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| author | Wojciech Kosior <kwojtus@protonmail.com> | 2020-09-05 16:43:32 +0200 |
|---|---|---|
| committer | Wojciech Kosior <kwojtus@protonmail.com> | 2020-09-05 16:43:32 +0200 |
| commit | 40a11a7155bc474d85ded1fef183baae2007f101 (patch) | |
| tree | ee101c1e2ba2be097c5ff81b321247fb15edd882 /design | |
| parent | 572c9d71cf66bb2097bce384b8cb3899af0b8473 (diff) | |
| download | AGH-engineering-thesis-40a11a7155bc474d85ded1fef183baae2007f101.tar.gz AGH-engineering-thesis-40a11a7155bc474d85ded1fef183baae2007f101.zip | |
add tee instruction together with bench
Diffstat (limited to 'design')
| -rw-r--r-- | design/stack_machine.v | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/design/stack_machine.v b/design/stack_machine.v index d0ca36b..04b1285 100644 --- a/design/stack_machine.v +++ b/design/stack_machine.v @@ -183,9 +183,14 @@ module stack_machine_new assign instr_set_sp = use_im && stack_same_size && instruction[11:7] == 5'd0; - /* Instructions, that grom stack */ + /* Instructions, that grow stack */ + wire instr_tee; + assign instr_tee = !set_im && !use_im && stack_grows && + instruction[11:0] == 12'd0; + wire instr_const; - assign instr_const = use_im && stack_grows && instruction[11:7] == 5'd0; + assign instr_const = use_im && stack_grows && + instruction[11:7] == 5'd0; /* Instructions, that shrink stack */ /* none now */ @@ -423,6 +428,9 @@ module stack_machine_new if (instr_const && first_execution_tick) r1 <= im_effective; + if (instr_tee) + r1 <= r1; + if (instr_set_sp) `SET_SP(im_effective); end // case: STEP_EXECUTING |