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How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... then print one to the screen
then learn how ... the screen memory works
then ... line to the top left of the screen you just do:< ... /> 16384 is the beginning of screen memory
LD means ... is a register, part of the z80 processor that holds ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... /> Which calculates the PLOT coordinates for all of the Spectrum's character ... adjusting the scale & offset of the coordinates, any character can ... the routine to PLOT an enlarging character across the screen. It's ... -
ZX Spectrum code examplesThe shortage of sites with decent code examples seems to be few. The links to alot of sites that used to host them are disappearing into the ether. …
... br />
The bitmap part of screen starts at 4000h (16384) and ...
The Attribute part of the screen starts at 5800h (2252 and ... of the screen is mapped simply by 5800h (2252 being the top left ... s a lot of interleaving of the lines. A screen loads each ... -
Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …
... a bunch of screen corruption at the top of the screen (lots of 'life' icons ... by the looks of it ... is this strange square at left bottom at first location?
left it this way.
... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... printing 4 quadrants, top left, bottom left, top right, then ... 03,$00;bomber facing north left half
defb $ ... inc h;down 1 line of screen display
inc e; ... inc h;down 1 line of screen display
inc e ... inc h;down 1 line of screen display
inc e ... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... ,$03,$00 ;bomber facing north left half
defb $80,$80 ... /> inc d ;down 1 line of screen display
inc l ;up ... /> inc d ;down 1 line of screen display
inc l ;up ... /> inc d ;down 1 line of screen display
inc l ;up ... -
Best Software Company? (Ocean or US Gold)Which one?
... is little left.
Anyway, just a handful of such titles ... : other games were Spectrum portings of Access titles (Beach Head I ... tie-ins I cant think off hand of anything genuinely 'original' after ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... once I have the screen address of the spot where I ... stack, then pop it off once the character has been ... br /> note: it expects the screen address in DE
of screen address
rra ; divide ... -
Retro Games Battle 2014Retro Games Battle 2014 started! [url]http://retrogamesbattle.com/index.php?lng=eng[/url] Archive for playing on the ZX Spectrum [url]http://retro…
... found out that at the left of the screen there was more map ... I played. I found one of the secret doors!!! But I ... times with all the pieces of the chip but died in ... lot and this is more of the same fun, with even ... will write about the rest of the games later as I ... -
What have I done....:( (Switched internet provider)I decided that I was paying too much for my Virgin ADSL broadband. ?17 a month plus a line rental from BT (?15) was totting up to quite a bit for a s…
... fun with talk talk.. they left me without internet for 3 ... should hopefully have a cooling off period of 14 days.. you need ... .. I'm sure thats part of it.
I ... PM'd you the name of their CEO and I' ... none plused.. and one of their sales people was silly ... -
How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... loads of advice from all manner of people, all of which ... put an image on the screen, you could, in BASIC ... long, in the top-left of the screen. Do 7 more ... then storing the contents of the 'a' register into ... shoving stuff all over the screen!! ;-)
It ... -
THE HOBBIT loading screenHello again, thought I'd have a go at an alternative loading screen for The Hobbit. [IMG]https://dl.dropboxusercontent.com/u/61658082/THE%20HOBBIT%…
... /> Something along the lines of "Hobbit screen graphics competition" would also ... exactly at the center of screen instead of left side (that's not ... case is that a multicolor screen takes more memory, so ... to either reduce the number of location images, or use ... -
THE HOBBIT loading screenHello again, thought I'd have a go at an alternative loading screen for The Hobbit. [IMG]https://dl.dropboxusercontent.com/u/61658082/THE%20HOBBIT%…
... displayed exactly at the center of screen instead of left side (that's not ... look good if the right of the screen had a hobbit logo ... -
What (Speccy) game are you currently playing ?(Quite a few threads on what youre listening to, watching etc) What Speccy game are you currently playing ? After playing a LOT of Invasion of the …
Tales of the Arabian Nights. I never got off the first screen at the age of ten, and I still can't at the age of thirty-mumble. Rubbish! 1/5 -
What (Speccy) game are you currently playing ?(Quite a few threads on what youre listening to, watching etc) What Speccy game are you currently playing ? After playing a LOT of Invasion of the …
... ]Tales of the Arabian Nights. I never got off the first screen at ... the age of ten, and ... can't at the age of thirty-mumble. Rubbish! 1/5 ... -
clegg vs farage debatesanyone been following these? about 20 minutes of this 2nd one left. nick clegg talks in soundbytes and comes across like he's been stood in front of…
... job of the Labour Party (which was once on the left).
left-wing.
What ... they are tapping into traditonal left-wing, working class votes.
off out of the EU?
wont ... -
clegg vs farage debatesanyone been following these? about 20 minutes of this 2nd one left. nick clegg talks in soundbytes and comes across like he's been stood in front of…
... preserve of the right. Protectionist policies typically come from the left- ... of political leaning. They have no joined-up manifesto, left or ... We would be much worse off out of Europe - for all that ... trade, trade will fall off and overall our economy will ... -
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 …
All part of the service.
If ... ] ld a,191 ;allow full screen depth
sub b
left of the 24th line.
New IF2 Cartridge: Manic MinerI want to release some IF2 cartridges for ZX-Uno. This is the first one. [url]http://zonadepruebas.com/download/file.php?id=2668[/url] I am not gra…
... 6.75K of video memory, as you're then left with only ... 9.25K to play with! Also, the whole of ... saves and restores small regions of screen content before and after drawing ... secondary graphics buffer to the screen.
Considering that ...misunderstanding screen addressingHi I am just reading mastering machine code Toni Baker: [url]ftp://ftp.worldofspectrum.org/pub/sinclair/books/MasteringMachineCodeOnYourZXSpectrum…
... understand.
For a screen co-ordinate like 5, 4 ... ]0,0[/B] - top left of the screen = 40[B]00[/B]
of the screen:
12,20 ...Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... ]
[*]Soldering the tab of the switch mode regulator and ... to tack opposite corners of all of them, then go ... and realise I had loads left. :)
[*]Even worse ... just soldered what was left of the legs into the ... on, got a white screen and a single character ...Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…
... the table memory for one-off routines (music etc.), then I ... , 64 ; 64*256 = 16384 = start of screen display
ld d, a ... 4
and 224 ; mask off bits we don't want ... /> ;ld e, a ; de = address of screen
ld (hl), e ...New Game: Sun Bucket[IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/loader_zpsbc757e08.gif[/IMG] [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhugh…
... I can't get off the menu screen. I have tried multiple ... usp, the bottom half part of the tellies and el stompo ...30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…
... row on screen (which happens for first pair of pixel lines ... , instead of starting to change attributes from the left using [B ... of screen and use [B]PUSH[/B] to modify the entire left side of screen ... have a different implementation of the loop routine for ...Abbaye des morts[url]http://www.locomalito.com/juegos_abbaye_des_morts.php[/url] Looks like Spectrum, sounds like Spectrum, but it's not a Spectrum ('cause no colou…
... Cave of ilussion screen, there is at the left bottom a group of spikes ... the extreme left of these spikes, you will appear in the screen below ...Abbaye des morts[url]http://www.locomalito.com/juegos_abbaye_des_morts.php[/url] Looks like Spectrum, sounds like Spectrum, but it's not a Spectrum ('cause no colou…
... Cave of ilussion screen, there is at the left bottom a group of spikes ... the extreme left of these spikes, you will appear in the screen below ...48K: Half of copyright message in the middle of the screen?!Issue two. Has 74LS08 over the Z80, but the ULA is 5C112E-3 (I think this should be a 5C102E??? - I have one, but I'm not sure if it is working, at l…
... learn later that the track left of C44 also needs to be ... really difficult, as a lot of things are working or I ... commands to "measure" the amount of memory. Is there anyway. without ... , to switch the upper memory "off"?displaying all memory activity in a screenDunno why I keep thinking about this, but here goes Is it easy enough to add a screen to an emulator that shows every memory address' activity.... …
... more sense for spotting runs of 0s and the like. You ... the ratio to something more screen-friendly.
Another option ... may be to leave off the 6K of screen memory, or display it ... it appears as a list of character cells. Though as it ...Why are rotozoomers on C=64 so fast ?Hi, I noticed rotozoomers on C64 are really fast. I'm not the best coder on Speccy but I know my pet I never succeed to do rotozoomer (or rotating ch…
... had had support for various screen formats. I mean, ... a four colour pallete screen with no colour clash ... CPC, plus a couple of screen modes with more colours ... fast enough to throw off the very carefully timed ... an advantage), with 128K of memory and a music ...Why are rotozoomers on C=64 so fast ?Hi, I noticed rotozoomers on C64 are really fast. I'm not the best coder on Speccy but I know my pet I never succeed to do rotozoomer (or rotating ch…
... had support for various screen formats. I mean, ... a four colour pallete screen with no colour clash ... CPC, plus a couple of screen modes with more colours ... fast enough to throw off the very carefully timed ... and offered some sort of Spectrum compatibility (Z80 add ...
