diff options
author | mrb0nk500 <b0nk@b0nk.xyz> | 2021-02-13 13:59:48 -0500 |
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committer | mrb0nk500 <b0nk@b0nk.xyz> | 2021-02-13 13:59:48 -0500 |
commit | 8d7f27d9a0b61d3694a62f3e54be885d8073f02b (patch) | |
tree | b505454c79dba2e691ee19f716ccfd0d0aba1430 /programs/sub-suite/test-size.s | |
parent | ac778a4d39ba6c80651ce20ce780dfe859c3dcff (diff) |
- Reverted back one commit before the previous commit.
This is because the previous commit actually created
a bug, rather than fixing one.
- Added JMP, and JSR to the ortho extension, and
implemented them both in the assembler, and
emulator.
Diffstat (limited to 'programs/sub-suite/test-size.s')
-rw-r--r-- | programs/sub-suite/test-size.s | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/programs/sub-suite/test-size.s b/programs/sub-suite/test-size.s deleted file mode 100644 index b543a36..0000000 --- a/programs/sub-suite/test-size.s +++ /dev/null @@ -1,59 +0,0 @@ -MAGIC = $AA - - -.org 0 -findramend: - and #0 ; Reset A. -; lda #MAGIC ; Set A to a magic number. -@loop: - mov a, (d) ; Preserve the value. - mov (d), #MAGIC ; Write the magic number to the current end of RAM. - cmp (d), #MAGIC ; Is the value in RAM, the same as the magic number we wrote? - bne @moveback ; No, so move back until we find the last writable memory location. - mov (d), a ; Yes, so restore the previous value. - add.w d, #$4000 ; Increment the end of RAM pointer by 16K. - bra @loop ; Keep looping. -@moveback: - dec d ; Decrement the end of RAM pointer. - mov a, (d) ; Preserve the value. - mov (d), #MAGIC ; Write the magic number to the current end of RAM. - cmp (d), #MAGIC ; Is the value in RAM, the same as the magic number we wrote? - bne @moveback ; No, so keep looping. - mov (d), a ; Yes, so restore the previous value. -@end: - mov a, d ; Return the end of RAM pointer. -; ple.q ; Restore E. - rts ; End of findramend. - - -;findramend: -; phe.q ; Preserve E. -; phb.q ; Preserve B. -; mov e, d ; Set E to the RAM pointer. -; and #0 ; Reset A. -; lda #MAGIC ; Set A to a magic number. -;@loop: -; ldb (e) ; Preserve the value. -; sta (e) ; Write the magic number to the current end of RAM. -; cmp (e) ; Is the value in RAM, the same as the magic number we wrote? -; bne @moveback ; No, so move back until we find the last writable memory location. -; stb (e) ; Yes, so restore the previous value. -; ade.w #$4000 ; Increment the end of RAM pointer by 16K. -; bra @loop ; Keep looping. -;@moveback: -; dee ; Decrement the end of RAM pointer. -; ldb (e) ; Preserve the value. -; sta (e) ; Write the magic number to the current end of RAM. -; cmp (e) ; Is the value in RAM, the same as the magic number we wrote? -; bne @moveback ; No, so keep looping. -; stb (e) ; Yes, so restore the previous value. -;@end: -; mov a, e ; Return the end of RAM pointer. -; ple.q ; Restore E. -; plb.q ; Restore B. -; rts ; End of findramend. - -a -.org findramend -v -q |