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| author | mrb0nk500 <b0nk@b0nk.xyz> | 2020-05-29 22:38:34 -0400 |
|---|---|---|
| committer | mrb0nk500 <b0nk@b0nk.xyz> | 2020-05-29 22:38:34 -0400 |
| commit | 2f9d38f9f9d6f17bc274934b23915417012eeed8 (patch) | |
| tree | b72aff709261d5e22f026835191eec9b73a77ff5 /test/hello-world.s | |
| parent | 47cb4ad67be723a4df8e6ccd3cad6be79e3e7765 (diff) | |
Make JSL, JSR absolute, and remove RTL.
The reason for doing this was because JSL, and RTL are
redundent, as they both do the same thing as JSR, and
RTS.
Diffstat (limited to 'test/hello-world.s')
| -rw-r--r-- | test/hello-world.s | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/test/hello-world.s b/test/hello-world.s index 9138bc7..f3b540a 100644 --- a/test/hello-world.s +++ b/test/hello-world.s @@ -1,8 +1,12 @@ ; Hello world. ; Writen in Sux assembly by mr b0nk 500 <b0nk@b0nk.xyz> +status = $100 ; Status. +scr = $101 ; Screen output. + + ; Initialize, and declare variables. -.org $8000 +.org $A000 string: .byte "Hello, world!\n" @@ -12,7 +16,7 @@ buffer: ; Get CPU into a known state. -.org $0 +.org $8000 reset: cps ; Reset the processor status. ldx.w #$FFFF ; Set up the stack pointer. @@ -25,21 +29,22 @@ start: line_count: iny ; Increment the line count. - cpy #$32 - beq spin ; Have we printed 50 lines? - jmp start ; Keep looping until we have printed 50 lines. + cpy #50 ; Have we printed 50 lines? + beq disp ; Yes, so we're done. + jmp start ; No, so keep looping. ; Printing sub routine. print: lda string, x ; Get character at offset x. beq line_count ; Did we find a null terminator? - sta $C001 ; Print character. + sta scr ; Print character. inx ; Increment offset. jmp print ; Keep printing more characters. ; The other threads would clash, if we're running the same code. ; So, have them spin instead, please? -.org $1000 +disp: + lda status spin: nop nop @@ -58,5 +63,6 @@ spin: .qword spin .qword spin .qword spin -done +a +d |