From e29bfb5f7e0768a30840edfbb590ff32217a1293 Mon Sep 17 00:00:00 2001 From: Steven Hugg Date: Sun, 27 May 2018 11:13:06 -0700 Subject: [PATCH] working on assembler --- index.html | 2 +- presets/verilog/cpu_platform.v | 8 +- presets/verilog/femto16.json | 2 + presets/verilog/test2.asm | 160 +++++++++++++++++++++++++-------- src/worker/assembler.js | 5 +- 5 files changed, 138 insertions(+), 39 deletions(-) diff --git a/index.html b/index.html index 949a2323..b5f189d3 100644 --- a/index.html +++ b/index.html @@ -42,7 +42,7 @@ ga('send', 'pageview');
  • New File...
  • Share File as GitHub Gist...
  • Revert to Original...
    • -
  • Download File
    • +
  • Download Source File
  • Download ROM Image
  • Record Video...
  • diff --git a/presets/verilog/cpu_platform.v b/presets/verilog/cpu_platform.v index 0d8dda6c..2c636a74 100644 --- a/presets/verilog/cpu_platform.v +++ b/presets/verilog/cpu_platform.v @@ -7,9 +7,10 @@ `include "sound_generator.v" `include "cpu16.v" -module cpu_platform(clk, reset, hsync, vsync, rgb); +module cpu_platform(clk, reset, hsync, vsync, hpaddle, vpaddle, rgb); input clk, reset; + input hpaddle, vpaddle; output hsync, vsync; output [3:0] rgb; @@ -114,9 +115,12 @@ module cpu_platform(clk, reset, hsync, vsync, rgb); wire [15:0] cpu_ram_addr; wire busy; wire [15:0] cpu_bus; + wire [15:0] flags = {11'b0, vsync, hsync, vpaddle, hpaddle, display_on}; assign cpu_bus = cpu_ram_addr[15] - ? program_rom[cpu_ram_addr[9:0]] + ? (cpu_ram_addr == 16'hffff) + ? flags + : program_rom[cpu_ram_addr[9:0]] : ram_read; CPU16 cpu( diff --git a/presets/verilog/femto16.json b/presets/verilog/femto16.json index 56e6b51e..f81b7f5c 100644 --- a/presets/verilog/femto16.json +++ b/presets/verilog/femto16.json @@ -5,6 +5,7 @@ "reg":{"bits":3, "toks":["ax", "bx", "cx", "dx", "ex", "fx", "sp", "ip"]}, "unop":{"bits":3, "toks":["zero","loada","inc","dec","asl","lsr","rol","ror"]}, "binop":{"bits":3, "toks":["or","and","xor","mov","add","sub","adc","sbb"]}, + "imm5":{"bits":5}, "imm8":{"bits":8}, "imm16":{"bits":16}, "rel8":{"bits":8, "iprel":true, "ipofs":1} @@ -24,6 +25,7 @@ {"fmt":"push ~reg", "bits":["01010",0,"00000","110"]}, {"fmt":"pop ~reg", "bits":["01001",0,"00001","110"]}, {"fmt":"rts", "bits":["01001","111","00001","110"]}, + {"fmt":"mov ~reg,[~reg+~imm5]", "bits":["01001",0,2,1]}, {"fmt":"jsr ~reg", "bits":["01110","111","00",0,"110"]}, {"fmt":"jsr ~imm16", "bits":["0001110001011000",0,"0111011100100110"]}, {"fmt":"jmp ~imm16", "bits":["0001111101011000",0]}, diff --git a/presets/verilog/test2.asm b/presets/verilog/test2.asm index 2ee95a0d..e19b3cbd 100644 --- a/presets/verilog/test2.asm +++ b/presets/verilog/test2.asm @@ -14,25 +14,44 @@ .org 0x8000 .len 1024 +.define ScreenBuffer $6000 +.define PageTable $7e00 +.define SpriteTable $7f00 + jmp Start Start: - mov sp,@$6fff + mov sp,@$6fff mov fx,@InitPageTable jsr fx - mov ax,@$1ffe + mov ax,@$0700 mov fx,@ClearTiles -; jsr ex + jsr fx mov fx,@DrawMaze jsr fx mov bx,@HelloWorld - mov cx,@$1f00 + mov cx,@$0200 mov dx,@$6001 mov fx,@WriteString jsr fx mov fx,@ClearSprites jsr fx - reset + mov fx,@InitSprites + jsr fx +GameLoop: + mov fx,@WaitVSync + jsr fx + mov fx,@MoveSprites + jsr fx + jmp GameLoop + +WaitVSync: + mov bx,@$FFFF + mov ax,[bx] + and ax,#16 + bz WaitVSync + rts + WriteString: mov ax,[bx] bz StringDone @@ -45,7 +64,7 @@ StringDone: rts DrawMaze: - mov dx,@$6040 + mov dx,@$6080 mov bx,@MazeData DrawMazeLoop: mov ax,[bx] @@ -65,20 +84,19 @@ ShiftMazeChar: and ex,#$f add ex,@MazeChars mov ex,[ex] - or ex,@$1e00 ; store to video buffer mov [dx],ex inc dx dec fx bnz ShiftMazeChar mov ax,dx - sub ax,@$6340 + sub ax,@$6380 bnz DrawMazeLoop rts InitPageTable: - mov ax,@$6000 ; screen buffer - mov bx,@$7e00 ; page table start + mov ax,@ScreenBuffer ; screen buffer + mov bx,@PageTable ; page table start mov cx,#32 ; 32 rows InitPTLoop: mov [bx],ax @@ -88,7 +106,7 @@ InitPTLoop: bnz InitPTLoop rts ClearTiles: - mov bx,@$6000 + mov bx,@ScreenBuffer mov cx,@$3c0 ClearLoop: mov [bx],ax @@ -97,54 +115,126 @@ ClearLoop: bnz ClearLoop rts ClearSprites: - mov bx,@$7f00 mov ax,#0 mov cx,#$40 + mov dx,@SpriteTable ClearSLoop: - mov ax,[bx] - add ax,@$101 - mov [bx],ax - inc bx + mov [dx],ax + inc dx dec cx bnz ClearSLoop + rts +InitSprites: + mov bx,@SpriteInitData + mov cx,#10 + mov dx,@SpriteTable +InitSLoop: + mov ax,[bx] + mov [dx],ax + inc bx + inc dx + dec cx + bnz InitSLoop + rts +MoveSprites: + mov dx,@SpriteTable + mov cx,#5 +MoveSLoop: + mov ax,[dx] ; x/y pos + mov bx,[dx+1] ; attributes/dir + and bx,#3 ; bx = direction (0-3) + add bx,@DirectionXY + add ax,[bx] ; lookup & add to x/y + ; make sure we don't collide with wall + mov ex,ax + add ex,#$08 + lsr ex + lsr ex + lsr ex ; divide X by 8 + and ex,#31 + mov fx,ex + mov ex,ax + add ex,@$0800 + lsr ex + lsr ex + lsr ex + lsr ex + lsr ex + lsr ex ; divide Y by 64 + and ex,@$ffe0 + or ex,fx + add ex,@ScreenBuffer + mov fx,[ex] + and fx,@$ff00 + xor fx,@$0500 + bz DoNotUpdatePos + ; update x/y position + mov [dx],ax ; store x/y pos + inc dx + inc dx +NextSLoop: + dec cx + bnz MoveSLoop + rts +; Choose a new direction +DoNotUpdatePos: + mov bx,[dx+1] ; attributes/dir + inc bx + inc dx + mov [dx],bx + inc dx + jmp NextSLoop HelloWorld: .string HELLO WORLD .data 0 +SpriteInitData: +.data $8363 $3456 +.data $8373 $4567 +.data $8383 $5678 +.data $8373 $1234 + +DirectionXY: +.data $FFFF +.data $0100 +.data $0001 +.data $FF00 + MazeData: .data $3111 $1111 $1111 $1114 $3111 $1111 $1111 $1114 .data $2000 $0000 $0000 $0002 $2000 $0000 $0000 $0002 -.data $2031 $1114 $0311 $1402 $2031 $1140 $0311 $1402 -.data $2051 $1116 $0511 $1605 $6051 $1160 $0511 $1602 +.data $2031 $1114 $0311 $1402 $2031 $1140 $3111 $1402 +.data $2d51 $1116 $0511 $1605 $6051 $1160 $5111 $16d2 .data $2000 $0000 $0000 $0000 $0000 $0000 $0000 $0002 -.data $2031 $1114 $0340 $3111 $1114 $0340 $0311 $1402 -.data $2051 $1116 $0220 $5114 $3116 $0220 $0511 $1602 +.data $2031 $1114 $0340 $3111 $1114 $0340 $3111 $1402 +.data $2051 $1116 $0220 $5114 $3116 $0220 $5111 $1602 .data $2000 $0000 $0220 $0002 $2000 $0220 $0000 $0002 .data $5111 $1114 $0251 $1402 $2031 $1620 $3111 $1116 .data $3111 $1116 $0231 $1605 $6051 $1420 $5111 $1114 .data $2000 $0000 $0220 $0000 $0000 $0220 $0000 $0002 -.data $2031 $1114 $0220 $3111 $1114 $0220 $0311 $1402 -.data $2051 $1116 $0560 $2ccc $ccc2 $0560 $0511 $1602 +.data $2031 $1114 $0220 $3111 $1114 $0220 $3111 $1402 +.data $2051 $1116 $0560 $2ccc $ccc2 $0560 $5111 $1602 .data $2000 $0000 $0000 $2ccc $ccc2 $0000 $0000 $0002 -.data $5111 $1114 $0340 $2ccc $ccc2 $0340 $0311 $1116 -.data $3111 $1116 $0220 $5111 $1116 $0220 $0511 $1114 +.data $5111 $1114 $0340 $2ccc $ccc2 $0340 $3111 $1116 +.data $3111 $1116 $0220 $5111 $1116 $0220 $5111 $1114 .data $2000 $0000 $0220 $0000 $0000 $0220 $0000 $0002 -.data $2031 $1114 $0251 $1403 $4031 $1620 $0311 $1402 -.data $2051 $1116 $0511 $1605 $6051 $1160 $0511 $1602 -.data $2000 $0000 $0000 $0000 $0000 $0000 $0000 $0002 -.data $2031 $1114 $0311 $1403 $4031 $1140 $0311 $1402 -.data $2051 $1116 $0511 $1602 $2051 $1160 $0511 $1602 +.data $2031 $1114 $0251 $1403 $4031 $1620 $3111 $1402 +.data $2051 $1116 $0511 $1605 $6051 $1160 $5111 $1602 +.data $2d00 $0000 $0000 $0000 $0000 $0000 $0000 $00d2 +.data $2031 $1114 $0311 $1403 $4031 $1140 $3111 $1402 +.data $2051 $1116 $0511 $1602 $2051 $1160 $5111 $1602 .data $2000 $0000 $0000 $0002 $2000 $0000 $0000 $0002 .data $5111 $1111 $1111 $1116 $5111 $1111 $1111 $1116 MazeChars: -.data $f9 ; empty -.data $c4 $b3 ; horizvert -.data $da $bf $c0 $d9 ; corners -.data $c3 $c1 $c2 $b4 ; 3-way -.data $c5 ; 4-way -.data $20 ; empty (no dot) +.data $07f9 ; empty +.data $05c4 $05b3 ; horizvert +.data $05da $05bf $05c0 $05d9 ; corners +.data $05c3 $05c1 $05c2 $05b4 ; 3-way +.data $05c5 ; 4-way +.data $0720 ; empty (no dot) +.data $07fe ; power pill .data 123 $123 .align $10 diff --git a/src/worker/assembler.js b/src/worker/assembler.js index f841d838..db75dff6 100644 --- a/src/worker/assembler.js +++ b/src/worker/assembler.js @@ -48,10 +48,13 @@ var Assembler = function(spec) { var s = rule.fmt; var varlist = []; rule.prefix = s.split(/\s+/)[0]; + s = s.replace(/\+/g, '\\+'); + s = s.replace(/\*/g, '\\*'); s = s.replace(/\s+/g, '\\s+'); s = s.replace(/\[/g, '\\['); s = s.replace(/\]/g, '\\]'); s = s.replace(/\./g, '\\.'); + // TODO: more escapes? s = s.replace(/~\w+/g, function(varname) { varname = varname.substr(1); var v = vars[varname]; @@ -117,7 +120,7 @@ var Assembler = function(spec) { nbits:width*data.length }); for (var i=0; i