Terminal control/Inverse video: Difference between revisions
Content added Content deleted
No edit summary |
(Added 6502 assembly example) |
||
| Line 1: | Line 1: | ||
{{task|Terminal control}}[[Category:Terminal control]] |
{{task|Terminal control}}[[Category:Terminal control]] |
||
The task is to display a word in inverse video (or reverse video) followed by a word in normal video. |
The task is to display a word in inverse video (or reverse video) followed by a word in normal video. |
||
=={{header|6502 Assembly}}== |
|||
{{works with|http://vice-emu.sourceforge.net/ VICE}} |
|||
This example has been written for the C64 and uses the STROUT BASIC routine. |
|||
Compile with the [http://turbo.style64.org/ Turbo Macro Pro cross assembler]: |
|||
<pre> |
|||
tmpx -i inverse-video.s -o inverse-video.prg |
|||
</pre> |
|||
Run with: |
|||
<pre> |
|||
SYS680 |
|||
</pre> |
|||
<lang 6502asm>; C64 - Terminal control: Inverse Video |
|||
; *** labels *** |
|||
strout = $ab1e |
|||
; *** main *** |
|||
*=$02a8 ; sys 680 |
|||
lda #<str ; Address of the message to print - low byte |
|||
ldy #>str ; Address high byte |
|||
jsr strout ; Print a null terminated string. |
|||
rts |
|||
; *** data *** |
|||
str .byte $12 ; the REVERSE ON control code |
|||
; see https://en.wikipedia.org/wiki/PETSCII |
|||
.text "reversed" |
|||
.byte $92 ; the REVERSE OFF control code |
|||
.null " normal" ; null terminated string |
|||
</lang> |
|||
=={{header|Ada}}== |
=={{header|Ada}}== |
||