Eliminated stage1_assembler-0's need for memory
This commit is contained in:
parent
785af749a8
commit
45d9394d43
|
@ -1,7 +1,7 @@
|
||||||
## Copyright (C) 2016 Jeremiah Orians
|
## Copyright (C) 2016 Jeremiah Orians
|
||||||
## This file is part of stage0.
|
## This file is part of stage0.
|
||||||
##
|
##
|
||||||
## stage0 is free software: you an redistribute it and/or modify
|
## stage0 is free software: you can redistribute it and/or modify
|
||||||
## it under the terms of the GNU General Public License as published by
|
## it under the terms of the GNU General Public License as published by
|
||||||
## the Free Software Foundation, either version 3 of the License, or
|
## the Free Software Foundation, either version 3 of the License, or
|
||||||
## (at your option) any later version.
|
## (at your option) any later version.
|
||||||
|
@ -14,51 +14,52 @@
|
||||||
## You should have received a copy of the GNU General Public License
|
## You should have received a copy of the GNU General Public License
|
||||||
## along with stage0. If not, see <http://www.gnu.org/licenses/>.
|
## along with stage0. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
# start
|
#:start
|
||||||
2D2A000f # LOADUI R10 0x0F ; Byte mask
|
|
||||||
2D2B0001 # LOADUI R11 1 ; Our toggle
|
2D2B0001 # LOADUI R11 1 ; Our toggle
|
||||||
2D2D0600 # LOADUI R13 0x600 ; Where we are starting our Stack
|
# ;; R14 is storing our condition code
|
||||||
|
# ;; R15 is storing our nybble
|
||||||
|
|
||||||
# ;; Prep TAPE_01
|
# ;; Prep TAPE_01
|
||||||
2D201100 # LOADUI R0 0x1100
|
2D201100 # LOADUI R0 0x1100
|
||||||
42100000 # FOPEN_READ
|
42100000 # FOPEN_READ
|
||||||
|
|
||||||
# ;; Prep TAPE_02
|
# ;; Prep TAPE_02
|
||||||
2D201101 # LOADUI R0 0x1101
|
2D201101 # LOADUI R0 0x1101
|
||||||
42100001 # FOPEN_WRITE
|
42100001 # FOPEN_WRITE
|
||||||
|
|
||||||
# loop
|
# ;; Main program loop
|
||||||
|
# ;; Halts when done
|
||||||
|
#:loop 14
|
||||||
2D211100 # LOADUI R1 0x1100 ; Read from tape_01
|
2D211100 # LOADUI R1 0x1100 ; Read from tape_01
|
||||||
42100100 # FGETC ; Read a Char
|
42100100 # FGETC ; Read a Char
|
||||||
|
|
||||||
# ;; Check for EOF
|
# ;; Check for EOF
|
||||||
12E00000 # CMPI R14 R0 0
|
2CC000b8 # JUMP.NP R0 @finish
|
||||||
2C4E0008 # JUMP.GE R14 @.L1
|
3C000034 # JUMP @hex ; Convert it
|
||||||
2D0D00c4 # CALLI R13 @finish
|
|
||||||
|
|
||||||
# .L1
|
# :loop_1 24
|
||||||
2D210000 # LOADUI R1 0 ; Write to Char to TTY
|
2CC0fff0 # JUMP.NP R0 @loop ; Don't use nonhex chars
|
||||||
42100200 # FPUTC ; Print the Char
|
2C9B0010 # JUMP.Z R11 @loop_2 ; Jump if toggled
|
||||||
2D0D0038 # CALLI R13 @hex ; Convert it
|
|
||||||
12E00000 # CMPI R14 R0 0 ; Check if it is hex
|
|
||||||
2C8Effdc # JUMP.L R14 @loop ; Don't use nonhex chars
|
|
||||||
2C9B0010 # JUMP.Z R11 @.L99 ; Jump if toggled
|
|
||||||
|
|
||||||
# ;; Process first byte of pair
|
# ;; Process first byte of pair
|
||||||
05020F0A # AND R15 R0 R10 ; Store First nibble
|
B0F0000f # ANDI R15 R0 0xF ; Store First nibble
|
||||||
0D00002B # FALSE R11 ; Flip the toggle
|
0D00002B # FALSE R11 ; Flip the toggle
|
||||||
3C00ffcc # JUMP @loop
|
3C00ffe0 # JUMP @loop
|
||||||
|
|
||||||
# .L99
|
# :loop_2 38
|
||||||
2D5F0004 # SL0I R15 4 ; Shift our first nibble
|
2D5F0004 # SL0I R15 4 ; Shift our first nibble
|
||||||
0502000A # AND R0 R0 R10 ; Mask out top
|
B000000f # ANDI R0 R0 0xF ; Mask out top
|
||||||
0500000F # ADD R0 R0 R15 ; Combine nibbles
|
0500000F # ADD R0 R0 R15 ; Combine nibbles
|
||||||
2D1B0001 # LOADI R11 1 ; Flip the toggle
|
2D1B0001 # LOADI R11 1 ; Flip the toggle
|
||||||
2D211101 # LOADUI R1 0x1101 ; Write the combined byte
|
2D211101 # LOADUI R1 0x1101 ; Write the combined byte
|
||||||
42100200 # FPUTC ; To TAPE_02
|
42100200 # FPUTC ; To TAPE_02
|
||||||
3C00ffb0 # JUMP @loop ; Try to get more bytes
|
3C00ffc4 # JUMP @loop ; Try to get more bytes
|
||||||
|
|
||||||
# hex
|
# ;; Hex function
|
||||||
|
# ;; Converts Ascii chars to their hex values
|
||||||
|
# ;; Or -1 if not a hex char
|
||||||
|
# ;; Returns to whatever called it
|
||||||
|
#:hex 54
|
||||||
# ;; Deal with line comments starting with #
|
# ;; Deal with line comments starting with #
|
||||||
1FE00023 # CMPUI R14 R0 35
|
1FE00023 # CMPUI R14 R0 35
|
||||||
2C5E0060 # JUMP.E R14 @ascii_comment
|
2C5E0060 # JUMP.E R14 @ascii_comment
|
||||||
|
@ -86,23 +87,19 @@
|
||||||
# ;; Ignore the rest
|
# ;; Ignore the rest
|
||||||
3C00001c # JUMP @ascii_other
|
3C00001c # JUMP @ascii_other
|
||||||
|
|
||||||
# ascii_num
|
# :ascii_num 98
|
||||||
11000030 # SUBUI R0 R0 48
|
11000030 # SUBUI R0 R0 48
|
||||||
0D01001D # RET R13
|
3C00ff88 # JUMP @loop_1
|
||||||
|
# :ascii_low a0
|
||||||
# ascii_low
|
|
||||||
11000057 # SUBUI R0 R0 87
|
11000057 # SUBUI R0 R0 87
|
||||||
0D01001D # RET R13
|
3C00ff80 # JUMP @loop_1
|
||||||
|
# :ascii_high a8
|
||||||
# ascii_high
|
|
||||||
11000037 # SUBUI R0 R0 55
|
11000037 # SUBUI R0 R0 55
|
||||||
0D01001D # RET R13
|
3C00ff78 # JUMP @loop_1
|
||||||
|
# :ascii_other b0
|
||||||
# ascii_other
|
|
||||||
0D000030 # TRUE R0
|
0D000030 # TRUE R0
|
||||||
0D01001D # RET R13
|
3C00ff70 # JUMP @loop_1
|
||||||
|
# :ascii_comment b8
|
||||||
# ascii_comment
|
|
||||||
2D211100 # LOADUI R1 0x1100 ; Read from TAPE_01
|
2D211100 # LOADUI R1 0x1100 ; Read from TAPE_01
|
||||||
42100100 # FGETC ; Read another char
|
42100100 # FGETC ; Read another char
|
||||||
1FE0000a # CMPUI R14 R0 10 ; Stop at the end of line
|
1FE0000a # CMPUI R14 R0 10 ; Stop at the end of line
|
||||||
|
@ -111,7 +108,10 @@
|
||||||
2C6Effec # JUMP.NE R14 @ascii_comment ; Otherwise keep looping
|
2C6Effec # JUMP.NE R14 @ascii_comment ; Otherwise keep looping
|
||||||
3C00ffe0 # JUMP @ascii_other
|
3C00ffe0 # JUMP @ascii_other
|
||||||
|
|
||||||
# finish
|
# ;; Finish function
|
||||||
|
# ;; Cleans up at the end of the program
|
||||||
|
# ;; Performs the HALT
|
||||||
|
# :finish d4
|
||||||
2D201100 # LOADUI R0 0x1100 ; Close TAPE_01
|
2D201100 # LOADUI R0 0x1100 ; Close TAPE_01
|
||||||
42100002 # FCLOSE
|
42100002 # FCLOSE
|
||||||
2D201101 # LOADUI R0 0x1101 ; Close TAPE_02
|
2D201101 # LOADUI R0 0x1101 ; Close TAPE_02
|
||||||
|
|
|
@ -15,9 +15,7 @@
|
||||||
; along with stage0. If not, see <http://www.gnu.org/licenses/>.
|
; along with stage0. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
:start
|
:start
|
||||||
LOADUI R10 0x0F ; Byte mask
|
|
||||||
LOADUI R11 1 ; Our toggle
|
LOADUI R11 1 ; Our toggle
|
||||||
LOADUI R13 0x600 ; Where we are starting our Stack
|
|
||||||
;; R14 is storing our condition code
|
;; R14 is storing our condition code
|
||||||
;; R15 is storing our nybble
|
;; R15 is storing our nybble
|
||||||
|
|
||||||
|
@ -37,26 +35,21 @@
|
||||||
FGETC ; Read a Char
|
FGETC ; Read a Char
|
||||||
|
|
||||||
;; Check for EOF
|
;; Check for EOF
|
||||||
CMPI R14 R0 0
|
JUMP.NP R0 @finish
|
||||||
JUMP.GE R14 @.L1
|
|
||||||
CALLI R13 @finish
|
|
||||||
|
|
||||||
:.L1
|
JUMP @hex ; Convert it
|
||||||
LOADUI R1 0 ; Write to Char to TTY
|
:loop_1
|
||||||
FPUTC ; Print the Char
|
JUMP.NP R0 @loop ; Don't use nonhex chars
|
||||||
CALLI R13 @hex ; Convert it
|
JUMP.Z R11 @loop_2 ; Jump if toggled
|
||||||
CMPI R14 R0 0 ; Check if it is hex
|
|
||||||
JUMP.L R14 @loop ; Don't use nonhex chars
|
|
||||||
JUMP.Z R11 @.L99 ; Jump if toggled
|
|
||||||
|
|
||||||
;; Process first byte of pair
|
;; Process first byte of pair
|
||||||
AND R15 R0 R10 ; Store First nibble
|
ANDI R15 R0 0xF ; Store First nibble
|
||||||
FALSE R11 ; Flip the toggle
|
FALSE R11 ; Flip the toggle
|
||||||
JUMP @loop
|
JUMP @loop
|
||||||
|
|
||||||
:.L99
|
:loop_2
|
||||||
SL0I R15 4 ; Shift our first nibble
|
SL0I R15 4 ; Shift our first nibble
|
||||||
AND R0 R0 R10 ; Mask out top
|
ANDI R0 R0 0xF ; Mask out top
|
||||||
ADD R0 R0 R15 ; Combine nibbles
|
ADD R0 R0 R15 ; Combine nibbles
|
||||||
LOADI R11 1 ; Flip the toggle
|
LOADI R11 1 ; Flip the toggle
|
||||||
LOADUI R1 0x1101 ; Write the combined byte
|
LOADUI R1 0x1101 ; Write the combined byte
|
||||||
|
@ -98,16 +91,16 @@
|
||||||
|
|
||||||
:ascii_num
|
:ascii_num
|
||||||
SUBUI R0 R0 48
|
SUBUI R0 R0 48
|
||||||
RET R13
|
JUMP @loop_1
|
||||||
:ascii_low
|
:ascii_low
|
||||||
SUBUI R0 R0 87
|
SUBUI R0 R0 87
|
||||||
RET R13
|
JUMP @loop_1
|
||||||
:ascii_high
|
:ascii_high
|
||||||
SUBUI R0 R0 55
|
SUBUI R0 R0 55
|
||||||
RET R13
|
JUMP @loop_1
|
||||||
:ascii_other
|
:ascii_other
|
||||||
TRUE R0
|
TRUE R0
|
||||||
RET R13
|
JUMP @loop_1
|
||||||
:ascii_comment
|
:ascii_comment
|
||||||
LOADUI R1 0x1100 ; Read from TAPE_01
|
LOADUI R1 0x1100 ; Read from TAPE_01
|
||||||
FGETC ; Read another char
|
FGETC ; Read another char
|
||||||
|
|
|
@ -5,6 +5,6 @@ b3a910f18c6bc0ef4aa7a53cb3f0216a9f143319da67ed2a02210fe88b1e1131 roms/forth
|
||||||
2b9727381aec15a504c0898189fbc2344209d8e04451e3fa5d743e08e38f64cf roms/M0
|
2b9727381aec15a504c0898189fbc2344209d8e04451e3fa5d743e08e38f64cf roms/M0
|
||||||
24a4d74eb2eb7a82e68335643855658b27b5a6c3b13db473539f3e08d6f26ceb roms/SET
|
24a4d74eb2eb7a82e68335643855658b27b5a6c3b13db473539f3e08d6f26ceb roms/SET
|
||||||
0a427b14020354d1c785f5f900677e0059fce8f8d4456e9c19e5528cb17101eb roms/stage0_monitor
|
0a427b14020354d1c785f5f900677e0059fce8f8d4456e9c19e5528cb17101eb roms/stage0_monitor
|
||||||
f8289dfa9dd92e8a1a48f9a624d5d19e4f312b91bc3d1e0796474b46157ec47a roms/stage1_assembler-0
|
85e5c06ac07f2b97d01dfb5454f5a698b3ec6c21fe53bf3fa57b386aac7b9601 roms/stage1_assembler-0
|
||||||
e4f0ed6e78ae79bb5e4a4fbde36f085dd0469cd6ae036dce5953b3d1c89801ce roms/stage1_assembler-1
|
e4f0ed6e78ae79bb5e4a4fbde36f085dd0469cd6ae036dce5953b3d1c89801ce roms/stage1_assembler-1
|
||||||
61c1b0f2f628847d9491bd678ac7a23231527cc36493b321612f191674ff3c99 roms/stage1_assembler-2
|
61c1b0f2f628847d9491bd678ac7a23231527cc36493b321612f191674ff3c99 roms/stage1_assembler-2
|
||||||
|
|
Loading…
Reference in New Issue