... - eat CPU time. and honestly, implementing dirty buffer ... Y axis. all together - i would always examine possibility to ... use hardware double buffering and THEN perhaps ... high byte of an initial screen address. Then there are things ...

... actually get away with fastcall and multiple paramters. I've ... lighting candles on the map, to Fastcall function:
[code ... /> sub fastcall light(x as ubyte, y as ubyte, intensity as ... pop hl ; RET address
pop bc ; B=y
ex (sp ...

... the index array and changes the DATA array to 1-dimensional.
and a 1-byte length.
REM f = FN x() variables address; d = number of dims in ... ,FN h(x):
LET y$=z$: REM move down index to be ...

... bytes
-the whole screen is 3 x 2048= 6144 bytes

The table below goes Screen Address, High Byte, Low Byte, BIN ... 's a sample of the screen at the left hand column ... d ;increase d to 67=BIN 01000011
and 7 ;get the ...

... x height option. So you could in theory select an entire screen, and ... export it to asm with ... the width and height specified. Selecting width 2 characters x ... pixel blocks, labelled according to screen address(hex or dec). ...

... the video signals /Y, U, V, VIDEO and 0Vvideo. This is ... considered emulating the extra screen modes in Spectaculator?[/QUOTE]< ... simply as possible to switch from the first address to the second. ... adjusting only 5 address lines; the process and timing of ...

... that runs from the test screen after pressing "QAZPLM", with the ... be. Mine sums ROM0 to 145 and ROM1 to 112 (which I must ... 5]"
[*]"RAM fail: address xxxx, page x" (RAM I/O error ... )
[*]"RAM fail: address 0000, page x" (ULA paging error)

... />
zx7 = 28900
x = 40000
y = 31232

I ... I entered RANDOMIZE USR 32000 to start the game after the ... into the emulated Spectrum at address 28900 and saved the resulting code ...

... you have object X?' or 'is flag Y set' and if so, ... of the screen.

If you want to get more ... on the same or another screen) that only open for ... be 'are we actually on screen N?' before changing a ... the player has left the screen).

By ...

Cheers na_th_an, the quest to reduce initialisation time will continue!< ... the bottom of the screen, and the ident and the graphic is colour ... sporg basic v0pt022 20130308 - next to do = print npc name, stats ... SUB 9900
2000 GO TO 2210-200*w
2010 ...

... x (where x is an address) calls machine code at the address you specify, and ... 10 USR 32768), you have to do something with the value ... USR x will obviously print the value that was returned to the screen ... but often you don't want to do ...

[QUOTE=Zup;700779]And a question related to commercial loaders. Because ... will usually switch back to a normal configuration fairly quickly ... CODE files and then disassemble the loader blocks to check ... " AND y=m,"s=" AND y=l;: NEXT y
1200 INPUT d$: IF x

... Z=Sinc(Sqr(X^2+y^2))
30 SCREEN LOCK
40 ... : FOR x=1 TO np: LET yn=-10: FOR y=1 TO np: LET ... pts(f,1)=x: LET pts ... SCREEN: CLS: INC a,PI/180,0 TO 2*PI*3: GO TO ... that into a text file, and run it - just a little ...

... only specifiable to character spaces or can it utilise specific screen coordinates ... on screen. For instance:

[CODE]PRINT #4;AT y,x;"FZX ... (pixel line from 0 to 191) and [B]x[/B] is the horizontal ...

... Software has to frequently and continously run the subroutine to keep track ... you could move across the screen in a reasonable time. ... current position to get a 'delta' and then adding that to an ... one for the X direction and one for the Y direction each time ...

A galois lfsr is simpler to implement. Here's a version ... Galois LFSR
; x^16 + x^14 + x^13 + x^11 + 1

dec hl ; alter lfsr range to include 0

; only ...

... it the way I want to do it, so I ... it as a binary at address 49152.

This ... not too hard to change the code to do that.
; x^16 + x^14 + x^13 + x^11 + 1
... /> dec hl ; alter lfsr range to include 0

; ...

... change ‘when player meets screen edge’ to ‘next screen. In this example I ... am also setting ‘Screen complete when’ to ‘counter 1 zero’. So ... per screen and there are nine screens, we set counter 1 to 18 ... default start position is at x,y 0,0. If you want ...

... Did not go past screen 1 but I can already ... (they tend to have your x or y coordinates even behind ... or do you have to prgram them yourself?[/QUOTE ... type to chaser and it will chase you around the screen. ... It's really easy and very versatile ...

... initialise routine pointers and set hiscore to 0.
... NOT DEAD AND NOT WON THEN GO TO 1110
screen and update score line.
1190 PRINT AT Y,X; ... REM use flashing input to wait for entry before ... taking last segment and moving it to the from.

... to many X-files.

So figured I would plough through and ... Y=CODE A$-48: IF Y>9 THEN LET Y=Y ... /> 60 POKE X,16*Y+Z
70 LET X=X+1
... you want them to be and not leave things to chance.
screen.

Just ...

... the screen up to eight pixels in X or Y (the X movement ... low res multicolour graphics) and after that everything is ... 's a character-based screen on most games that ... (1,000 bytes of screen RAM ignoring the colour ... if you don't) and double buffering makes it ...

... e=b(8-x+c*8)[/COLOR]
[/code]and p removed ... with "LET e=2^( 7-x+c*8 )" would always be ... ,4,5 and changing line 6 to PLOT 255-x,175-y: RETURN) the ... it was designed for ellipses and so is doing a lot ... the coordinates into a POKE address & value which is ...

... used for addressing the data to the screen is very inefficient.
200 REM Clear screen and setup variables
210 REM ... )
680 LET x=x+x(i)+kf: LET y=y+y(i): LET p$=b ... LET sb=se: LET y=y+1: GO TO 2020
5000 REM ...

... x, x
fcp .lz ; x, (1/0)
fjpt pf_negtve ; x
fmove ; x, x ... y
fmove ; i, y, y
fint ; i, y, (int (y ... count to C
add hl, bc ; address first ... to print to A
and a ; still zeros to ...

... br /> jp po_scr_3 ; scroll the screen and return

; ... screen address
inc hl ; next bitmap address
ld a, (de) ; byte to ... ; x
fstk1 ; x, 1
fadd ; x + 1
fstk ; x ...

... ; restore carry flag
ccf ; and complement
jr str_test ; immediate ...
ld (ch_add), hl ; start address to ch-add
set 7 ... /> fmul ; x/log 2 = y
fmove ; y, y
fint ; y, int y = n