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[NES] Added UNROM-512 mapper and sample

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This commit is contained in:
g012 2024-04-11 14:37:13 +02:00
parent 5f71b92bcd
commit 31cccce3e1
8 changed files with 665 additions and 532 deletions

2
.gitignore vendored

@ -7,4 +7,4 @@
*.nes.deb
*.sym
*.mlb
*.nl
*.nl

5
README.md

@ -71,6 +71,7 @@ Table of Contents
* [Windows](#windows)
* [Linux](#linux)
* [Vim files installation](#vim-files-installation)
* [Visual Studio Code extension](#vscode-extension)
* [TODO List](#todo-list)
* [Credits](#credits)
* [License](#license)
@ -656,6 +657,10 @@ make
Note that the syntax file includes some highlighting for features only activated via pragmas: `dna`, `xsr`, `rtx` and `far`. If you do not want to use these keywords, remove them from the syntax file.
## Visual Studio Code extension
Install the "l65" extension from the marketplace or check [l65-vscode](https://github.com/g012/l65-vscode) repository.
## TODO List
* [k65](http://devkk.net/wiki/index.php?title=K65) style syntax

7
asm.lua

@ -101,7 +101,8 @@ M.link = function()
end
for _,constraint in ipairs(section.constraints) do
local cstart, cfinish = address+constraint.start, address+constraint.finish
if rorg(cstart) // 0x100 == rorg(cfinish) // 0x100 then
local s, f = rorg(cstart) // 0x100, rorg(cfinish) // 0x100
if s==f or math.ceil(s)==math.floor(s) and s+1==f and cfinish-cstart==0x100 then
if constraint.type == 'crosspage' then return end
else
if constraint.type == 'samepage' then return end
@ -259,7 +260,7 @@ M.link = function()
return waste, cross, lsb
end)
if not position then
error("unable to find space for section " .. section.label)
error("unable to find space for related section '" .. section.label .. "' of size " .. section.size)
end
for section,offset in pairs(related) do
section.org = position + (section.location.start - location_start) + offset
@ -273,7 +274,7 @@ M.link = function()
table.sort(position_independent_sections, function(a,b) if a.size==b.size then return a.label>b.label end return a.size>b.size end)
for _,section in ipairs(position_independent_sections) do
if not position_section(section) then
error("unable to find space for section " .. section.label)
error("unable to find space for section '" .. section.label .. "' of size " .. section.size)
end
end

54
nes.l65

@ -405,7 +405,7 @@ mappers.UxROM = function(t)
until off + sz >= t.chrsize
chrrom = chrrom0
function switchprgrom(bankix)
if bankix then assert(bankix < bc-1) lda #bankix end
if bankix then assert(bankix < bc, "mappers.switchprgrom: bank out of range: " .. bankix .. ", expected 0-" .. (bc-1)) lda #bankix end
-- lda to reverse map [n..0] to [0..n]
tax lda bankbytes,x sta bankbytes,x
end
@ -415,6 +415,58 @@ mappers.UxROM = function(t)
end
mappers[2] = mappers.UxROM
--[[
https://www.nesdev.org/wiki/UNROM_512
]]
mappers.UNROM512 = function(t)
if not t then t = {} end
t.mapperid = 30
if not t.prgsize then t.prgsize = 32 * 16384 end
assert(t.prgsize >= 0x8000 and t.prgsize <= 0x80000, "prgsize must be at least 32kB and at most 512kB")
assert(n0ne(t.chrsize), "chrsize must be 0")
if n0ne(t.chrramsize) and n0ne(t.chrbramsize) then t.chrramsize = 4 * 8192 end
local csize = val0(t.chrramsize) + val0(t.chrbramsize)
assert(csize == 0x2000 or csize == 0x4000 or csize == 0x8000, "combined chrram size must be 8, 16 or 32kB")
hdrrom = location{0x7ff0, 0x7fff, name='header'}
header(t)
local bc = t.prgsize//0x4000
for bi=0,bc-2 do
local o,ix = 0x8000 + bi*0x4000, bc-1-bi
_ENV['prgrom'..ix] = location{o, o+0x3fff, rorg=0x8000, name='prgrom'..ix}
end
local prglast = 0x8000 + (bc-1)*0x4000
prgrom0 = location{prglast, prglast+0x3fff, rorg=0xc000, name='prgrom0'}
prgrom = prgrom0
section{"vectors", org=prglast+0x3ffa} dc.w nmi, main, irq
section{ "bankbytes", align=256 } -- for handling bus conflicts
for m=0,1 do
for c=0,3 do
for p=0x1f,0,-1 do byte(m<<7 | c<<5 | p) end
end
end
function clearchrram(page_count, offset)
ppu_addr(CHAR0 + (offset or 0)) tay ldx#(page_count or 32) @_clear sta PPUDATA iny bne _clear dex bne _clear
end
function loadchrram(var, page_count, offset)
ppu_addr(CHAR0 + (offset or 0)) ldx#(page_count or 32) ldy#0 @_load lda (var),y sta PPUDATA iny bne _load inc var+1 dex bne _load
end
function switch(prgbankix, chrbankix, mirror)
if prgbankix then assert(prgbankix < bc, "mappers.switch: PRG bank out of range: " .. prgbankix .. ", expected 0-" .. (bc-1)) end
if chrbankix then assert(chrbankix < 4, "mappers.switch: CHR bank out of range: " .. chrbankix .. ", expected 0-3") end
if mirror then assert(mirror == 0 or mirror == 1, "mappers.switch: mirror out of range: " .. mirror .. ", expected 0-1") end
if prgbankix or chrbankix or mirror then
local r = (mirror or 0)<<7 | (chrbankix or 0)<<5 | (prgbankix or 1)
lda #r
end
-- lda to reverse prg map [n..0] to [0..n]
tax lda bankbytes,x sta bankbytes,x
end
mappers.init = function()
switch(1)
end
end
mappers[30] = mappers.UxROM
--[[
https://wiki.nesdev.com/w/index.php/CNROM
Has bus conflicts.

75
samples/nes_chrram.l65 Normal file

@ -0,0 +1,75 @@
require'nes'
mappers.UNROM512()
location(prgrom1)
local font_size = 27 * 16
@@font
dc.b 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 -- <SPC>
dc.b 0x38,0x38,0x2c,0x64,0x7e,0x46,0xce,0x00,0x38,0x38,0x2c,0x64,0x7e,0x46,0xce,0x00 -- A
dc.b 0xfc,0x62,0x66,0x7c,0x62,0x66,0xfc,0x00,0xfc,0x62,0x66,0x7c,0x62,0x66,0xfc,0x00 -- B
dc.b 0x7c,0xe6,0xc2,0xc0,0xc0,0xe6,0x7c,0x00,0x7c,0xe6,0xc2,0xc0,0xc0,0xe6,0x7c,0x00 -- C
dc.b 0xfc,0x4e,0x46,0x46,0x46,0xce,0xfc,0x00,0xfc,0x4e,0x46,0x46,0x46,0xce,0xfc,0x00 -- D
dc.b 0xfe,0x66,0x60,0x7c,0x60,0x66,0xfe,0x00,0xfe,0x66,0x60,0x7c,0x60,0x66,0xfe,0x00 -- E
dc.b 0xfe,0x66,0x60,0x7c,0x60,0x60,0xf0,0x00,0xfe,0x66,0x60,0x7c,0x60,0x60,0xf0,0x00 -- F
dc.b 0x7c,0xe6,0xc0,0xce,0xc6,0xe6,0x7c,0x00,0x7c,0xe6,0xc0,0xce,0xc6,0xe6,0x7c,0x00 -- G
dc.b 0xee,0x66,0x66,0x7e,0x66,0x66,0xee,0x00,0xee,0x66,0x66,0x7e,0x66,0x66,0xee,0x00 -- H
dc.b 0x3c,0x18,0x18,0x18,0x18,0x18,0x3c,0x00,0x3c,0x18,0x18,0x18,0x18,0x18,0x3c,0x00 -- I
dc.b 0x0e,0x06,0x06,0xc6,0xc6,0xce,0x7c,0x00,0x0e,0x06,0x06,0xc6,0xc6,0xce,0x7c,0x00 -- J
dc.b 0xce,0xdc,0xf8,0xf0,0xf8,0xdc,0xce,0x00,0xce,0xdc,0xf8,0xf0,0xf8,0xdc,0xce,0x00 -- K
dc.b 0xc0,0xc0,0xc0,0xc0,0xc6,0xc6,0xfe,0x00,0xc0,0xc0,0xc0,0xc0,0xc6,0xc6,0xfe,0x00 -- L
dc.b 0xc6,0xee,0xfe,0xd6,0xc6,0xc6,0xc6,0x00,0xc6,0xee,0xfe,0xd6,0xc6,0xc6,0xc6,0x00 -- M
dc.b 0xc6,0xe6,0xf6,0xde,0xce,0xc6,0xc6,0x00,0xc6,0xe6,0xf6,0xde,0xce,0xc6,0xc6,0x00 -- N
dc.b 0x7c,0xee,0xc6,0xc6,0xc6,0xee,0x7c,0x00,0x7c,0xee,0xc6,0xc6,0xc6,0xee,0x7c,0x00 -- O
dc.b 0xfc,0xc6,0xc6,0xc6,0xfc,0xc0,0xc0,0x00,0xfc,0xc6,0xc6,0xc6,0xfc,0xc0,0xc0,0x00 -- P
dc.b 0x7c,0xce,0xc6,0xc6,0xde,0xec,0x7e,0x00,0x7c,0xce,0xc6,0xc6,0xde,0xec,0x7e,0x00 -- Q
dc.b 0xfc,0x66,0x66,0x7c,0x58,0x6c,0xe6,0x00,0xfc,0x66,0x66,0x7c,0x58,0x6c,0xe6,0x00 -- R
dc.b 0x7c,0xc6,0xc0,0x7c,0x06,0xc6,0x7c,0x00,0x7c,0xc6,0xc0,0x7c,0x06,0xc6,0x7c,0x00 -- S
dc.b 0xfe,0x92,0x10,0x10,0x10,0x10,0x38,0x00,0xfe,0x92,0x10,0x10,0x10,0x10,0x38,0x00 -- T
dc.b 0xe6,0xe6,0xc2,0xc2,0xc2,0xe6,0x7c,0x00,0xe6,0xe6,0xc2,0xc2,0xc2,0xe6,0x7c,0x00 -- U
dc.b 0xc6,0xc6,0xc6,0x6c,0x6c,0x38,0x38,0x00,0xc6,0xc6,0xc6,0x6c,0x6c,0x38,0x38,0x00 -- V
dc.b 0xc6,0xc6,0xd6,0xfe,0xee,0xc6,0x82,0x00,0xc6,0xc6,0xd6,0xfe,0xee,0xc6,0x82,0x00 -- W
dc.b 0x86,0xcc,0x78,0x30,0x78,0xcc,0x86,0x00,0x86,0xcc,0x78,0x30,0x78,0xcc,0x86,0x00 -- X
dc.b 0xc6,0xc6,0x6c,0x38,0x18,0x18,0x38,0x00,0xc6,0xc6,0x6c,0x38,0x18,0x18,0x38,0x00 -- Y
dc.b 0x7e,0xce,0x98,0x30,0x62,0xe6,0xfc,0x00,0x7e,0xce,0x98,0x30,0x62,0xe6,0xfc,0x00 -- Z
-- RAM
chr = 0
location(prgrom)
@@nmi rti
@@irq rti
charset(" abcdefghijklmnopqrstuvwxyz")
local hello = "hello world"
@@text byte(hello)
@@main
init()
clearchrram()
-- load font in CHR RAM
ppu_addr(CHAR0)
lda #font&0xff sta chr lda #font>>8 sta chr+1
ldy #0 @_loadfnt1 lda (chr),y sta PPUDATA iny bne _loadfnt1
inc chr+1
@_loadfnt2 lda (chr),y sta PPUDATA iny cpy #font_size-256 bne _loadfnt2
-- load BG palette in PPU RAM
ppu_addr(BGPAL)
for _,v in ipairs{ 0x1f, 0x00, 0x10, 0x20 } do lda #v sta PPUDATA end
-- load screen text in PPU RAM 0x21CA
ppu_addr(0x21ca)
ldy #0 @_loadtxt lda text,y sta PPUDATA iny cpy ##hello bne _loadtxt
-- reset scroll position
ppu_addr(0) sta BGSCROL sta BGSCROL
-- show BG
vblank_waitbegin()
lda #0x0a sta PPUMASK
-- idle
@_loop jmp _loop
writebin(filename..'.nes')
writesym(filename..'.mlb', 'mesen')
writesym(filename..'.nes', 'fceux')
print(stats)

226
samples/vcs_flush.l65

@ -1,113 +1,113 @@
require'vcs'
mappers['4K']()
local HEADER_LEN = 92
local PICTURE_LEN = 64
local STEP_COUNT = 32
-- FLUSH text as playfield
local logo_img = assert(l65.image("flush.png")) -- analyse the image twice, so load it separately
@@logo_col samepage byte(0x00, 0xd4, 0x72, linecol(logo_img)) end
local pfs = playfield(logo_img)
for i=1,#pfs do
local pf = pfs[i]
section("logo_pf"..(i-1)) samepage byte(0, pf[1], pf[#pf], pf) end
end
local LOGO_HEIGHT = #pfs[1]
-- background
local bg = linecol("flushbg.png")
@@logo_bg_all
samepage
@logo_bg_pre for i=1,8 do dc.b bg[1] end
@logo_bg
for i=1,13 do dc.b bg[1] end
byte(bg)
for i=1,13 do dc.b bg[#bg] end
@logo_bg_post for i=1,8 do dc.b bg[#bg] end
end
-- generate offset tables into logo_pf*
do
local DISP_HEIGHT = PICTURE_LEN
local transfo,bgshift = {},{}
for x=0,STEP_COUNT-1 do
local theta = x/(STEP_COUNT-1) * math.pi/2 - math.pi/4
local s,c = math.sin(theta),math.cos(theta)
local ra,rb,rc,rd = -c, s-c, s+c, c
for y=0,DISP_HEIGHT-1 do
local r = DISP_HEIGHT / LOGO_HEIGHT
local yn = r * (2 * y/(DISP_HEIGHT-1) - 1)
local function f()
local y = (s-yn) / c
return math.min(math.floor((y+1)/2*LOGO_HEIGHT), LOGO_HEIGHT-1) + 3
end
local v
if rd < rc then v = yn>rc and 0 or yn>rb and f(yn) or yn>ra and 2 or 0
else v = yn>rd and 0 or yn>rc and 1 or yn>rb and f(yn) or 0 end
transfo[x*DISP_HEIGHT+DISP_HEIGHT-y] = v
end
bgshift[#bgshift+1] = math.floor(math.sin(math.pi+theta)*LOGO_HEIGHT/4)
end
@@logo_transfo byte(transfo)
@@logo_bgshift byte(bgshift)
end
-- rotation anim
do
local PERIOD = 128
local f = \x((math.sin(x*2*math.pi/PERIOD)+1)/2 * (STEP_COUNT-1))
local rotation = {}
for x=1,PERIOD do
rotation[#rotation+1] = math.floor(math.min(f(x-1), (STEP_COUNT-1)))
end
@@logo_rotation byte(rotation)
end
local bg_ptr = 0x80
local trans_ptr = 0x82
local time = 0x84
local tmp = 0x85
local on_vblank = function()
inc time asl time lsr time
ldy time lda logo_rotation,y sta tmp
ldy tmp lda logo_bgshift,y sta bg_ptr
lda#logo_bg&0xff clc adc bg_ptr sta bg_ptr lda#logo_bg>>8 sta bg_ptr+1
setptr(logo_transfo, trans_ptr)
lda tmp asl asl asl asl asl asl clc adc trans_ptr sta trans_ptr
lda trans_ptr+1 adc#0 sta trans_ptr+1
lda tmp lsr lsr clc adc trans_ptr+1 sta trans_ptr+1
ldy#PICTURE_LEN-1 lda (bg_ptr),y sta COLUBK
end
local kernel = function()
ldy#HEADER_LEN @_header sta WSYNC dey bne _header
samepage @_line
lda (trans_ptr),y tax
lda (bg_ptr),y
sta WSYNC sta COLUBK
lda logo_col,x sta COLUPF
lda logo_pf0,x sta PF0
lda logo_pf1,x sta PF1
lda logo_pf2,x sta PF2
lda logo_pf3,x sta PF0
lda logo_pf4,x sta PF1
lda logo_pf5,x sta PF2
iny cpy#PICTURE_LEN bne _line
end
lda#0 sta WSYNC sta PF0 sta PF1 sta PF2
end
@@main
init()
@_frame
overscan() vblank(on_vblank) screen(kernel) jmp _frame
;
writebin(filename..'.bin')
writesym(filename..'.sym')
print(stats)
require'vcs'
mappers['4K']()
local HEADER_LEN = 92
local PICTURE_LEN = 64
local STEP_COUNT = 32
-- FLUSH text as playfield
local logo_img = assert(l65.image("flush.png")) -- analyse the image twice, so load it separately
@@logo_col samepage byte(0x00, 0xd4, 0x72, linecol(logo_img)) end
local pfs = playfield(logo_img)
for i=1,#pfs do
local pf = pfs[i]
section("logo_pf"..(i-1)) samepage byte(0, pf[1], pf[#pf], pf) end
end
local LOGO_HEIGHT = #pfs[1]
-- background
local bg = linecol("flushbg.png")
@@logo_bg_all
samepage
@logo_bg_pre for i=1,8 do dc.b bg[1] end
@logo_bg
for i=1,13 do dc.b bg[1] end
byte(bg)
for i=1,13 do dc.b bg[#bg] end
@logo_bg_post for i=1,8 do dc.b bg[#bg] end
end
-- generate offset tables into logo_pf*
do
local DISP_HEIGHT = PICTURE_LEN
local transfo,bgshift = {},{}
for x=0,STEP_COUNT-1 do
local theta = x/(STEP_COUNT-1) * math.pi/2 - math.pi/4
local s,c = math.sin(theta),math.cos(theta)
local ra,rb,rc,rd = -c, s-c, s+c, c
for y=0,DISP_HEIGHT-1 do
local r = DISP_HEIGHT / LOGO_HEIGHT
local yn = r * (2 * y/(DISP_HEIGHT-1) - 1)
local function f()
local y = (s-yn) / c
return math.min(math.floor((y+1)/2*LOGO_HEIGHT), LOGO_HEIGHT-1) + 3
end
local v
if rd < rc then v = yn>rc and 0 or yn>rb and f(yn) or yn>ra and 2 or 0
else v = yn>rd and 0 or yn>rc and 1 or yn>rb and f(yn) or 0 end
transfo[x*DISP_HEIGHT+DISP_HEIGHT-y] = v
end
bgshift[#bgshift+1] = math.floor(math.sin(math.pi+theta)*LOGO_HEIGHT/4)
end
@@logo_transfo byte(transfo)
@@logo_bgshift byte(bgshift)
end
-- rotation anim
do
local PERIOD = 128
local f = \x((math.sin(x*2*math.pi/PERIOD)+1)/2 * (STEP_COUNT-1))
local rotation = {}
for x=1,PERIOD do
rotation[#rotation+1] = math.floor(math.min(f(x-1), (STEP_COUNT-1)))
end
@@logo_rotation byte(rotation)
end
local bg_ptr = 0x80
local trans_ptr = 0x82
local time = 0x84
local tmp = 0x85
local on_vblank = function()
inc time asl time lsr time
ldy time lda logo_rotation,y sta tmp
ldy tmp lda logo_bgshift,y sta bg_ptr
lda#logo_bg&0xff clc adc bg_ptr sta bg_ptr lda#logo_bg>>8 sta bg_ptr+1
setptr(logo_transfo, trans_ptr)
lda tmp asl asl asl asl asl asl clc adc trans_ptr sta trans_ptr
lda trans_ptr+1 adc#0 sta trans_ptr+1
lda tmp lsr lsr clc adc trans_ptr+1 sta trans_ptr+1
ldy#PICTURE_LEN-1 lda (bg_ptr),y sta COLUBK
end
local kernel = function()
ldy#HEADER_LEN @_header sta WSYNC dey bne _header
samepage @_line
lda (trans_ptr),y tax
lda (bg_ptr),y
sta WSYNC sta COLUBK
lda logo_col,x sta COLUPF
lda logo_pf0,x sta PF0
lda logo_pf1,x sta PF1
lda logo_pf2,x sta PF2
lda logo_pf3,x sta PF0
lda logo_pf4,x sta PF1
lda logo_pf5,x sta PF2
iny cpy#PICTURE_LEN bne _line
end
lda#0 sta WSYNC sta PF0 sta PF1 sta PF2
end
@@main
init()
@_frame
overscan() vblank(on_vblank) screen(kernel) jmp _frame
;
writebin(filename..'.bin')
writesym(filename..'.sym')
print(stats)

826
samples/vcs_music.l65

@ -1,413 +1,413 @@
require'vcs'
mappers['2K']()
local AUDC0s = 0x90
local AUDC1s, AUDF0s, AUDF1s, AUDV0s, AUDV1s = AUDC0s+1, AUDC0s+2, AUDC0s+3, AUDC0s+4, AUDC0s+5
local vubars = 0xA0
local tmp = 0xB0
local zic_filename = ... or 'Ishtar.ttt'
local zic = ttt(zic_filename)
print(string.format('Using file %s (ttt version %d)\n Name: %s\n Author: %s\n%s', zic_filename, zic.version, zic.name, zic.author, zic.comment))
-- debug printing of zic data
--[[
local printbytetable = function(v)
local s = ' '
for kk,vv in ipairs(v) do
s = s .. string.format('%02x, ', vv)
if #s >= 34 then print(s) s = ' ' end
end
if #s > 0 then print(s) end
end
for k,v in pairs(zic) do
if type(v) ~= 'table' then
print(k,v)
elseif type(v[1]) == 'number' then
print(k) printbytetable(v)
elseif type(v[1]) == 'table' then
for ek, e in ipairs(v) do
print(k, ek, e.name) printbytetable(e)
end
end
end
]]
@@tt_InsCtrlTable byte(zic.insctrltable)
@@tt_InsADIndexes byte(zic.insadindexes)
@@tt_InsSustainIndexes byte(zic.inssustainindexes)
@@tt_InsReleaseIndexes byte(zic.insreleaseindexes)
@@tt_InsFreqVolTable byte(zic.insfreqvoltable)
@@tt_PercIndexes byte(zic.percindexes)
@@tt_PercFreqTable byte(zic.percfreqtable)
@@tt_PercCtrlVolTable byte(zic.percctrlvoltable)
local patterns = {}
for i,pattern in ipairs(zic.patterns) do
table.insert(patterns, section("pattern"..i)) byte(pattern)
end
@@tt_PatternSpeeds byte(zic.patternspeeds)
@@tt_PatternPtrLo byte_lo(patterns)
@@tt_PatternPtrHi byte_hi(patterns)
@@tt_SequenceTable byte(zic.sequence[1]) byte(zic.sequence[2])
local tt = {
-- =====================================================================
-- Permanent variables. These are states needed by the player.
-- =====================================================================
'timer', -- current music timer value
'cur_pat_index_c0', -- current pattern index into tt_SequenceTable
'cur_pat_index_c1',
'cur_note_index_c0', -- note index into current pattern
'cur_note_index_c1',
'envelope_index_c0', -- index into ADSR envelope
'envelope_index_c1',
'cur_ins_c0', -- current instrument
'cur_ins_c1',
-- =====================================================================
-- Temporary variables. These will be overwritten during a call to the
-- player routine, but can be used between calls for other things.
-- =====================================================================
'ptr', -- 2 bytes
}
for k,v in ipairs(tt) do tt[v] = k + 0x7F end
tt.FREQ_MASK = 0b00011111
tt.INS_HOLD = 8
tt.INS_PAUSE = 16
tt.FIRST_PERC = 17
tt.fetchCurrentNoteImpl = function()
@_constructPatPtr
ldy tt.cur_pat_index_c0,x lda tt_SequenceTable,y
if zic.usegoto then
bpl _noPatternGoto
;and #0b01111111 sta tt.cur_pat_index_c0,x bpl _constructPatPtr
@_noPatternGoto
end
tay lda tt_PatternPtrLo,y sta tt.ptr lda tt_PatternPtrHi,y sta tt.ptr+1
if zic.overlay then
clv
lda tt.cur_note_index_c0,x bpl _notPrefetched
;and #0b01111111 sta tt.cur_note_index_c0,x
bit tt_Bit6Set
@_notPrefetched
tay
else
ldy tt.cur_note_index_c0,x
end
lda (tt.ptr),y bne _noEndOfPattern
sta tt.cur_note_index_c0,x
inc tt.cur_pat_index_c0,x
bne _constructPatPtr
@_noEndOfPattern
end
if zic.useoverlay then
@@tt_fetchCurrentNoteSection tt.fetchCurrentNoteImpl() rts
tt.fetchCurrentNote = function() jsr tt_fetchCurrentNoteSection end
else
tt.fetchCurrentNote = tt.fetchCurrentNoteImpl
end
@@tt_CalcInsIndex
lsr lsr lsr lsr lsr
tay
@tt_Bit6Set
rts
local function zic_tick()
dec tt.timer bpl _noNewNote
ldx #1
@_advanceLoop
tt.fetchCurrentNote()
cmp #tt.INS_PAUSE
if zic.useslide then
beq _pause
bcs _newNote
adc tt.cur_ins_c0,x sec sbc #8 sta tt.cur_ins_c0,x
bcs _finishedNewNote
else
bcc _finishedNewNote
bne _newNote
end
@_pause
lda tt.cur_ins_c0,x jsr tt_CalcInsIndex
lda tt_InsReleaseIndexes-1,y
clc adc #1 bcc _storeADIndex
@_newNote
sta tt.cur_ins_c0,x
cmp #tt.FREQ_MASK+1 bcs _startInstrument
tay
lda tt_PercIndexes-tt.FIRST_PERC,y
bne _storeADIndex
@_startInstrument
if zic.useoverlay then
bvs _finishedNewNote
end
jsr tt_CalcInsIndex
lda tt_InsADIndexes-1,y
@_storeADIndex
sta tt.envelope_index_c0,x
@_finishedNewNote
inc tt.cur_note_index_c0,x
@_sequencerNextChannel
dex
bpl _advanceLoop
if zic.globalspeed then
ldx #zic.speed-1
if zic.usefunktempo then
lda tt.cur_note_index_c0 lsr bcc _noOddFrame ldx #zic.oddspeed-1 @_noOddFrame
end
stx tt.timer
else
ldx tt.cur_pat_index_c0 ldy tt_SequenceTable,x
if zic.usefunktempo then
lda tt.cur_note_index_c0 lsr
lda tt_PatternSpeeds,y
bcc _evenFrame
;and #0x0f
bcs _storeFunkTempo
@_evenFrame
lsr lsr lsr lsr
@_storeFunkTempo
sta tt.timer
else
lda tt_PatternSpeeds,y sta tt.timer
end
end
@_noNewNote
ldx #1
@_updateLoop
lda tt.cur_ins_c0,x
if not zic.startswithnotes then
beq _afterAudioUpdate
end
cmp #tt.FREQ_MASK+1 bcs _instrument
ldy tt.envelope_index_c0,x
lda tt_PercCtrlVolTable-1,y beq _endOfPercussion inc tt.envelope_index_c0,x @_endOfPercussion
sta AUDV0,x sta AUDV0s,x lsr lsr lsr lsr sta AUDC0,x sta AUDC0s,x
lda tt_PercFreqTable-1,y
sta AUDF0,x
sta AUDF0s,x -- EXTRA for vumeter rendering
if zic.useoverlay then
bpl _afterAudioUpdate
tt.fetchCurrentNote()
cmp #tt.FREQ_MASK+1
bcc _afterAudioUpdate
sta tt.cur_ins_c0,x
jsr tt_CalcInsIndex
lda tt_InsSustainIndexes-1,y sta tt.envelope_index_c0,x
asl tt.cur_note_index_c0,x sec ror tt.cur_note_index_c0,x
bmi _afterAudioUpdate
else
jmp _afterAudioUpdate
end
@_instrument
jsr tt_CalcInsIndex
lda tt_InsCtrlTable-1,y sta AUDC0,x
sta AUDC0s,x -- EXTRA for vumeter rendering
lda tt.envelope_index_c0,x cmp tt_InsReleaseIndexes-1,y bne _noEndOfSustain lda tt_InsSustainIndexes-1,y @_noEndOfSustain
tay
lda tt_InsFreqVolTable,y beq _endOfEnvelope iny @_endOfEnvelope
sty tt.envelope_index_c0,x
sta AUDV0,x
sta AUDV0s,x -- EXTRA for vumeter rendering
lsr lsr lsr lsr clc adc tt.cur_ins_c0,x sec sbc #8
sta AUDF0,x
sta AUDF0s,x -- EXTRA for vumeter rendering
@_afterAudioUpdate
dex
bpl _updateLoop
end
local function zic_init()
if zic.c0init ~= 0 then lda#zic.c0init sta tt.cur_pat_index_c0 end
if zic.c1init ~= 0 then lda#zic.c1init sta tt.cur_pat_index_c1 end
end
----------------------------------------------------------------------
-- display song name and author
----------------------------------------------------------------------
section{ "font", align=256 } dc.b
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,-- <SPC>
0x18,0x3c,0x66,0x7e,0x66,0x66,0x66,0x00,-- A
0x7c,0x66,0x66,0x7c,0x66,0x66,0x7c,0x00,-- B
0x3c,0x66,0x60,0x60,0x60,0x66,0x3c,0x00,-- C
0x78,0x6c,0x66,0x66,0x66,0x6c,0x78,0x00,-- D
0x7e,0x60,0x60,0x78,0x60,0x60,0x7e,0x00,-- E
0x7e,0x60,0x60,0x78,0x60,0x60,0x60,0x00,-- F
0x3c,0x66,0x60,0x6e,0x66,0x66,0x3c,0x00,-- G
0x66,0x66,0x66,0x7e,0x66,0x66,0x66,0x00,-- H
0x3c,0x18,0x18,0x18,0x18,0x18,0x3c,0x00,-- I
0x1e,0x0c,0x0c,0x0c,0x0c,0x6c,0x38,0x00,-- J
0x66,0x6c,0x78,0x70,0x78,0x6c,0x66,0x00,-- K
0x60,0x60,0x60,0x60,0x60,0x60,0x7e,0x00,-- L
0x63,0x77,0x7f,0x6b,0x63,0x63,0x63,0x00,-- M
0x66,0x76,0x7e,0x7e,0x6e,0x66,0x66,0x00,-- N
0x3c,0x66,0x66,0x66,0x66,0x66,0x3c,0x00,-- O
0x7c,0x66,0x66,0x7c,0x60,0x60,0x60,0x00,-- P
0x3c,0x66,0x66,0x66,0x66,0x3c,0x0e,0x00,-- Q
0x7c,0x66,0x66,0x7c,0x78,0x6c,0x66,0x00,-- R
0x3c,0x66,0x60,0x3c,0x06,0x66,0x3c,0x00,-- S
0x7e,0x18,0x18,0x18,0x18,0x18,0x18,0x00,-- T
0x66,0x66,0x66,0x66,0x66,0x66,0x3c,0x00,-- U
0x66,0x66,0x66,0x66,0x66,0x3c,0x18,0x00,-- V
0x63,0x63,0x63,0x6b,0x7f,0x77,0x63,0x00,-- W
0x66,0x66,0x3c,0x18,0x3c,0x66,0x66,0x00,-- X
0x66,0x66,0x66,0x3c,0x18,0x18,0x18,0x00,-- Y
0x7e,0x06,0x0c,0x18,0x30,0x60,0x7e,0x00 -- Z
charset(" abcdefghijklmnopqrstuvwxyz", \x(x*8))
local normtxt = function(txt)
txt = txt:lower()
local out = {}
for i=1,#txt do
local c = string.byte(txt:sub(i,i))
if c < string.byte('a') or c > string.byte('z') then c = string.byte(' ') end
table.insert(out, string.char(c))
end
local ex = 12 - #out
for i=1,ex do
if i&1 ~= 0 then table.insert(out, 1, ' ')
else table.insert(out, ' ')
end
end
return table.concat(out)
end
@@song_name byte(normtxt(zic.name))
@@song_author byte(normtxt(zic.author))
local print_txt = tmp+1 -- text pointer, can cross
local print_line_count=tmp -- number of lines to print
local print_ptr = tmp+3 -- array of pointers to the characters
-- a = line count
@@print12
sta print_line_count
lda#6 sta NUSIZ0 sta NUSIZ1
-- set MSB of font character addresses
lda#font>>8 ldx#23 @_loadfont sta print_ptr,x dex dex bpl _loadfont
-- position sprites
samepage
sta WSYNC
ldx#6 @_delay dex bne _delay
sta RESP0 nop sta RESP1 lda#0x70 sta HMP0 lda#0x60 sta HMP1 sta WSYNC sta HMOVE
end
@_loop
-- load text line
ldx#0 ldy#0 @_loadline lda (print_txt),y sta print_ptr,x inx inx iny cpy#12 bne _loadline
lda#0x80 sta HMP0 sta HMP1
ldy#0 samepage @_printline
sta WSYNC sta HMOVE
-- first scanline
lda (print_ptr+2),y sta GRP0 lda (print_ptr+6),y sta GRP1
lda (print_ptr+22),y tax sleep(6)
lda (print_ptr+10),y sta GRP0 lda (print_ptr+14),y sta GRP1 lda (print_ptr+18),y sta GRP0 stx GRP1
sta HMCLR sleep(8) sta HMOVE
-- second scanline
lda (print_ptr),y sta GRP0 lda (print_ptr+4),y sta GRP1
lda (print_ptr+20),y tax lda#0x80 sta HMP0 sta HMP1 nop
lda (print_ptr+8),y sta GRP0 lda (print_ptr+12),y sta GRP1 lda (print_ptr+16),y sta GRP0 stx GRP1
iny cpy#8 bne _printline
end
dec print_line_count beq _end
lda print_txt clc adc#12 sta print_txt lda print_txt+1 adc#0 sta print_txt+1
jmp _loop
@_end
lda#0 sta GRP0 sta GRP1
rts
----------------------------------------------------------------------
-- equalizer anim
----------------------------------------------------------------------
-- convert to freq: http://atariage.com/forums/topic/257526-musicsound-programming-question-atari-2600/
-- maps AUDCi to 0-7 3 bits (<<5) value for wave length of: 1, 2, 6, 15, 31, 93, 465, 511
@@wavlen samepage
dc.b 0x00,0x60,0xC0,0xC0,0x20,0x20,0x80,0x80,
0xF0,0x80,0x80,0x00,0x40,0x40,0xA0,0xA0
end
local wavelen_map = { 1, 2, 6, 15, 31, 93, 465, 511 }
local freq_ranges = { 30, 60, 120, 240, 480, 960, 1920, 9999999 }
local t = {}
for i=0,255 do
local wavelen = wavelen_map[(i>>5)+1]
local note = (i&31)+1
local freq = 3546894 / 114 / wavelen / note
for x=1,9 do
if freq <= freq_ranges[x] then
t[#t+1] = x-1
break
end
end
end
section{'regfreq', align=256} byte(t)
@@vm_pf2 samepage
dc.b 0x00,0x80,0xC0,0xE0,0xF0,0xF8,0xFC,0xFE,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
end
@@vm_pf1 samepage
dc.b 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x01,0x03,0x07,0x0F,0x1F,0x3F,0x7F
end
@@vm_col samepage
dc.b 0x3C,0x7C,0x9C,0xDC,0x2C,0x4C,0x6C,0xAC
end
local vumeter_tick = function()
lda #0 ldy #15 @_vudec ldx vubars,y dex bmi _vudecskip stx vubars,y @_vudecskip dey bpl _vudec
lda AUDF0s ldy AUDC0s ora wavlen,y tax ldy regfreq,x
lda AUDV0s cmp vubars,y bcc _vuless0 sta vubars,y @_vuless0
lda AUDF1s ldy AUDC1s ora wavlen,y tax ldy regfreq,x
lda AUDV1s cmp vubars+8,y bcc _vuless1 sta vubars+8,y @_vuless1
end
local vumeter_draw = function()
lda #ctrlpf.PF_MIRRORED sta CTRLPF
ldy #7
@_vudraw
samepage
lda #16 sta tmp
@_vudraw1
sta WSYNC
lda vm_col,y sta COLUPF sleep(4)
ldx vubars,y
lda vm_pf1,x sta PF1
lda vm_pf2,x sta PF2
sleep(8)
ldx vubars+8,y
lda vm_pf2,x sta PF2
lda vm_pf1,x sta PF1
dec tmp bpl _vudraw1
sta WSYNC lda #0 sta PF2 sta PF1
sta WSYNC
dey bpl _vudraw
end
lda #0 sta CTRLPF
sta WSYNC sta WSYNC
end
local tick = function()
zic_tick()
-- clamp to valid TIA range
lda AUDC0s ;and #0x0f sta AUDC0s lda AUDC1s ;and #0x0f sta AUDC1s
lda AUDF0s ;and #0x1f sta AUDF0s lda AUDF1s ;and #0x1f sta AUDF1s
lda AUDV0s ;and #0x0f sta AUDV0s lda AUDV1s ;and #0x0f sta AUDV1s
vumeter_tick()
end
local kernel = function()
lda#0x8a sta COLUP0 sta COLUP1
setptr(song_author,print_txt) lda#1 jsr print12
vumeter_draw()
lda#0xaa sta COLUP0 sta COLUP1
setptr(song_name,print_txt) lda#1 jsr print12
end
@@main
init()
zic_init()
@_frame
overscan() vblank(tick) screen(kernel) jmp _frame
; -- needed if last instruction is implied
writebin(filename..'.bin')
writesym(filename..'.sym')
print(stats)
require'vcs'
mappers['2K']()
local AUDC0s = 0x90
local AUDC1s, AUDF0s, AUDF1s, AUDV0s, AUDV1s = AUDC0s+1, AUDC0s+2, AUDC0s+3, AUDC0s+4, AUDC0s+5
local vubars = 0xA0
local tmp = 0xB0
local zic_filename = ... or 'Ishtar.ttt'
local zic = ttt(zic_filename)
print(string.format('Using file %s (ttt version %d)\n Name: %s\n Author: %s\n%s', zic_filename, zic.version, zic.name, zic.author, zic.comment))
-- debug printing of zic data
--[[
local printbytetable = function(v)
local s = ' '
for kk,vv in ipairs(v) do
s = s .. string.format('%02x, ', vv)
if #s >= 34 then print(s) s = ' ' end
end
if #s > 0 then print(s) end
end
for k,v in pairs(zic) do
if type(v) ~= 'table' then
print(k,v)
elseif type(v[1]) == 'number' then
print(k) printbytetable(v)
elseif type(v[1]) == 'table' then
for ek, e in ipairs(v) do
print(k, ek, e.name) printbytetable(e)
end
end
end
]]
@@tt_InsCtrlTable byte(zic.insctrltable)
@@tt_InsADIndexes byte(zic.insadindexes)
@@tt_InsSustainIndexes byte(zic.inssustainindexes)
@@tt_InsReleaseIndexes byte(zic.insreleaseindexes)
@@tt_InsFreqVolTable byte(zic.insfreqvoltable)
@@tt_PercIndexes byte(zic.percindexes)
@@tt_PercFreqTable byte(zic.percfreqtable)
@@tt_PercCtrlVolTable byte(zic.percctrlvoltable)
local patterns = {}
for i,pattern in ipairs(zic.patterns) do
table.insert(patterns, section("pattern"..i)) byte(pattern)
end
@@tt_PatternSpeeds byte(zic.patternspeeds)
@@tt_PatternPtrLo byte_lo(patterns)
@@tt_PatternPtrHi byte_hi(patterns)
@@tt_SequenceTable byte(zic.sequence[1]) byte(zic.sequence[2])
local tt = {
-- =====================================================================
-- Permanent variables. These are states needed by the player.
-- =====================================================================
'timer', -- current music timer value
'cur_pat_index_c0', -- current pattern index into tt_SequenceTable
'cur_pat_index_c1',
'cur_note_index_c0', -- note index into current pattern
'cur_note_index_c1',
'envelope_index_c0', -- index into ADSR envelope
'envelope_index_c1',
'cur_ins_c0', -- current instrument
'cur_ins_c1',
-- =====================================================================
-- Temporary variables. These will be overwritten during a call to the
-- player routine, but can be used between calls for other things.
-- =====================================================================
'ptr', -- 2 bytes
}
for k,v in ipairs(tt) do tt[v] = k + 0x7F end
tt.FREQ_MASK = 0b00011111
tt.INS_HOLD = 8
tt.INS_PAUSE = 16
tt.FIRST_PERC = 17
tt.fetchCurrentNoteImpl = function()
@_constructPatPtr
ldy tt.cur_pat_index_c0,x lda tt_SequenceTable,y
if zic.usegoto then
bpl _noPatternGoto
;and #0b01111111 sta tt.cur_pat_index_c0,x bpl _constructPatPtr
@_noPatternGoto
end
tay lda tt_PatternPtrLo,y sta tt.ptr lda tt_PatternPtrHi,y sta tt.ptr+1
if zic.overlay then
clv
lda tt.cur_note_index_c0,x bpl _notPrefetched
;and #0b01111111 sta tt.cur_note_index_c0,x
bit tt_Bit6Set
@_notPrefetched
tay
else
ldy tt.cur_note_index_c0,x
end
lda (tt.ptr),y bne _noEndOfPattern
sta tt.cur_note_index_c0,x
inc tt.cur_pat_index_c0,x
bne _constructPatPtr
@_noEndOfPattern
end
if zic.useoverlay then
@@tt_fetchCurrentNoteSection tt.fetchCurrentNoteImpl() rts
tt.fetchCurrentNote = function() jsr tt_fetchCurrentNoteSection end
else
tt.fetchCurrentNote = tt.fetchCurrentNoteImpl
end
@@tt_CalcInsIndex
lsr lsr lsr lsr lsr
tay
@tt_Bit6Set
rts
local function zic_tick()
dec tt.timer bpl _noNewNote
ldx #1
@_advanceLoop
tt.fetchCurrentNote()
cmp #tt.INS_PAUSE
if zic.useslide then
beq _pause
bcs _newNote
adc tt.cur_ins_c0,x sec sbc #8 sta tt.cur_ins_c0,x
bcs _finishedNewNote
else
bcc _finishedNewNote
bne _newNote
end
@_pause
lda tt.cur_ins_c0,x jsr tt_CalcInsIndex
lda tt_InsReleaseIndexes-1,y
clc adc #1 bcc _storeADIndex
@_newNote
sta tt.cur_ins_c0,x
cmp #tt.FREQ_MASK+1 bcs _startInstrument
tay
lda tt_PercIndexes-tt.FIRST_PERC,y
bne _storeADIndex
@_startInstrument
if zic.useoverlay then
bvs _finishedNewNote
end
jsr tt_CalcInsIndex
lda tt_InsADIndexes-1,y
@_storeADIndex
sta tt.envelope_index_c0,x
@_finishedNewNote
inc tt.cur_note_index_c0,x
@_sequencerNextChannel
dex
bpl _advanceLoop
if zic.globalspeed then
ldx #zic.speed-1
if zic.usefunktempo then
lda tt.cur_note_index_c0 lsr bcc _noOddFrame ldx #zic.oddspeed-1 @_noOddFrame
end
stx tt.timer
else
ldx tt.cur_pat_index_c0 ldy tt_SequenceTable,x
if zic.usefunktempo then
lda tt.cur_note_index_c0 lsr
lda tt_PatternSpeeds,y
bcc _evenFrame
;and #0x0f
bcs _storeFunkTempo
@_evenFrame
lsr lsr lsr lsr
@_storeFunkTempo
sta tt.timer
else
lda tt_PatternSpeeds,y sta tt.timer
end
end
@_noNewNote
ldx #1
@_updateLoop
lda tt.cur_ins_c0,x
if not zic.startswithnotes then
beq _afterAudioUpdate
end
cmp #tt.FREQ_MASK+1 bcs _instrument
ldy tt.envelope_index_c0,x
lda tt_PercCtrlVolTable-1,y beq _endOfPercussion inc tt.envelope_index_c0,x @_endOfPercussion
sta AUDV0,x sta AUDV0s,x lsr lsr lsr lsr sta AUDC0,x sta AUDC0s,x
lda tt_PercFreqTable-1,y
sta AUDF0,x
sta AUDF0s,x -- EXTRA for vumeter rendering
if zic.useoverlay then
bpl _afterAudioUpdate
tt.fetchCurrentNote()
cmp #tt.FREQ_MASK+1
bcc _afterAudioUpdate
sta tt.cur_ins_c0,x
jsr tt_CalcInsIndex
lda tt_InsSustainIndexes-1,y sta tt.envelope_index_c0,x
asl tt.cur_note_index_c0,x sec ror tt.cur_note_index_c0,x
bmi _afterAudioUpdate
else
jmp _afterAudioUpdate
end
@_instrument
jsr tt_CalcInsIndex
lda tt_InsCtrlTable-1,y sta AUDC0,x
sta AUDC0s,x -- EXTRA for vumeter rendering
lda tt.envelope_index_c0,x cmp tt_InsReleaseIndexes-1,y bne _noEndOfSustain lda tt_InsSustainIndexes-1,y @_noEndOfSustain
tay
lda tt_InsFreqVolTable,y beq _endOfEnvelope iny @_endOfEnvelope
sty tt.envelope_index_c0,x
sta AUDV0,x
sta AUDV0s,x -- EXTRA for vumeter rendering
lsr lsr lsr lsr clc adc tt.cur_ins_c0,x sec sbc #8
sta AUDF0,x
sta AUDF0s,x -- EXTRA for vumeter rendering
@_afterAudioUpdate
dex
bpl _updateLoop
end
local function zic_init()
if zic.c0init ~= 0 then lda#zic.c0init sta tt.cur_pat_index_c0 end
if zic.c1init ~= 0 then lda#zic.c1init sta tt.cur_pat_index_c1 end
end
----------------------------------------------------------------------
-- display song name and author
----------------------------------------------------------------------
section{ "font", align=256 } dc.b
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,-- <SPC>
0x18,0x3c,0x66,0x7e,0x66,0x66,0x66,0x00,-- A
0x7c,0x66,0x66,0x7c,0x66,0x66,0x7c,0x00,-- B
0x3c,0x66,0x60,0x60,0x60,0x66,0x3c,0x00,-- C
0x78,0x6c,0x66,0x66,0x66,0x6c,0x78,0x00,-- D
0x7e,0x60,0x60,0x78,0x60,0x60,0x7e,0x00,-- E
0x7e,0x60,0x60,0x78,0x60,0x60,0x60,0x00,-- F
0x3c,0x66,0x60,0x6e,0x66,0x66,0x3c,0x00,-- G
0x66,0x66,0x66,0x7e,0x66,0x66,0x66,0x00,-- H
0x3c,0x18,0x18,0x18,0x18,0x18,0x3c,0x00,-- I
0x1e,0x0c,0x0c,0x0c,0x0c,0x6c,0x38,0x00,-- J
0x66,0x6c,0x78,0x70,0x78,0x6c,0x66,0x00,-- K
0x60,0x60,0x60,0x60,0x60,0x60,0x7e,0x00,-- L
0x63,0x77,0x7f,0x6b,0x63,0x63,0x63,0x00,-- M
0x66,0x76,0x7e,0x7e,0x6e,0x66,0x66,0x00,-- N
0x3c,0x66,0x66,0x66,0x66,0x66,0x3c,0x00,-- O
0x7c,0x66,0x66,0x7c,0x60,0x60,0x60,0x00,-- P
0x3c,0x66,0x66,0x66,0x66,0x3c,0x0e,0x00,-- Q
0x7c,0x66,0x66,0x7c,0x78,0x6c,0x66,0x00,-- R
0x3c,0x66,0x60,0x3c,0x06,0x66,0x3c,0x00,-- S
0x7e,0x18,0x18,0x18,0x18,0x18,0x18,0x00,-- T
0x66,0x66,0x66,0x66,0x66,0x66,0x3c,0x00,-- U
0x66,0x66,0x66,0x66,0x66,0x3c,0x18,0x00,-- V
0x63,0x63,0x63,0x6b,0x7f,0x77,0x63,0x00,-- W
0x66,0x66,0x3c,0x18,0x3c,0x66,0x66,0x00,-- X
0x66,0x66,0x66,0x3c,0x18,0x18,0x18,0x00,-- Y
0x7e,0x06,0x0c,0x18,0x30,0x60,0x7e,0x00 -- Z
charset(" abcdefghijklmnopqrstuvwxyz", \x(x*8))
local normtxt = function(txt)
txt = txt:lower()
local out = {}
for i=1,#txt do
local c = string.byte(txt:sub(i,i))
if c < string.byte('a') or c > string.byte('z') then c = string.byte(' ') end
table.insert(out, string.char(c))
end
local ex = 12 - #out
for i=1,ex do
if i&1 ~= 0 then table.insert(out, 1, ' ')
else table.insert(out, ' ')
end
end
return table.concat(out)
end
@@song_name byte(normtxt(zic.name))
@@song_author byte(normtxt(zic.author))
local print_txt = tmp+1 -- text pointer, can cross
local print_line_count=tmp -- number of lines to print
local print_ptr = tmp+3 -- array of pointers to the characters
-- a = line count
@@print12
sta print_line_count
lda#6 sta NUSIZ0 sta NUSIZ1
-- set MSB of font character addresses
lda#font>>8 ldx#23 @_loadfont sta print_ptr,x dex dex bpl _loadfont
-- position sprites
samepage
sta WSYNC
ldx#6 @_delay dex bne _delay
sta RESP0 nop sta RESP1 lda#0x70 sta HMP0 lda#0x60 sta HMP1 sta WSYNC sta HMOVE
end
@_loop
-- load text line
ldx#0 ldy#0 @_loadline lda (print_txt),y sta print_ptr,x inx inx iny cpy#12 bne _loadline
lda#0x80 sta HMP0 sta HMP1
ldy#0 samepage @_printline
sta WSYNC sta HMOVE
-- first scanline
lda (print_ptr+2),y sta GRP0 lda (print_ptr+6),y sta GRP1
lda (print_ptr+22),y tax sleep(6)
lda (print_ptr+10),y sta GRP0 lda (print_ptr+14),y sta GRP1 lda (print_ptr+18),y sta GRP0 stx GRP1
sta HMCLR sleep(8) sta HMOVE
-- second scanline
lda (print_ptr),y sta GRP0 lda (print_ptr+4),y sta GRP1
lda (print_ptr+20),y tax lda#0x80 sta HMP0 sta HMP1 nop
lda (print_ptr+8),y sta GRP0 lda (print_ptr+12),y sta GRP1 lda (print_ptr+16),y sta GRP0 stx GRP1
iny cpy#8 bne _printline
end
dec print_line_count beq _end
lda print_txt clc adc#12 sta print_txt lda print_txt+1 adc#0 sta print_txt+1
jmp _loop
@_end
lda#0 sta GRP0 sta GRP1
rts
----------------------------------------------------------------------
-- equalizer anim
----------------------------------------------------------------------
-- convert to freq: http://atariage.com/forums/topic/257526-musicsound-programming-question-atari-2600/
-- maps AUDCi to 0-7 3 bits (<<5) value for wave length of: 1, 2, 6, 15, 31, 93, 465, 511
@@wavlen samepage
dc.b 0x00,0x60,0xC0,0xC0,0x20,0x20,0x80,0x80,
0xF0,0x80,0x80,0x00,0x40,0x40,0xA0,0xA0
end
local wavelen_map = { 1, 2, 6, 15, 31, 93, 465, 511 }
local freq_ranges = { 30, 60, 120, 240, 480, 960, 1920, 9999999 }
local t = {}
for i=0,255 do
local wavelen = wavelen_map[(i>>5)+1]
local note = (i&31)+1
local freq = 3546894 / 114 / wavelen / note
for x=1,9 do
if freq <= freq_ranges[x] then
t[#t+1] = x-1
break
end
end
end
section{'regfreq', align=256} byte(t)
@@vm_pf2 samepage
dc.b 0x00,0x80,0xC0,0xE0,0xF0,0xF8,0xFC,0xFE,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
end
@@vm_pf1 samepage
dc.b 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x01,0x03,0x07,0x0F,0x1F,0x3F,0x7F
end
@@vm_col samepage
dc.b 0x3C,0x7C,0x9C,0xDC,0x2C,0x4C,0x6C,0xAC
end
local vumeter_tick = function()
lda #0 ldy #15 @_vudec ldx vubars,y dex bmi _vudecskip stx vubars,y @_vudecskip dey bpl _vudec
lda AUDF0s ldy AUDC0s ora wavlen,y tax ldy regfreq,x
lda AUDV0s cmp vubars,y bcc _vuless0 sta vubars,y @_vuless0
lda AUDF1s ldy AUDC1s ora wavlen,y tax ldy regfreq,x
lda AUDV1s cmp vubars+8,y bcc _vuless1 sta vubars+8,y @_vuless1
end
local vumeter_draw = function()
lda #ctrlpf.PF_MIRRORED sta CTRLPF
ldy #7
@_vudraw
samepage
lda #16 sta tmp
@_vudraw1
sta WSYNC
lda vm_col,y sta COLUPF sleep(4)
ldx vubars,y
lda vm_pf1,x sta PF1
lda vm_pf2,x sta PF2
sleep(8)
ldx vubars+8,y
lda vm_pf2,x sta PF2
lda vm_pf1,x sta PF1
dec tmp bpl _vudraw1
sta WSYNC lda #0 sta PF2 sta PF1
sta WSYNC
dey bpl _vudraw
end
lda #0 sta CTRLPF
sta WSYNC sta WSYNC
end
local tick = function()
zic_tick()
-- clamp to valid TIA range
lda AUDC0s ;and #0x0f sta AUDC0s lda AUDC1s ;and #0x0f sta AUDC1s
lda AUDF0s ;and #0x1f sta AUDF0s lda AUDF1s ;and #0x1f sta AUDF1s
lda AUDV0s ;and #0x0f sta AUDV0s lda AUDV1s ;and #0x0f sta AUDV1s
vumeter_tick()
end
local kernel = function()
lda#0x8a sta COLUP0 sta COLUP1
setptr(song_author,print_txt) lda#1 jsr print12
vumeter_draw()
lda#0xaa sta COLUP0 sta COLUP1
setptr(song_name,print_txt) lda#1 jsr print12
end
@@main
init()
zic_init()
@_frame
overscan() vblank(tick) screen(kernel) jmp _frame
; -- needed if last instruction is implied
writebin(filename..'.bin')
writesym(filename..'.sym')
print(stats)

2
vim/syntax/l65.vim

@ -577,7 +577,7 @@ syn match l65Opcode /\<sre\%(.[bw]\)\=\>/
syn match l65Opcode /\<far\>/
syn match l65Opcode /\<rtx\>/
syn match l65Opcode /\<xsr\>/
" Common alias, reomve if desired.
" Common alias, remove if desired.
syn match l65Opcode /\<dna\%(.[bw]\)\=\>/
syn match l65Keyword /\<dnaimm\>/
syn match l65Keyword /\<dnazpg\>/