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