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INPUT help?Hi folks. :) Brace yourselves, this is probably a very silly question, my BASIC knowledge is very... well, basic... Let's say, for example, I'm mak…
... into a string and compare Strings to prevent an error when text is ... entered instead of a number ... number with that text.
So use as test A$=STR ... 70 IF STR$ number=z$( TO x) THEN PRINT AT 0,0;"Correct!"[/CODE] -
The official CSSCGC 2014 threadJust to announce that the comp.sys.sinclair Crap Games Competition 2014 is now open. It's home for the year will be; [url]http://www.mykeweb.co.uk/c…
... understanding is that x = horizontal and y = vertical, however, the Speccy uses 'PRINT AT ... !
And wouldn't PRINT AT 0,0 print at the [I]bottom[/I] left ... coordinates?
Sheesh. Need a drink now :-D -
Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…
... like the SampleTracker 2.0 internal engine is pretty different than ... . Converting an 8-bit sample to a 4-bit one is easy -- just strip ... A conversion for a 1-bit speaker. After that you can start to look at ... in the 1/0 pattern when a sample changes may ... -
FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... XOR more at runtime.
The blanking that gedlion wants is still ... set pixel to all 8 set pixels. But the second is kerning can ... maybe can save that is that fzx has a 'shift' that avoids having to print the unused ... -
Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…
... output of that would be ANDed with a read operation to gate the ... 0 as a query/response code for a joystick interface identifier is a ... to latch a joystick (or any 8-bit switch input device), then a READ to ... get its data. You'd need at least 9 ... -
3D printed (reprap) case for DivMMC EnJOY!?I'm still investigating the possibilities for a case for the DivMMC EnJOY! interface. I found out modern 3D printing techniques (SLS, SLA) offer gre…
... Strong & Flexible' is dyed, I checked prices for ... a bit cheaper when ordering more than 8 cases at ... than at ShapeWays.
I already sent a message to ShapeWays ... should be able to do that with RIT dye:
0[/url]
... -
Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…
... clock cycles, a [I]burst mode[/I] read is performed, meaning that the two ... bits are not enough to enumerate scanlines (0–191) together with ... on 8-bit boundaries, allowing you to do 'INC H' to get to ... work [I]at all[/I]. I would suspect that early experiments ... -
Fast and easy read/write of attributes?What are the fastest or easiest ways to check the attributes of tiles on the screen, in BASIC? It seems to be a great way of storing object info. …
... QUOTE=aowen;772339]Using PRINT with OVER is faster than POKING.[/ ... quote]
Hmmm... How do you arrive at that ... 8 OVER 1
10 FOR N=1 TO 2000
20 PRINT AT 0,0 ... Doesn't that mean that POKE is ~40% faster than PRINT with OVER ... -
Basic program malfunctionHello. Please does anyone know why this basic program 10 LET x=0 20 LET x=x+0.1 30 print x 40 if x<>1 then goto 20 50 STOP does not properly work o…
... /> For a more general application the calculation needs to be adjusted at every ... LET x=a
20 LET x=x+b: PRINT AT 0,0;x,
PRINT "error"
150 GO TO 5
[/code ... ]
As long as (finish-start)/step is a ... -
Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…
... 10 READ d: IF NOT d THEN STOP
11 PRINT AT 0,15 ... DOTS
70 PAUSE 0: CLS : GO TO 10
71 ... B, A
LD A, C
INC A
ADD A, L ... 23677),bc ;(COORDS)
bit 0,a
call nz,$22e5[/color ... -
Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…
... post#8 done entirely in BASIC. The sub-routine is based ... . It takes 1? minutes to draw the four lines for ... 10 READ d$: IF d$="" THEN STOP
11 PRINT AT 0,15;VAL ... 500
70 PAUSE 0: CLS : GO TO 10
71 ... br /> 630 FOR N=B TO 1 STEP -1
... -
Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…
... works really well and is very quick - thank ... a demo with MC DATA statements that can be pasted in to ... 10 READ d: IF NOT d THEN STOP
11 PRINT AT 0, ... 0
9000 RESTORE 9010: READ A,B: FOR C=A TO A+B-1: READ ... />
Now to look at the code and work out ... -
Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
... ]
[*]Using DIM l$(30) is shorter and clarifies the length ... /> [/list]
Here's a version with all those changes ... >31)
150 CLS : PRINT AT 0,0;"Block Routine": LET t=x ... /> 200 FOR i=y TO y+h-1: PRINT AT i,x; BRIGHT ... -
Command and Conquer type game?Hey all One of my all time favourite games although not spectrum based, is the Command and Conquer series. I'm sure many of you are famailiar with…
... PAPER (i.e. PAPER 0 to PAPER 3) as a wall, and light PAPER (i.e. PAPER 4 to ... have a single goal (current player position that every ghost AI is chasing ... . Instead of solving the maze at once, the "incremental" variant will ... -
Interface 1bis RAM Drive modificationAll Interface 1bis users I hope I am not interfering with Dan, but I saw on his site that he has a RAM Drive upgrade/modification for the Interface …
... his site that he has a RAM ... also a wire link is required to provide ... oriented instructions: OPEN#, CLOSE#, PRINT#, INPUT# and INKEY$#. ... whereby 'station number' 0 (zero) refers to
- ... at this stage, the corresponding microcontroller firmware support is ... -
Ensure my interrupt handler begins at the same T-stateHi! Is there a way to ensure that an IM 2 interrupt handler starts always at the same T-state (related to the moment the ULA triggers the INT line, w…
... than 6 iterations! (3 at least)
;first ... ];
; align ver.0.3 copyright (c) 2013 ... number of tacts divided by 8 modulo 256).
;
that your IM2Entry is a JP nn instruction ... routine to Alone Coder's because it is clearer to read ( ... -
Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... internal counter that can't be read :p
The attr is read every ... over 32[/QUOTE]
a full cycle takes 32 frames ... ;1) THEN PRINT AT 0,0;"FLASH": GO TO 10
40 PRINT AT 0,0;" ": GO TO 10
Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... variable to be updated every frame (and a midget):< ... THEN PRINT AT 0,0;" ": GO TO 10
40 PRINT AT 0,0; FLASH 0;" ";z;" ": GO TO 10 ... , you also found that flash is off and colors are ... br /> Anyway, Basic is not enough to give a proper timing, so it ...Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... keypresses. So when the PRINT FLASH evaluates to "ON" and this coincides ... s BASIC variant which checks that a keypress has been released before ... , though. Some steps FLASH is on, sometimes it's off ... ((z+PEEK 23672)/16):
PRINT AT 0,0; FLASH f-2*INT (f ...Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... 'off' when MOD(FRAMES_lo,32) is 0->15 and 'on' when ... gives a stable white square at that point. The 'n' variable is just to indicate ... ]
1 LET z=0: LET n=0
2 PAUSE 1 ... $"" THEN GO TO 3
6 LET n=0: GO TO 3
Kempston mouseHas anyone got code to work with an emulated Kempston mouse? There seems to be some conflicting information in the internet on which bits are reset w…
... basic that I used to check if the mouse is working and how to read ... LET y=175
25 PRINT AT 0,0;x;" ";y;" "
30 IF ... emulator, it will give a menu to install the kempston mouse driver ... select a nib.
Both left and right buttons seem to do ...Fast Condition TestingHello my friends, I have been writing some input and string handling routines in BASIC lately - yeah I could write them super fast in C/ASM via z88d…
... a=1 TO 31: LET a$(a)=CHR$ 30: NEXT a:
FOR a=1 TO LEN ... l$: LET a$(CODE ... l$(a))=CHR ... /> 2901 PRINT AT 0,0;s$
2902 IF INKEY$"" THEN GO TO 2902
Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... 'off' when MOD(FRAMES_lo,32) is 0->15 and 'on' when ... gives a stable white square at that point. The 'n' variable is just to indicate ... ]
1 LET z=0: LET n=0
2 PAUSE 1 ... $"" THEN GO TO 3
6 LET n=0: GO TO 3
Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... [*]The FLASH synch offset is returned in BC (00 -& ... BASIC version, the HALT is not needed.
[*] ... 23680),a ;z=A
; 3 LET p=z+PEEK 23672: PRINT AT 0,0; ... ,FLASH
and %00011111 ;A =0 to 31
cp %00010000 ...FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... 4:3, which is what the spectrum is attached to, but these high ... this too much on old 8-bit computers but if it ... a maximum of 8. I find that somehow I needed the max to make ... word and print it, leaving a small gap at the right edge that won ...Scrolling in BASICI remember a few BASIC typeins for other machines that claimed to be scrolling the screen. Obviously vertically its not too difficult - once you dis…
... a$=a$+"- / \ / \ / \ / \ /\ / \ "
22 LET a$=a$+" \/ v v v v v \/"
100 PRINT AT 0,0;a ... $
110 LET a$=a$(2 TO 32)+a$(1)+a$(34 TO 64)+a$(33)+a$(66 TO ...Scrolling in BASICI remember a few BASIC typeins for other machines that claimed to be scrolling the screen. Obviously vertically its not too difficult - once you dis…
... PRINT AT 0,0;a$ 110 LET a$=a$(2 TO 32)+a$(1)+a$(34 TO 64)+a$(33)+a$(66 TO 96)+a ... busy remembering how to do that.
Looking at the Sea Dragon ... 't appear to actually be scrolling sideways but each element is just ...
