-
Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…
... 18
ld b,171 ;vertical co-ordinate to be plotted ... -
quick RAM copy using LET in BASICI'm in the process of reviewing, revising and refining all the programming tips & utility routines which I've posted on this forum over the last eigh…
... : STOP
[/code]
The vertical bars are due to S ... -
Childhood moments with my SpeccyHey everyone. The other day I randomly came across a tumblr page called "Me and My ZX Spectrum" ([url]http://meandmyzxspectrum.tumblr.com[/url]) …
... and impurities introduced by RF interference became part of the graphics ... -
Video capture from spectrumI got this usb video capture device from maplin to try and record some clips of programs running on my 48k spectrum. [url]http://www.maplin.co.uk/us…
... up the screen like the vertical sync is off.
vertical sync signal.
Anyone ... -
trying to read keyboardI have the speccy in interrupt mode 1 I used 'IM1' in assembly language then Im printing the contents of memoryu area 23560 to the screen: [quote] l…
... it.
ld a,#10 ; vertical position.
rst #16 ; print ... -
Movin And A Groovin Horizontal Flip improvementOn the left is the flip horizontal portion from Andy Pennell'S excellent Movin' & a Groovin' machine code screen routines from Your Spectrum #19 (Oct…
... is noticeably slower than the vertical one because it has to ... -
MGT MOUSE - exist really ?I read disassembly of +D rom/ram code and from address #2249 is routine for read MGT MOUSE ports. I can't find any info about "MGT MOUSE". Exist real…
... or
2254 RET Z vertical movement.
2255 LD HL ... /> 2264 RET NZ Return to vertical movement test.
2265 BIT ... -
Corrupt paper on zx spectrum 48kHi. When I power up my spectrum (issue 3) I get the light grey border, but the paper is black and it switches between thin red vertical lines and thi…
... it switches between thin red vertical lines and thicker blue horizontal ... -
Larry The Lander II-Cosmic CarnageThis Tuesday 27th around 7pm UK time i will release my last title of the year.Larry The Lander II is a SEUD vertical shooter with an automated docki…
... Lander II is a SEUD vertical shooter with an automated docking ... -
Spectrum 48k video and keyboard issueHi all, few days ago I experimented with battery supply for my speccy (48k issue 2), and I was measuring the voltage and how much current it used. A…
Upper RAM replacement module issues with the DivideI got my new upper ram replacement module from Zorn yesterday and seem to be having some issues. When the machine is without the Divide it boots up …
... black border and paper with vertical white lines on the paper ...MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …
... ;7 > 1
; Vlohi = vertical range from 0,0
; Vstep = -1/0/+1 vertical step
; Hstep = -1/0 ...Looking for a Rastan-like coin-op game.Just remembered seeing a very high-quality arcade game (quality as in good graphics and, from what I remember, high resolution). This was summer of …
... have to jump down a vertical cliff and I think there ...Faulty grey +2, or not?While I?m still fighting with two to three grey +2 computers, which doesn?t give a video signal, I received another grey +2, which acts very strangel…
... from coloured, blinking blocks to vertical stripes etc. In maybe one ...Hikoki's new gameSo putting together all Hikoki's suggestions: This is going to be an arcade maze but also a vertical/horizontal scrolling game; with puzzle element…
... arcade maze but also a vertical/horizontal scrolling game; with puzzle ...idea: new gaming interface for ZX Spectrum (48k)First of all, I am not an expert this is just an idea of what I would like to see happening in the modern era of the ZX Spectrum. A compact, small, …
... .
A compact, small, vertical interface adding some important features ... similar to interface 1 bis. Vertical orientation and as compact as ...Tricky ZX RepairHello guys, This time I put my hands on a very nice Issue 3 16K, upgraded to 48K. To bertter explain "nice", it is absolutely mint, not a scratch on…
... of the screen still with vertical red lines.
First ...Settings on oscilloscope to see composite video signalHello, Learning a bit more about my new Owon digital 2 chan. oscilloscope. Would like to know what settings I should use to view a composite signal…
... comp. signal itself and any interference/noise etc... that may be ...Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…
... , but there is a light vertical shadow in the background of ... ISSUE 6A board... sometimes the vertical shadow is stronger, sometimes almost ...Convert AT co-ordinates to PLOT co-ordinatesHow do you convert the 2 from MC? I don't know how to convert the vertical value as they're differently ordered... Heres what I have so far: [CODE]…
... know how to convert the vertical value as they're differently ... />
ld a,(50000-3) ;vertical AT co-ord
ld (x),a ;store vertical plot point
ret[/CODE]Colission detection problems.G'ah...it's always the same (I've asked before too) - I'm always struggling when it comes to doing box colission checks, so I'm basically hoping you …
... /> jr nc,cc02 ; not within vertical range.
; now horizontal check ... /> jr nc,cc02 ; not within vertical range.
[/CODE]
Help! +3Just got my +3 working after replacing the drive belt. All was OK until I plugged in my Multiface 3 (known working with a +2a) and the computer went…
... . Now all I get are vertical flashing yellow lines, plus noise ...Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…
... -around attribute map to allow vertical attribute-based scrolling.
;Use ...Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …
... ld a,(ycoord) ; fetch vertical coordinate.
ld e,a ... a,e ; restore the vertical.
and 192 ; ... /> ld e,a ; vertical coordinate calculation done.
...Might need a new ROM for an MF128Had some trouble recently that has apparently killed my MF128, basically on pressing the NMI I get black paper and multicoloured vertical lines, and …
... get black paper and multicoloured vertical lines, and just for curiosity ...ScrollsHello. Ive been working in scroll routines and I want to show you them. First, one vertical 2 pixels scroll routine with 13 sprites [youtube]D-T3…
... them.
First, one vertical 2 pixels scroll routine with ...Something I made in Minecraft...So, this is what I do in my spare time these days (when I'm sure a lot of you will be screaming for me to come back to Speccy-land; I assure you I wi…
... straight side, but making it vertical is the closest approximation. Where ...New version emulator ZEsarUX-1.1Hi I have uploaded a new version of my ZX80/81/Spectrum emulator on [url]http://sourceforge.net/projects/zesarux/[/url] Changes are: Added suppo…
... aofile WAV format
Improved vertical display synchronization on ZX80/81 ...Turning on and off internal speaker?Just wondering if this change could be done. Would it be possible to install just a switch so that one could turn on/off the sound coming from the i…
... noise or even cause some interference somewhere...?
Anyone has ...Audio in on Spectrum +2a - not working properly?I know this has been documented before but I seem to be having some issues. I have done the mod documented on here where the jack is desoldered, th…
... large amount of white noise/interference (produced by the Spectrum) which ...
