Efthimis/9086
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Improved build system and project directory structure

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This commit is contained in:
(Tim) Efthimis Kritikos 2023-02-16 01:46:22 +00:00
parent 5e0c990394
commit ded47555a5
20 changed files with 422 additions and 72 deletions
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14
.gitignore vendored
View File

@ -3,9 +3,11 @@
*.lx2 *.lx2
*.o *.o
*.swp *.swp
cpu/boot_code.bin *.memdump
cpu/boot_code.txt *.lxt # Not sure when those crop up
cpu/brainfuck.bin boot_code/brainfuck.bin
cpu/brainfuck.txt boot_code/brainfuck.txt
cpu/memdump.txt boot_code/brainfuck_mandelbrot.bin
cpu/memdump.bin boot_code/brainfuck_mandelbrot.txt
system/boot_code.bin
system/boot_code.txt

35
Makefile Normal file
View File

@ -0,0 +1,35 @@
# This file is part of the 9086 project.
#
# Copyright (c) 2023 Efthymios Kritikos
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
SYSTEM_VVP=system/system.vvp
BOOT_CODE=boot_code/brainfuck.txt
GTKWSAVE=./gtkwave_savefile.gtkw
include common.mk
boot_code/%txt:
${Q}make ${MAKEOPTS} -C boot_code $(subst boot_code/,,$@)
${SYSTEM_VVP}:
${Q}make ${MAKEOPTS} -C system system.vvp
clean:
${Q}make ${MAKEOPTS} -C system clean
${Q}make ${MAKEOPTS} -C boot_code clean

3
README.md
View File

@ -12,8 +12,7 @@ A CPU that aims to be binary compatible with the 8086 and with as many optimisat
* [ ] Is superscalar * [ ] Is superscalar
### Building it ### Building it
To build it you need Icarus Verilog, bin86, GNU make, xxd and the posix coreutils. To build this project you need Icarus Verilog, bin86, GNU make, xxd and the posix coreutils and run `make` on the top level directory.
Go into the cpu directory and run `make`
At the time of development the versions used are : At the time of development the versions used are :

14
boot_code/Makefile Normal file
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@ -0,0 +1,14 @@
SOURCE=$(shell ls |grep asm$)
BINARIES=$(subst .asm,.txt,${SOURCE})
BUILD_FILES=${BINARIES}
BUILD_FILES+=$(subst .asm,.memdump,${SOURCE})
BUILD_FILES+=$(subst .asm,.lx2,${SOURCE})
BUILD_FILES+=$(subst .asm,.bin,${SOURCE})
all: ${BINARIES}
include ../common.mk
clean:
$(call QUIET_CLEAN,boot_code)
${Q}rm -f $(BUILD_FILES) *lxt

0
cpu/brainfuck.asm → boot_code/brainfuck.asm
View File

264
boot_code/brainfuck_mandelbrot.asm Normal file
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@ -0,0 +1,264 @@
; brainfuck.asm - Naive and unoptimised implementation of a brainfuck interpreter
;
; This file is part of the 9086 project.
;
; Copyright (c) 2023 Efthymios Kritikos
;
; This program 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.
;
; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
mov si,#prog
mov BX,#data
mov CX,#bracket
dec si
INTERPRET:
inc si
mov al,[si]
cmp al,#'+
jz WAS_PLUS
cmp al,#'-
jz WAS_MINUS
cmp al,#'>
jz WAS_MR
cmp al,#'<
jz WAS_ML
cmp al,#'[
jz WAS_PL
cmp al,#']
jz WAS_PR
cmp al,#'.
jz WAS_PRINT
jmp PROG_END
WAS_PLUS:
inc BYTE [BX]
JMP INTERPRET
WAS_MINUS:
dec BYTE [BX]
JMP INTERPRET
WAS_MR:
inc bx
JMP INTERPRET
WAS_ML:
dec bx
JMP INTERPRET
WAS_PL:
MOV AL,[BX]
cmp AL,#0
jz SKIP_CODE_BLOCK
;have to enter loop
MOV AX,SI
inc CX
inc CX
MOV SI,CX
mov [SI],AX
mov SI,AX
JMP INTERPRET
SKIP_CODE_BLOCK:
;have to skip loop
MOV DX,#0
SKIP_LOOP:
INC SI
mov AL,[SI]
CMP AL,#']
JZ WAS_CLOSE1
CMP AL,#'[
JZ WAS_OPEN1
JMP SKIP_LOOP
WAS_CLOSE1:
CMP DX,#0
JZ INTERPRET
DEC DX
JMP SKIP_LOOP
WAS_OPEN1:
INC DX
JMP SKIP_LOOP
WAS_PR:
mov AL,[BX]
cmp AL,#0
JZ EXIT_PR
MOV SI,CX
mov ax,[SI]
mov si,ax
JMP INTERPRET
EXIT_PR:
DEC CX
DEC CX
jmp INTERPRET
WAS_PRINT:
mov ah, #0x02
MOV DL,[BX]
int #0x21
JMP INTERPRET
PROG_END:
hlt
bracket: .BLKB 280
data: .BLKB 560
;prog db '++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++.f'
prog:.ASCII '+++++++++++++[->++>>>+++++>++>+<<<<<<]>>>>>++++++>--->>>>>>>>>>+++++++++++++++[['
.ASCII '>>>>>>>>>]+[<<<<<<<<<]>>>>>>>>>-]+[>>>>>>>>[-]>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>[-]+'
.ASCII '<<<<<<<+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>>+>>>>>>>>>>>>>>>>>>>>>>>>>>'
.ASCII '>+<<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+[>>>>>>[>>>>>>>[-]>>]<<<<<<<<<[<<<<<<<<<]>>'
.ASCII '>>>>>[-]+<<<<<<++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>+<<<<<<+++++++[-[->>>'
.ASCII '>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>+<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[[-]>>>>>>[>>>>>'
.ASCII '>>[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>'
.ASCII '[>>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<'
.ASCII '<<]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]>>>>>>>>>+++++++++++++++[['
.ASCII '>>>>>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+['
.ASCII '>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>['
.ASCII '-<<+>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<'
.ASCII '<<[>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<'
.ASCII '[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>'
.ASCII '>>>>[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+'
.ASCII '<<<<<<[->>>[-<<<+>>>]<<<[->>>+>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>'
.ASCII '>>>>>>>]<<<<<<<<<[>>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<<]>>[->>>>>>>>>+<<<<<<<<<]<<'
.ASCII '+>>>>>>>>]<<<<<<<<<[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<'
.ASCII '<]<+<<<<<<<<<]>>>>>>>>>[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>'
.ASCII '>>>>>>>>>>>>>>>>>>>>>>>]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>'
.ASCII '>>>>>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+>>>>>>>>>>>>>>>>>>>>>+<<<[<<<<<<'
.ASCII '<<<]>>>>>>>>>[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<<<<<<<<<[<<<<<'
.ASCII '<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-<<<+>>>]<<<[->'
.ASCII '>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<'
.ASCII '<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]<<<<<<<[->+>>>-<<<<]>>>>>>>>>+++++++++++++++++++'
.ASCII '+++++++>>[-<<<<+>>>>]<<<<[->>>>+<<[-]<<]>>[<<<<<<<+<[-<+>>>>+<<[-]]>[-<<[->+>>>-'
.ASCII '<<<<]>>>]>>>>>>>>>>>>>[>>[-]>[-]>[-]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-]>>>>>>[>>>>>'
.ASCII '[-<<<<+>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>[-<<<<<<<<'
.ASCII '<+>>>>>>>>>]>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>>>>>>]+>[-'
.ASCII ']>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>+>>>>>>>>]<<<'
.ASCII '<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<<<[->>[-<<+>>]<'
.ASCII '<[->>+>+<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>[->>>>'
.ASCII '>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[-]<->>>'
.ASCII '[-<<<+>[<->-<<<<<<<+>>>>>>>]<[->+<]>>>]<<[->>+<<]<+<<<<<<<<<]>>>>>>>>>[>>>>>>[-<'
.ASCII '<<<<+>>>>>]<<<<<[->>>>>+<<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>+>>>>>>>>'
.ASCII ']<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<<<[->>[-<<+'
.ASCII '>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>'
.ASCII '[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[-'
.ASCII ']<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>>>>>'
.ASCII '[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>'
.ASCII ']>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>'
.ASCII '>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>++++++++'
.ASCII '+++++++[[>>>>>>>>>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>>>>>>>>[-<<<<<<<+'
.ASCII '>>>>>>>]<<<<<<<[->>>>>>>+<<<<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>['
.ASCII '-]>>>]<<<<<<<<<[<<<<<<<<<]>>>>+>[-<-<<<<+>>>>>]>[-<<<<<<[->>>>>+<++<<<<]>>>>>[-<'
.ASCII '<<<<+>>>>>]<->+>]<[->+<]<<<<<[->>>>>+<<<<<]>>>>>>[-]<<<<<<+>>>>[-<<<<->>>>]+<<<<'
.ASCII '[->>>>->>>>>[>>[-<<->>]+<<[->>->[-<<<+>>>]<<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]'
.ASCII '+>>>>>>[>>>>>>>>>]>+<]]+>>>[-<<<->>>]+<<<[->>>-<[-<<+>>]<<[->>+<<<<<<<<<<<[<<<<<'
.ASCII '<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<'
.ASCII '[<<<<<<<<<]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>>>>>>>]<<<<<'
.ASCII '<<<+<[>[->>>>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>>[->>>+<<<]<]>[->>>-<<<<<<<<<'
.ASCII '<<<<<+>>>>>>>>>>>]<<]>[->>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>>+<<<]<<'
.ASCII '<<<<<<<<<<]>>>>[-]<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>[-<->]<[->+<]>>>>>>>>]<<<'
.ASCII '<<<<<+<[>[->>>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>[->>>>+<<<<]>]<[->>>>-<<<<<<<'
.ASCII '<<<<<<<+>>>>>>>>>>]<]>>[->>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>]>]<[->>>>+<<<<'
.ASCII ']<<<<<<<<<<<]>>>>>>+<<<<<<]]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>>>>>>>>>]<<<<<<<<<'
.ASCII '[>[->>>>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>>[->>>+<<<]<]>[->>>-<<<<<<<<<<<<<<'
.ASCII '+>>>>>>>>>>>]<<]>[->>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>>+<<<]<<<<<<<'
.ASCII '<<<<<]]>[-]>>[-]>[-]>>>>>[>>[-]>[-]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>[-<'
.ASCII '<<<+>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++['
.ASCII '[>>>>>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+'
.ASCII '[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>'
.ASCII '[-<<+>>]<<[->>+>+<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<'
.ASCII '<[>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<['
.ASCII '>[-]<->>>[-<<<+>[<->-<<<<<<<+>>>>>>>]<[->+<]>>>]<<[->>+<<]<+<<<<<<<<<]>>>>>>>>>['
.ASCII '>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]>'
.ASCII '>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>[-]>>>>+++++++++++++++[[>>>>>>>>>]<<<<<<<<<-<<<<<'
.ASCII '<<<<[<<<<<<<<<]>>>>>>>>>-]+[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<'
.ASCII '<<<<<<<<[<<<<<<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-'
.ASCII '<<<+>>>]<<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>'
.ASCII '>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>>>'
.ASCII '[-<<<->>>]<<<[->>>+<<<]>>>>>>>>]<<<<<<<<+<[>[->+>[-<-<<<<<<<<<<+>>>>>>>>>>>>[-<<'
.ASCII '+>>]<]>[-<<-<<<<<<<<<<+>>>>>>>>>>>>]<<<]>>[-<+>>[-<<-<<<<<<<<<<+>>>>>>>>>>>>]<]>'
.ASCII '[-<<+>>]<<<<<<<<<<<<<]]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>'
.ASCII '>>>>>>]<<<<<<<<+<[>[->+>>[-<<-<<<<<<<<<<+>>>>>>>>>>>[-<+>]>]<[-<-<<<<<<<<<<+>>>>'
.ASCII '>>>>>>>]<<]>>>[-<<+>[-<-<<<<<<<<<<+>>>>>>>>>>>]>]<[-<+>]<<<<<<<<<<<<]>>>>>+<<<<<'
.ASCII ']>>>>>>>>>[>>>[-]>[-]>[-]>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-]>[-]>>>>>[>>>>>>>[-<<<<<'
.ASCII '<+>>>>>>]<<<<<<[->>>>>>+<<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>+>[-<-<<<<+>>>>'
.ASCII '>]>>[-<<<<<<<[->>>>>+<++<<<<]>>>>>[-<<<<<+>>>>>]<->+>>]<<[->>+<<]<<<<<[->>>>>+<<'
.ASCII '<<<]+>>>>[-<<<<->>>>]+<<<<[->>>>->>>>>[>>>[-<<<->>>]+<<<[->>>-<[-<<+>>]<<[->>+<<'
.ASCII '<<<<<<<<<[<<<<<<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>[-<<->>]+<<[->>->[-<<<+>>>]<'
.ASCII '<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<'
.ASCII '<<<<<<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>[-<->]<[->+'
.ASCII '<]>>>>>>>>]<<<<<<<<+<[>[->>>>+<<[->>-<<<<<<<<<<<<<+>>>>>>>>>>[->>>+<<<]>]<[->>>-'
.ASCII '<<<<<<<<<<<<<+>>>>>>>>>>]<]>>[->>+<<<[->>>-<<<<<<<<<<<<<+>>>>>>>>>>]>]<[->>>+<<<'
.ASCII ']<<<<<<<<<<<]>>>>>[-]>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]]>>>>[-<<<<+>'
.ASCII '>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>>>>>>>]<<<<<<<<+<[>[->>>>+<<<[->>>-'
.ASCII '<<<<<<<<<<<<<+>>>>>>>>>>>[->>+<<]<]>[->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<<]>[->>>+<<['
.ASCII '->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>+<<]<<<<<<<<<<<<]]>>>>[-]<<<<]>>>>[-<<<<+>>'
.ASCII '>>]<<<<[->>>>+>[-]>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]>>>>>>>>>[>>>>>>'
.ASCII '>>>]<<<<<<<<<[>[->>>>+<<<[->>>-<<<<<<<<<<<<<+>>>>>>>>>>>[->>+<<]<]>[->>-<<<<<<<<'
.ASCII '<<<<<+>>>>>>>>>>>]<<]>[->>>+<<[->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>+<<]<<<<<<<<'
.ASCII '<<<<]]>>>>>>>>>[>>[-]>[-]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-]>[-]>>>>>[>>>>>[-<<<<+'
.ASCII '>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[-<<<<<+>>>>>'
.ASCII ']<<<<<[->>>>>+<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>'
.ASCII '>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>+>>'
.ASCII '>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>[-<<+'
.ASCII '>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>'
.ASCII '[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[-'
.ASCII ']<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>>>>>'
.ASCII '[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<'
.ASCII '<<[->>>[-<<<+>>>]<<<[->>>+>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>'
.ASCII '>>>]<<<<<<<<<[>>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<<]>>[->>>>>>>>>+<<<<<<<<<]<<+>>>'
.ASCII '>>>>>]<<<<<<<<<[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+'
.ASCII '<<<<<<<<<]>>>>>>>>>[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>'
.ASCII '>>>>>>>>>>>>>>>>>>>]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>>>>>'
.ASCII '>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+>>>>>>>>>>>>>>>>>>>>>+<<<[<<<<<<<<<]'
.ASCII '>>>>>>>>>[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<<<<<<<<<[<<<<<<<<<'
.ASCII ']>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-<<<+>>>]<<<[->>>+<'
.ASCII '<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>'
.ASCII '>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>->>[-<<<<+>>>>]<<<<[->>>>+<<[-]<<]>>]<<+>>>>[-<<<<'
.ASCII '->>>>]+<<<<[->>>>-<<<<<<.>>]>>>>[-<<<<<<<.>>>>>>>]<<<[-]>[-]>[-]>[-]>[-]>[-]>>>['
.ASCII '>[-]>[-]>[-]>[-]>[-]>[-]>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>[-]>>>>]<<<<<<<<<'
.ASCII '[<<<<<<<<<]>+++++++++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>+>>>>>>>>>+<<<<<<<<'
.ASCII '<<<<<<[<<<<<<<<<]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+[-]>>[>>>>>>>>>]<<<<<'
.ASCII '<<<<[>>>>>>>[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<<<<<<[<<<<<<<<<]>>>>>>>[-]+>>>]<<<<'
.ASCII '<<<<<<]]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+>>[>+>>>>[-<<<<->>>>]<<<<[->>>'
.ASCII '>+<<<<]>>>>>>>>]<<+<<<<<<<[>>>>>[->>+<<]<<<<<<<<<<<<<<]>>>>>>>>>[>>>>>>>>>]<<<<<'
.ASCII '<<<<[>[-]<->>>>>>>[-<<<<<<<+>[<->-<<<+>>>]<[->+<]>>>>>>>]<<<<<<[->>>>>>+<<<<<<]<'
.ASCII '+<<<<<<<<<]>>>>>>>-<<<<[-]+<<<]+>>>>>>>[-<<<<<<<->>>>>>>]+<<<<<<<[->>>>>>>->>[>>'
.ASCII '>>>[->>+<<]>>>>]<<<<<<<<<[>[-]<->>>>>>>[-<<<<<<<+>[<->-<<<+>>>]<[->+<]>>>>>>>]<<'
.ASCII '<<<<[->>>>>>+<<<<<<]<+<<<<<<<<<]>+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>+<<<'
.ASCII '<<[<<<<<<<<<]>>>>>>>>>[>>>>>[-<<<<<->>>>>]+<<<<<[->>>>>->>[-<<<<<<<+>>>>>>>]<<<<'
.ASCII '<<<[->>>>>>>+<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>>>>[-<'
.ASCII '<<<<<<->>>>>>>]+<<<<<<<[->>>>>>>-<<[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<<<<<<<<<<<[<<<'
.ASCII '<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<'
.ASCII '<<[<<<<<<<<<]>>>>[-]<<<+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>-<<<<<[<<<<<<<'
.ASCII '<<]]>>>]<<<<.>>>>>>>>>>[>>>>>>[-]>>>]<<<<<<<<<[<<<<<<<<<]>++++++++++[-[->>>>>>>>'
.ASCII '>+<<<<<<<<<]>>>>>>>>>]>>>>>+>>>>>>>>>+<<<<<<<<<<<<<<<[<<<<<<<<<]>>>>>>>>[-<<<<<<'
.ASCII '<<+>>>>>>>>]<<<<<<<<[->>>>>>>>+[-]>[>>>>>>>>>]<<<<<<<<<[>>>>>>>>[-<<<<<<<+>>>>>>'
.ASCII '>]<<<<<<<[->>>>>>>+<<<<<<<<[<<<<<<<<<]>>>>>>>>[-]+>>]<<<<<<<<<<]]>>>>>>>>[-<<<<<'
.ASCII '<<<+>>>>>>>>]<<<<<<<<[->>>>>>>>+>[>+>>>>>[-<<<<<->>>>>]<<<<<[->>>>>+<<<<<]>>>>>>'
.ASCII '>>]<+<<<<<<<<[>>>>>>[->>+<<]<<<<<<<<<<<<<<<]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>[-]<-'
.ASCII '>>>>>>>>[-<<<<<<<<+>[<->-<<+>>]<[->+<]>>>>>>>>]<<<<<<<[->>>>>>>+<<<<<<<]<+<<<<<<'
.ASCII '<<<]>>>>>>>>-<<<<<[-]+<<<]+>>>>>>>>[-<<<<<<<<->>>>>>>>]+<<<<<<<<[->>>>>>>>->[>>>'
.ASCII '>>>[->>+<<]>>>]<<<<<<<<<[>[-]<->>>>>>>>[-<<<<<<<<+>[<->-<<+>>]<[->+<]>>>>>>>>]<<'
.ASCII '<<<<<[->>>>>>>+<<<<<<<]<+<<<<<<<<<]>+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>'
.ASCII '+>>>>>>>>>>>>>>>>>>>>>>>>>>>+<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[-<<<<<<->>>>>>]+<'
.ASCII '<<<<<[->>>>>>->>[-<<<<<<<<+>>>>>>>>]<<<<<<<<[->>>>>>>>+<<<<<<<<<<<<<<<<<[<<<<<<<'
.ASCII '<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>>>>>[-<<<<<<<<->>>>>>>>]+<<<<<<<<[->>>>>>>>'
.ASCII '-<<[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>'
.ASCII '>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>[-]<<<++++'
.ASCII '+[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>->>>>>>>>>>>>>>>>>>>>>>>>>>>-<<<<<<[<<<<'
.ASCII '<<<<<]]>>>]'

49
common.mk Normal file
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@ -0,0 +1,49 @@
QUIET=1
ifeq "${QUIET}" "1"
QUIET_AS = @echo ' AS '$@;
QUIET_VVP = @echo ' VVP '$@;
QUIET_IVERILOG = @echo ' IVERILOG '$@;
QUIET_CLEAN = @printf ' CLEAN %s\n' $1;
Q = @
MAKEOPTS=--no-print-directory
.SILENT:
else
Q =
endif
run: ${BOOT_CODE} ${SYSTEM_VVP}
${QUIET_VVP}
${Q}vvp "${SYSTEM_VVP}" -lxt2 +BOOT_CODE="$<" +WAVEFORM="$(subst .txt,.lx2,$<)" +MEMDUMP="$(subst .txt,.memdumptxt,$<)"
${Q}grep -v '^//' "$(subst .txt,.memdumptxt,$<)" | xxd -ps -c 2 -r > "$(subst .txt,.memdump,$<)"
${Q}rm "$(subst .txt,.memdumptxt,$<)"
wave: $(subst .txt,.wave,${BOOT_CODE})
disas: $(subst .txt,.disas,${BOOT_CODE})
# Assembling code
%.txt:%.bin
${Q}dd if=/dev/zero bs=1 count=16384 of="$(subst .bin,.stage,$<)" status=none
${Q}dd if="$<" of="$(subst .bin,.stage,$<)" conv=notrunc,nocreat status=none
${Q}xxd -ps -c 2 "$(subst .bin,.stage,$<)" > "$@"
${Q}rm "$(subst .bin,.stage,$<)"
%.bin:%.asm
${QUIET_AS}
${Q}as86 -0 "$<" -b "$@"
# Running simulation
%.lx2 %.memdump: %.txt ${SYSTEM_VVP}
${QUIET_VVP}
${Q}vvp "${SYSTEM_VVP}" -lxt2 +BOOT_CODE="$<" +WAVEFORM="$(subst .txt,.lx2,$<)" +MEMDUMP="$(subst .txt,.memdumptxt,$<)"
${Q}grep -v '^//' "$(subst .txt,.memdumptxt,$<)" | xxd -ps -c 2 -r > "$(subst .txt,.memdump,$<)"
${Q}rm "$(subst .txt,.memdumptxt,$<)"
.PHONY: disas
%.disas: %.bin
objdump -D -b binary -m i8086 $^ | less
# Tools
.PHONY: %.wave
%.wave : %.lx2
gtkwave "$<" "${GTKWSAVE}"

59
cpu/Makefile
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@ -1,59 +0,0 @@
# This file is part of the 9086 project.
#
# Copyright (c) 2023 Efthymios Kritikos
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
SOURCES=processor.v testbench.v memory.v registers.v alu.v
INCLUDES=proc_state_def.v alu_header.v config.v
VVP=processor.vvp
.PHONY: brainf
brainf: ${VVP} brainfuck.txt
vvp ${VVP} +BOOT_CODE=brainfuck.txt
grep -v '^//' memdump.txt | xxd -ps -c 2 -r > memdump.bin
.PHONY: run
run: ${VVP} boot_code.txt
vvp ${VVP}
grep -v '^//' memdump.txt | xxd -ps -c 2 -r > memdump.bin
.PHONY: build
build: ${VVP}
.PHONY: wave
wave: ${VVP} brainfuck.txt
vvp ${VVP} -lxt2 #+BOOT_CODE=brainfuck.txt
gtkwave test.lx2 gtkwave_savefile.gtkw
grep -v '^//' memdump.txt | xxd -ps -c 2 -r > memdump.bin
${VVP} : ${SOURCES} ${INCLUDES}
iverilog -g2012 ${SOURCES} -o $@
%.txt:%.bin
dd if=/dev/zero bs=1 count=16384 of=$(subst .bin,.stage,$^) status=none
dd if=$^ of=$(subst .bin,.stage,$^) conv=notrunc,nocreat status=none
xxd -ps -c 2 $(subst .bin,.stage,$^) > $@
rm $(subst .bin,.stage,$^)
%.bin:%.asm
as86 -0 $< -b $@
.PHONY: disas
disas: brainfuck.bin
objdump -D -b binary -m i8086 $^ | less
.PHONY: clean
clean:
rm -f ${VVP} test.lx2 boot_code.txt boot_code.bin brainfuck.txt brainfuck.bin memdump.txt

BIN
cpu/test
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Binary file not shown.

0
cpu/gtkwave_savefile.gtkw → gtkwave_savefile.gtkw
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35
system/Makefile Normal file
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@ -0,0 +1,35 @@
# This file is part of the 9086 project.
#
# Copyright (c) 2023 Efthymios Kritikos
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
SOURCES=processor.v testbench.v memory.v registers.v alu.v
INCLUDES=proc_state_def.v alu_header.v config.v
SYSTEM_VVP=system.vvp
BOOT_CODE=boot_code.txt
GTKWSAVE=../gtkwave_savefile.gtkw
include ../common.mk
# COMPILING
${SYSTEM_VVP} : ${SOURCES} ${INCLUDES}
${QUIET_IVERILOG}
${Q}iverilog -g2012 ${SOURCES} -o $@
.PHONY: clean
clean:
$(call QUIET_CLEAN,system)
${Q}rm -f ${SYSTEM_VVP} *.lx2 boot_code.txt boot_code.bin *memdump *memdumptxt

0
cpu/alu.v → system/alu.v
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0
cpu/alu_header.v → system/alu_header.v
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1
cpu/boot_code.asm → system/boot_code.asm
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@ -16,6 +16,7 @@ inc [si]
inc [si] inc [si]
inc [si] inc [si]
dec [si] dec [si]
dec cx
cmp CX,#0x00 cmp CX,#0x00
jz start jz start
HLT HLT

0
cpu/config.v → system/config.v
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6
cpu/memory.v → system/memory.v
View File

@ -21,8 +21,10 @@ module mem(input [19:0] address,inout wire [15:0] data ,input rd,input wr,input
reg [15:0] memory [0:8191]; reg [15:0] memory [0:8191];
initial begin initial begin
string boot_code; string boot_code;
if(!$value$plusargs("BOOT_CODE=%s",boot_code)) if(!$value$plusargs("BOOT_CODE=%s",boot_code))begin
boot_code="boot_code.txt"; $display("No boot code specified. Please add +BOOT_CODE=<path> to your vvp args");
$finish;
end
$readmemh(boot_code, memory); $readmemh(boot_code, memory);
end end

0
cpu/proc_state_def.v → system/proc_state_def.v
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0
cpu/processor.v → system/processor.v
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0
cpu/registers.v → system/registers.v
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14
cpu/testbench.v → system/testbench.v
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@ -38,9 +38,17 @@ clock_gen #(.FREQ(1000)) u1(clk_enable, clock);
assign romcs=0; assign romcs=0;
integer cycles=0; integer cycles=0;
string memdump_name;
initial begin initial begin
$dumpfile("test.lx2"); string waveform_name;
if(!$value$plusargs("WAVEFORM=%s",waveform_name))begin
waveform_name="waveform.lx2";
end
$dumpfile(waveform_name);
$dumpvars(0,p,u1); $dumpvars(0,p,u1);
if(!$value$plusargs("MEMDUMP=%s",memdump_name))begin
memdump_name="memdump.txt";
end
reset = 0; reset = 0;
clk_enable <= 1; clk_enable <= 1;
@ -51,7 +59,7 @@ end
always @(posedge HALT) begin always @(posedge HALT) begin
$display("Processor halted.\nCycles run for: %d",cycles); $display("Processor halted.\nCycles run for: %d",cycles);
$writememh("memdump.txt", sysmem.memory); $writememh(memdump_name, sysmem.memory);
#(`CPU_SPEED) //Just for the waveform #(`CPU_SPEED) //Just for the waveform
$finish; $finish;
end end
@ -59,7 +67,7 @@ end
always @(posedge ERROR) begin always @(posedge ERROR) begin
clk_enable <= 0; clk_enable <= 0;
$display("PROCESSOR RUN INTO AN ERROR.\nCycles run for: %d",cycles); $display("PROCESSOR RUN INTO AN ERROR.\nCycles run for: %d",cycles);
$writememh("memdump.txt", sysmem.memory); $writememh(memdump_name, sysmem.memory);
#(`CPU_SPEED) //Just for the waveform #(`CPU_SPEED) //Just for the waveform
$finish; $finish;
end end