|
OPTIONS_PER_PAGE = 18
|
|
.bss
|
|
|
|
number_of_options: .res 1
|
|
current_option: .res 1
|
|
|
|
first_option_this_page: .res 1
|
|
options_shown_this_page: .res 1
|
|
|
|
option_description_pointers: .res 256 ;table of addresses of up to 128 filenames
|
|
|
|
.code
|
|
|
|
|
|
;on entry, AX should point to the list of null terminated option strings to be selected from
|
|
;on exit, AX points to the selected string
|
|
select_option_from_menu:
|
|
|
|
stax @lda_from_options_source+1
|
|
ldy #0
|
|
sty number_of_options
|
|
|
|
|
|
@copy_one_pointer:
|
|
jsr @lda_from_options_source
|
|
beq @found_last_option_string
|
|
|
|
lda @lda_from_options_source+1
|
|
sta option_description_pointers,y
|
|
lda @lda_from_options_source+2
|
|
sta option_description_pointers+1,y
|
|
iny
|
|
iny
|
|
|
|
inc number_of_options
|
|
|
|
@scan_for_null_byte:
|
|
jsr @move_to_next_byte
|
|
jsr @lda_from_options_source
|
|
bne @scan_for_null_byte
|
|
|
|
jsr @move_to_next_byte
|
|
jmp @copy_one_pointer
|
|
|
|
@lda_from_options_source:
|
|
lda $FFFF ;filled in from above
|
|
rts
|
|
|
|
@move_to_next_byte:
|
|
inc @lda_from_options_source+1
|
|
bne :+
|
|
inc @lda_from_options_source+2
|
|
:
|
|
rts
|
|
|
|
@found_last_option_string:
|
|
|
|
@display_first_page_of_options:
|
|
lda #0
|
|
sta first_option_this_page
|
|
|
|
@print_current_page:
|
|
jsr cls
|
|
ldax #select_from_following_options
|
|
jsr print
|
|
lda #'('
|
|
jsr print_a
|
|
lda #'$'
|
|
jsr print_a
|
|
lda first_option_this_page
|
|
sta current_option
|
|
clc
|
|
adc #1
|
|
jsr print_hex
|
|
lda #'/'
|
|
jsr print_a
|
|
lda #'$'
|
|
jsr print_a
|
|
lda number_of_options
|
|
jsr print_hex
|
|
lda #')'
|
|
jsr print_a
|
|
jsr print_cr
|
|
jsr print_cr
|
|
lda #0
|
|
sta options_shown_this_page
|
|
|
|
@print_loop:
|
|
|
|
lda options_shown_this_page
|
|
clc
|
|
adc #'A'
|
|
jsr print_a
|
|
|
|
lda #')'
|
|
jsr print_a
|
|
|
|
lda #' '
|
|
jsr print_a
|
|
|
|
lda current_option
|
|
asl
|
|
tax
|
|
lda option_description_pointers,x
|
|
tay
|
|
lda option_description_pointers+1,x
|
|
tax
|
|
tya
|
|
jsr print
|
|
jsr print_cr
|
|
|
|
inc current_option
|
|
lda current_option
|
|
cmp number_of_options
|
|
beq @get_keypress
|
|
inc options_shown_this_page
|
|
lda options_shown_this_page
|
|
cmp #OPTIONS_PER_PAGE
|
|
beq @get_keypress
|
|
jmp @print_loop
|
|
|
|
@get_keypress:
|
|
lda #'?'
|
|
jsr get_key
|
|
cmp #$95
|
|
beq @forward_one_page
|
|
cmp #$8a
|
|
beq @forward_one_page
|
|
cmp #$8b
|
|
beq @back_one_page
|
|
cmp #$88
|
|
beq @back_one_page
|
|
|
|
ora #$e0 ;make it a lower case letter with high bit set
|
|
sec
|
|
sbc #$e1
|
|
bcc @get_keypress ;if we have underflowed, it wasn't a valid option
|
|
cmp #OPTIONS_PER_PAGE-1
|
|
beq @got_valid_option
|
|
bpl @get_keypress ;if we have underflowed, it wasn't a valid option
|
|
|
|
@got_valid_option:
|
|
|
|
clc
|
|
adc first_option_this_page
|
|
cmp number_of_options
|
|
bcs @get_keypress ;this cmp/bcs is to check the case where we are on the last page of options (which can have less than then
|
|
;normal number of options) and have pressed a letter that is not a valid option for this page, but is for all other
|
|
;pages.
|
|
;a now contains the index of the selected option
|
|
asl ;double it
|
|
tay
|
|
lda option_description_pointers+1,y
|
|
tax
|
|
lda option_description_pointers,y
|
|
rts
|
|
|
|
|
|
@forward_one_page:
|
|
clc
|
|
lda first_option_this_page
|
|
adc #OPTIONS_PER_PAGE
|
|
sta first_option_this_page
|
|
cmp number_of_options
|
|
bmi @not_last_page_of_options
|
|
@back_to_first_page:
|
|
jmp @display_first_page_of_options
|
|
@not_last_page_of_options:
|
|
jmp @print_current_page
|
|
|
|
@back_one_page:
|
|
sec
|
|
lda first_option_this_page
|
|
sbc #OPTIONS_PER_PAGE
|
|
bcc @show_last_page_of_options
|
|
sta first_option_this_page
|
|
jmp @print_current_page
|
|
@show_last_page_of_options:
|
|
sec
|
|
lda number_of_options
|
|
sbc #OPTIONS_PER_PAGE
|
|
bcc @back_to_first_page
|
|
sta first_option_this_page
|
|
jmp @print_current_page
|
|
; ldax #tftp_dir_buffer
|
|
; stax temp_filename_ptr
|
|
|
|
.rodata
|
|
select_from_following_options: .byte "SELECT ONE OF THE FOLLOWING OPTIONS:",13,0 |