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- ## Copyright (C) 2016 Jeremiah Orians
- ## This file is part of stage0.
- ##
- ## stage0 is free software: you can redistribute it and/or modify
- ## it under the terms of the GNU General Public License as published by
- ## the Free Software Foundation, either version 3 of the License, or
- ## (at your option) any later version.
- ##
- ## stage0 is distributed in the hope that it will be useful,
- ## but WITHOUT ANY WARRANTY; without even the implied warranty of
- ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ## GNU General Public License for more details.
- ##
- ## You should have received a copy of the GNU General Public License
- ## along with stage0. If not, see <http://www.gnu.org/licenses/>.
- # :start
- 2D22000a # LOADUI R2 10 ; We will be using R2 for our counter
- # ;; Prep TAPE_01
- 2D201100 # LOADUI R0 0x1100
- 42100000 # FOPEN_READ
- # :main
- # ;; Read a byte
- 2D211100 # LOADUI R1 0x1100
- 42100100 # FGETC
- # ;; Check for EOF
- A0100000 # CMPSKIPI.GE R0 0
- 3C000028 # JUMP @main_1
- # ;; Write the Byte
- 0D000021 # FALSE R1
- 42100200 # FPUTC
- # ;; Check for LF
- A030000a # CMPSKIPI.NE R0 10 ; Skip if not line feed
- 10220001 # SUBI R2 R2 1 ; Decrement on line feed
- # ;; Loop if not Zero
- A0220000 # CMPSKIPI.E R2 0 ; Skip if counter is zero
- 3C00ffdc # JUMP @main
- # ;; Otherwise provide main loop functionality
- 42100100 # FGETC ; Wait for key press
- 2D22000a # LOADUI R2 10 ; Reset counter
- 3C00ffd0 # JUMP @main ; And loop
- # :main_1
- # ;; Close up as we are done
- 2D201100 # LOADUI R0 0x1100 ; Close TAPE_01
- 42100002 # FCLOSE
- FFFFFFFF # HALT
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