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How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…
... done by direct writing into screen memory - it will be rather short ... -
How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…
... routine to show themm on screen.[/QUOTE]They don't have ... bitmap data copied to the screen, or drawn using a simple ... quoted above but straight into screen memory. -
How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…
... done by direct writing into screen memory - it will be rather ... routine to show themm on screen.[/QUOTE]
[QUOTE= ... bitmap data copied to the screen, or drawn using a ... quoted above but straight into screen memory.[/QUOTE]
...which ... -
'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…
...
The arrangement of the screen buffer is another of those ... )[/quote]
The screen buffer starts at location 64 ... print a text string to screen memory.
; The string to ... ; D = Y-coordinate on the screen
; E = X-coordinate.
testing if speccy is fully functionalHi, There is so much mention of T states but still confused. Does this mean if an instructin is out by a T-state or more then the speccy is faulty?…
... kind of indication even if screen memory is faulty (and therefore nothing ... can be shown on the screen). - for example, this one here ...Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…
... to be copied to the screen memory area prior playing?... (Im guessing ... the screen area being faster to access than other areas in memory ... stored elsewhere, without corrupting the screen area?... It would be nice ... HAS to be in the screen area (cos that will mean ...Loading screen recreation in HTML 5I have just developed a LOAD "" SCREEN$ simulation using the new canvas object in HTML. It is imitating the image bytes loading, as well as the attr…
... into ZX Spectrum screen memory has different effect on screen (top, middle, lower ... , short header (+file name on screen), pause, another lead-in, and ...Loading screen recreation in HTML 5I have just developed a LOAD "" SCREEN$ simulation using the new canvas object in HTML. It is imitating the image bytes loading, as well as the attr…
... into ZX Spectrum screen memory has different effect on screen (top, middle, lower ... , short header (+file name on screen), pause, another lead-in, and ... real SCREEN$, and you are right. Video memory is rendered on screen as ...Poli D?az reviewAnother review, this one is Poli D?az, El Potro de Vallecas, a boxing videogame featuring Spanish and European champio Poli D?az. I hope you like it!…
ZX Spin allows BMP, GIF and Screen memory Dumps.Poli D?az reviewAnother review, this one is Poli D?az, El Potro de Vallecas, a boxing videogame featuring Spanish and European champio Poli D?az. I hope you like it!…
... Spin allows BMP, GIF and Screen memory Dumps.[/QUOTE]
OK ...Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …
... contetion (and you copy to screen memory very often). having contetion penalty ...Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …
... is to POP from uncontended memory during the contended part of ... pixels of one screen line), then PUSH to screen memory during the uncontended ...TIMEX 2048: anybody can convert GIGASCREEN?Hi. Timex 2048 has stable GigaScreen (no flickering at all). I know there are several big TC2048 fans on the Forum. Could anybody write a viewe…
... it almost twice as big Screen memory as Spectrum (6144 bytes of ...TIMEX 2048: anybody can convert GIGASCREEN?Hi. Timex 2048 has stable GigaScreen (no flickering at all). I know there are several big TC2048 fans on the Forum. Could anybody write a viewe…
... it almost twice as big Screen memory as Spectrum (6144 bytes of ... much as the Spectrum has "screen memory"; there are some details in ...Just for funJust for fun, imagine the Spectrum had a graphics mode where there were two attribute bytes per 8x8 block and each block had 2 bits per pixel choosin…
... it for a four-colour screen with no clash, like the ... scrolling when there's more screen memory to shift around, but it ... actually uses a character-mapped screen in this mode so you ...SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…
... code
* Renumber
* Full screen input e.g. INPUT AT ...
* FRAME command to sync screen output
* MOVE command to ... error
* Ability to store screen memory x,y,w,h
* ON BREAK
* CALL memory address or sub program
Just for funJust for fun, imagine the Spectrum had a graphics mode where there were two attribute bytes per 8x8 block and each block had 2 bits per pixel choosin…
... it for a four-colour screen with no clash, like the ... scrolling when there's more screen memory to shift around, but it ... actually uses a character-mapped screen in this mode so you ...SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…
... as some kind of weird screen memory layout) then it might struggle ...Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... POKEs the data in to screen memory to create the double height ... quite quickly and obviously the memory footprint is low.
How do you work with fonts on speccy?just curious really.. I know c64 workings, and obv. the spec you draw direct to screen.. on 64 , you'd make what would be equivalent to UDG.. and sa…
... store new letters somewhere in memory and change this variable to ... graphics - copy its data to screen memory.
So yes, font ...How do you work with fonts on speccy?just curious really.. I know c64 workings, and obv. the spec you draw direct to screen.. on 64 , you'd make what would be equivalent to UDG.. and sa…
... code applications that access the screen memory directly, though, there are ... no particular tricks: the screen is bitmapped, and the ... arbitrary graphic data stored in memory, so printing double-height ... of font data to the screen rather than the usual ...How do you work with fonts on speccy?just curious really.. I know c64 workings, and obv. the spec you draw direct to screen.. on 64 , you'd make what would be equivalent to UDG.. and sa…
... the one on screen changes instantly. The Spectrum screen is bit-mapped ... , so you draw on the screen by copying character pixel data ... into the screen pixel data area.
screen memory is just one byte per ...DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…
... data blocks from the memory to an external device ... to define different screen memory blocks inside the Spectrums memory (or in ... an external memory) and to ... ) screens to the plain screen memory. That way very fast change ...Loading BASIC programs stored as "bytes:"Hi all, I have a question regarding loading BASIC programs, that I managed to save as machine code (I suppose) when I was a child, as a result of e…
... non-zero-length program in memory. At the very least, you ... massive Bytes: block spanning the screen memory, system variables, program data and ...48k games developed on the 128kSeeing as I don't know enough about this subject(or the history of assemblers/C/C++/BASIC/FORTH/COBOL/whatever programming kits), I thought I'd ask h…
... + program text sitting in memory, we can't write a ... that would use all the memory. And program listings can ... assemebler program being placed into screen memory or compiling the program ... without graphics (graphics memory area was used by running ...Vic 20 game better than Speccy version?Years ago, when I had my Vic 20 I had a game called Blitz, it was on the welcome tape in fact. Very simple game, but strangely addictive. For those t…
... at the bottom of the screen, so not only have I ... display into the ZX 256x192 screen, but I'd have to ... will be the relocatable VIC screen memory, I wrote some code which ...VIC 20 on the SpectrumThe original "20 Commodes" program released for CSSCGC 2008 has been improved and now has its own entry in WoS. The improved code has been sitting on…
... /+3 only)
3) VIC Screen memory is now relocatable
4 ... pointer are reflected on the screen immediately (try pressing CAPS+SYM ... +C on the emulator screen)
If you only ... see the improvements made in screen update and general CPU speed ...Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... is an organisation of Spectrum screen memory. It may be really hard ...inverting graphics using basic?just curious if it could be done by poking screen memory ? and what's the structure. (foreground / background for each char ? ) reason I ask is I'd …
... could be done by poking screen memory ? and what's the structure ... the attribute by POKEing the screen area. It's not the ... are stored serially after the screen data at 22528. The attribute ...Moving screen while BEEPER's playing?Hi. For some time I think about it. First time I saw it on YouTube, on ZX Spectrum Orchestra video. Effects are of course rather simple but still…
... when you start writing to screen memory, that affects the timing of ... have to synchronise with the screen refresh. Either way, it messes ... effects whilst copying to the screen, but only noises - I haven ...
