diff options
| author | mrb0nk500 <b0nk@b0nk.xyz> | 2019-12-07 12:21:35 -0500 |
|---|---|---|
| committer | mrb0nk500 <b0nk@b0nk.xyz> | 2019-12-07 12:21:35 -0500 |
| commit | 8b20b35bf5506ff74b7337e35d6827064eace425 (patch) | |
| tree | 70d52e2f59057a6d2d93aaa7d287031afc0973dc /test | |
| parent | 8d0f46d4e62af5d66ff3cce872256163a41b54bf (diff) | |
Added six instructions for transfering data
between the three main registers.
These instructions are:
TAY: Transfer Accumulator to Y.
TAX: Transfer Accumulator to X.
TYX: Transfer Y to X.
TYA: Transfer Y to Accumulator.
TXA: Transfer X to Accumulator.
TXY: Transfer X to Y.
Diffstat (limited to 'test')
| -rw-r--r-- | test/reg-transfer.s | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/reg-transfer.s b/test/reg-transfer.s new file mode 100644 index 0000000..580020c --- /dev/null +++ b/test/reg-transfer.s @@ -0,0 +1,23 @@ +; Test register transfer instructions. +; +; by mr b0nk 500 <b0nk @b0nk.xyz> + +cps +inc ; Increment the accumulator. +tay ; Transfer the accumulator to the y register. +tax ; Do the same thing, but with the x register. +jmp $1 ; Loop forever. + +.org $8000 +cps +inc ; Increment the accumulator. +tay ; Transfer the accumulator to the y register. +tax ; Do the same thing, but with the x register. +jmp $1 ; Loop forever. + +.org $FF50 +.qword $8000 + +; Execute the program. +done + |