mirror of https://github.com/g012/l65.git
92 lines
3.4 KiB
Plaintext
92 lines
3.4 KiB
Plaintext
require'vcs'
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mappers['2K']()
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local tmp = 0x80
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section{ "font", align=256 } dc.b
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,-- <SPC>
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0x18,0x3c,0x66,0x7e,0x66,0x66,0x66,0x00,-- A
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0x7c,0x66,0x66,0x7c,0x66,0x66,0x7c,0x00,-- B
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0x3c,0x66,0x60,0x60,0x60,0x66,0x3c,0x00,-- C
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0x78,0x6c,0x66,0x66,0x66,0x6c,0x78,0x00,-- D
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0x7e,0x60,0x60,0x78,0x60,0x60,0x7e,0x00,-- E
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0x7e,0x60,0x60,0x78,0x60,0x60,0x60,0x00,-- F
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0x3c,0x66,0x60,0x6e,0x66,0x66,0x3c,0x00,-- G
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0x66,0x66,0x66,0x7e,0x66,0x66,0x66,0x00,-- H
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0x3c,0x18,0x18,0x18,0x18,0x18,0x3c,0x00,-- I
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0x1e,0x0c,0x0c,0x0c,0x0c,0x6c,0x38,0x00,-- J
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0x66,0x6c,0x78,0x70,0x78,0x6c,0x66,0x00,-- K
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0x60,0x60,0x60,0x60,0x60,0x60,0x7e,0x00,-- L
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0x63,0x77,0x7f,0x6b,0x63,0x63,0x63,0x00,-- M
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0x66,0x76,0x7e,0x7e,0x6e,0x66,0x66,0x00,-- N
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0x3c,0x66,0x66,0x66,0x66,0x66,0x3c,0x00,-- O
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0x7c,0x66,0x66,0x7c,0x60,0x60,0x60,0x00,-- P
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0x3c,0x66,0x66,0x66,0x66,0x3c,0x0e,0x00,-- Q
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0x7c,0x66,0x66,0x7c,0x78,0x6c,0x66,0x00,-- R
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0x3c,0x66,0x60,0x3c,0x06,0x66,0x3c,0x00,-- S
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0x7e,0x18,0x18,0x18,0x18,0x18,0x18,0x00,-- T
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0x66,0x66,0x66,0x66,0x66,0x66,0x3c,0x00,-- U
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0x66,0x66,0x66,0x66,0x66,0x3c,0x18,0x00,-- V
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0x63,0x63,0x63,0x6b,0x7f,0x77,0x63,0x00,-- W
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0x66,0x66,0x3c,0x18,0x3c,0x66,0x66,0x00,-- X
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0x66,0x66,0x66,0x3c,0x18,0x18,0x18,0x00,-- Y
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0x7e,0x06,0x0c,0x18,0x30,0x60,0x7e,0x00 -- Z
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charset(" abcdefghijklmnopqrstuvwxyz", \x(x*8))
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@@text_hello dc.b "hello world"
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local print_txt = tmp+1 -- text pointer, can cross
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local print_line_count=tmp -- number of lines to print
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local print_ptr = tmp+3 -- array of pointers to the characters
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-- a = line count
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@@print12
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sta print_line_count
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lda#6 sta NUSIZ0 sta NUSIZ1
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-- set MSB of font character addresses
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lda#font>>8 ldx#23 @_loadfont sta print_ptr,x dex dex bpl _loadfont
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-- position sprites
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samepage
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sta WSYNC
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ldx#6 @_delay dex bne _delay
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sta RESP0 nop sta RESP1 lda#0x70 sta HMP0 lda#0x60 sta HMP1 sta WSYNC sta HMOVE
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end
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@_loop
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-- load text line
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ldx#0 ldy#0 @_loadline lda (print_txt),y sta print_ptr,x inx inx iny cpy#12 bne _loadline
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lda#0x80 sta HMP0 sta HMP1
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ldy#0 samepage @_printline
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sta WSYNC sta HMOVE
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-- first scanline
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lda (print_ptr+2),y sta GRP0 lda (print_ptr+6),y sta GRP1
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lda (print_ptr+22),y tax sleep(6)
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lda (print_ptr+10),y sta GRP0 lda (print_ptr+14),y sta GRP1 lda (print_ptr+18),y sta GRP0 stx GRP1
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sta HMCLR sleep(8) sta HMOVE
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-- second scanline
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lda (print_ptr),y sta GRP0 lda (print_ptr+4),y sta GRP1
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lda (print_ptr+20),y tax lda#0x80 sta HMP0 sta HMP1 nop
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lda (print_ptr+8),y sta GRP0 lda (print_ptr+12),y sta GRP1 lda (print_ptr+16),y sta GRP0 stx GRP1
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iny cpy#8 bne _printline
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end
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dec print_line_count beq _end
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lda print_txt clc adc#12 sta print_txt lda print_txt+1 adc#0 sta print_txt+1
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jmp _loop
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@_end
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lda#0 sta GRP0 sta GRP1
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rts
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local kernel = function()
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ldx#40 @_blank sta WSYNC dex bne _blank
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setptr(text_hello,print_txt) lda#1 jsr print12
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end
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@@main
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init()
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lda#0xaa sta COLUP0 sta COLUP1
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@_frame
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overscan() vblank() screen(kernel) jmp _frame
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;
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writebin(filename..'.bin')
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writesym(filename..'.sym')
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print(stats)
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