mirror of
https://github.com/g012/l65.git
synced 2024-06-02 12:41:28 +00:00
156 lines
3.0 KiB
Plaintext
156 lines
3.0 KiB
Plaintext
dofile "vcs.lua"
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TIM_OVERSCAN = 50 -- TIM64T, 3200 cycles = ~ 42 scanlines
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TIM_VBLANK = 61 -- TIM64T, 3904 cycles = ~ 51 scanlines
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TIM_KERNEL = 17 -- T1024T, 17408 cycles = ~229 scanlines
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location(0xf000, 0xffff)
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if toto ~= 15 then end
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abc = 13 ~ 0x7
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xyz = 1 << 2
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x:f()
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::lualabel::
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#pragma syntax6502 off
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lda = 5 if lda < 6 then print('yep') end
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#pragma syntax6502 on
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--[[
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local function ptr_table(label, ...)
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local vals = {...}
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section(label .. "_lo")
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for _,v in ipairs(vals) do byte_lo(v) end
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section(label .. "_hi")
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for _,v in ipairs(vals) do byte_hi(v) end
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end
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]]
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--@@message byte(4) "test" byte(0)
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@@data
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crosspage
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byte(1, 2) byte(3, 4)
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end
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word(0xf080) byte(16, 3, 4, 5, 6,
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24, 32)
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--[[
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word(message)
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byte_lo(message) byte_hi(message)
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--]]
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byte(\(message&0xff), \(message>>8))
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--[[
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ptr_table("ptrs", message, data, 0)
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--]]
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--section{ "toto", align = 256, offset = 16 }
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--section{ "toto", org = 0xf100 }
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--section "waitForIntim"
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@@waitForIntim --alt short syntax when no other option
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-- n_{ a=INTIM } ?
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--lda(INTIM) -- or a=INTIM
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--bne "waitForIntim"
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ldx #0xf0
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ldx #0b1101
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ldy #0xAB - 16 + 0b11011 & 3 | 6 ~ 0xf >> ~3 << 1 // 5
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lda data
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lda data,5
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lda data,5,x
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lda data,5,y
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lda data+3,12
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lda data+3,12,x
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lda data+3,12,y
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lda (INTIM,5,x)
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lda (INTIM,\a(a+2),x)
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lda (INTIM,5),y
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lda (INTIM,\a(a+2)),y
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jmp (INTIM)
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jmp (INTIM,12)
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jmp (INTIM,\a(a-4))
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lda function(c) return data * c end, v
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lda \c(data*c), v
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local f = \c(data*c) v=5 lda !f,v v=12 lda !f,v
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local g = function() return function(c) return data * c end end
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lda !g(),v
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#pragma encapsulate off
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lda f,v
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lda !_toto+15,16,x
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lda #15
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#pragma encapsulate on
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samepage
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lda #0xac
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lda #INTIM
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lda 0xbeef
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lda INTIM
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lda.w INTIM
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lda INTIM,x
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lda INTIM,y
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lda (INTIM,x)
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lda (INTIM),y
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end
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asl
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asl INTIM
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asl
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@_toto
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bne "test"
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bne waitForIntim
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bne f()
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bne _toto
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jam asl lsr ldx #16 ldy 0xf0f0
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rts
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--[[
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section "doOverscan"
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sta{WSYNC} -- WSYNC=a
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lda(2) sta{VBLANK} -- a=2 VBLANK=a
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lda(TIM_OVERSCAN) sta{TIM64T} -- a=TIM_OVERSCAN TIM64T=a
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jsr "waitForIntim"
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section "doVBlank"
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lda(0x0e)
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label ".vsyncLoop"
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sta{WSYNC}
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sta{VSYNC}
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lsr()
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bne ".vsyncLoop"
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lda(2)
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sta{VBLANK}
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lda(TIM_VBLANK)
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sta{TIM64T}
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jsr "waitForIntim"
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section "doKernel"
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lda(TIM_KERNEL)
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sta{T1024T}
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jsr "waitForIntim"
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section "start"
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-- clear zeropage
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cld()
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ldx(0)
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txa()
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label ".clearLoop"
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dex()
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tsx()
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pha()
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bne ".clearLoop"
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-- main
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label "mainLoop"
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jsr "doOverscan"
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jsr "doVBlank"
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jsr "doKernel"
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jmp "mainLoop"
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section{ name="vectors", org=0xfffc }
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word{ "start", "start" }
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]]
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