shave another 4 bytes from stage0 monitor bu using `TRUE R11` for toggle
This commit is contained in:
Dmitry Petukhov
parent
2ba42c00c1
commit
ecf9194374
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@ -15,7 +15,7 @@
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## along with stage0. If not, see <http://www.gnu.org/licenses/>.
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# :start ; offset = 0
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E0002D2B0001 # LOADUI R11 1 ; Our toggle
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0D00003B # TRUE R11 ; Our toggle
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E0002D2D0600 # LOADUI R13 0x600 ; Where we are starting our Stack
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# ;; R14 will be storing our condition
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0D00002F # FALSE R15 ; Our holder
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@ -28,7 +28,7 @@ E0002D201100 # LOADUI R0 0x1100
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E0002D201101 # LOADUI R0 0x1101
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42100001 # FOPEN_WRITE
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# :loop ; offset = 24
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# :loop ; offset = 22
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0D000021 # FALSE R1 ; Read from tty
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42100100 # FGETC ; Read a Char
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E000A030000d # CMPSKIPI.NE R0 13 ; Replace all CR
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@ -38,17 +38,17 @@ E0002D20000a # LOADUI R0 10 ; WIth LF
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# ;; Check for Ctrl-D
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E000A0300004 # CMPSKIPI.NE R0 4
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3C000110 # JUMP @finish
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3C00010e # JUMP @finish
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# ;; Check for EOF
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E0002CC0010a # JUMP.NP R0 @finish
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E0002CC00108 # JUMP.NP R0 @finish
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# ;; Write out unprocessed byte
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E0002D211101 # LOADUI R1 0x1101 ; Write to TAPE_02
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42100200 # FPUTC ; Print the Char
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# ;; Convert byte to nybble
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E0002D0D003e # CALLI R13 @hex ; Convert it
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E0002D0D003c # CALLI R13 @hex ; Convert it
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# ;; Get another byte if nonhex
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E0002CC0ffc2 # JUMP.NP R0 @loop ; Don't use nonhex chars
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@ -62,18 +62,18 @@ E100B0F0000f # ANDI R15 R0 0x0F ; Store First nibble
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3C00ffae # JUMP @loop
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# ;; Combined second nybble in pair with first
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# :second_nybble ; offset = 76
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# :second_nybble ; offset = 74
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E0002D5F0004 # SL0I R15 4 ; Shift our first nibble
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E100B000000f # ANDI R0 R0 0x0F ; Mask out top
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0500000F # ADD R0 R0 R15 ; Combine nibbles
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# ;; Writeout and prepare for next cycle
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E0002D1B0001 # LOADI R11 1 ; Flip the toggle
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0D00003B # TRUE R11 ; Flip the toggle
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E0002D211100 # LOADUI R1 0x1100 ; Write the combined byte
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42100200 # FPUTC ; To TAPE_01
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3C00ff8a # JUMP @loop ; Try to get more bytes
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3C00ff8c # JUMP @loop ; Try to get more bytes
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# :hex ; offset = 9a
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# :hex ; offset = 96
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# ;; Deal with line comments starting with #
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E1001FE00023 # CMPUI R14 R0 35
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E0002C5E007e # JUMP.E R14 @ascii_comment
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@ -109,23 +109,23 @@ E0002C7E000e # JUMP.LE R14 @ascii_low
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# ;; Ignore the rest
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3C00001e # JUMP @ascii_other
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# :ascii_num ; offset = FD
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# :ascii_num ; offset = FA
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E10011000030 # SUBUI R0 R0 48
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0D01001D # RET R13
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# :ascii_low ; offset = 108
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# :ascii_low ; offset = 104
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E10011000057 # SUBUI R0 R0 87
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0D01001D # RET R13
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# :ascii_high ; offset = 112
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# :ascii_high ; offset = 102
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E10011000037 # SUBUI R0 R0 55
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0D01001D # RET R13
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# :ascii_other ; offset = 11c
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# :ascii_other ; offset = 118
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0D000030 # TRUE R0
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0D01001D # RET R13
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# :ascii_comment ; offset = 124
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# :ascii_comment ; offset = 120
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0D000021 # FALSE R1 ; Read from tty
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42100100 # FGETC ; Read another char
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E000A030000d # CMPSKIPI.NE R0 13 ; Replace all CR
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@ -137,7 +137,7 @@ E0002D211101 # LOADUI R1 0x1101 ; Write to TAPE_02
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E0002C6Effd2 # JUMP.NE R14 @ascii_comment ; Otherwise keep looping
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3C00ffc6 # JUMP @ascii_other
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# :finish ; offset = 156
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# :finish ; offset = 152
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E0002D201100 # LOADUI R0 0x1100 ; Close TAPE_01
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42100002 # FCLOSE
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E0002D201101 # LOADUI R0 0x1101 ; Close TAPE_02
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@ -15,7 +15,7 @@
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; along with stage0. If not, see <http://www.gnu.org/licenses/>.
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:start
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LOADUI R11 1 ; Our toggle
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TRUE R11 ; Our toggle
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LOADUI R13 0x600 ; Where we are starting our Stack
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;; R14 will be storing our condition
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FALSE R15 ; Our holder
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@ -69,7 +69,7 @@
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ADD R0 R0 R15 ; Combine nibbles
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;; Writeout and prepare for next cycle
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LOADI R11 1 ; Flip the toggle
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TRUE R11 ; Flip the toggle
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LOADUI R1 0x1100 ; Write the combined byte
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FPUTC ; To TAPE_01
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JUMP @loop ; Try to get more bytes
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@ -5,7 +5,7 @@ f4bbf9e9c4828170d0c153ac265382dc705643f95efd2a029243326d426be5a4 roms/forth
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2b80849180d5fb3757bcca2471b6337808e5b5ca80b18d93fa82ddef0435b84b roms/lisp
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3020b194ead31ae19ba66fc35ed95465514373f6005896350d1608c9efabbdca roms/M0
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059d38e34275029f2de5f600f08fe01bd13cd173f7da58e3fbec7114074beff2 roms/SET
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792e2be913921dd55a28f55dcf2e6b1523d34fdbccc27c38f77e74c99ef97a4b roms/stage0_monitor
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cd2e30b50ad0d9587573d35d8b5153a0ba435beeee6f56c3dfe29b986ab4f7b3 roms/stage0_monitor
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13b45134a88c1c6db349cb40f82269cee9edfce71ac644dc0e137bad053bf5ce roms/stage1_assembler-0
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156f555fce5b02f52445652b1ed0b443295706cdfbe23c5a021bd4efc77179bb roms/stage1_assembler-1
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2c02c50958f489a660a4915d2a9e207a0c61f411d42628bdaf4dcf6bf7149a9d roms/stage1_assembler-2
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