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PHP class for ZX Spectrum images parsing/convertingI've taken a class from ZX-Art, made it composer-friendly, refactored it and published on Github. https://github.com/moroz1999/zx-image Now every…
... br /> "standard" - standard ZX Spectrum screen memory dump. Size: 6912. 6144 bytes ... monochrome" - standard ZX Spectrum monochrome screen without attributes. Size: 6144, contains ... " - ZX Spectrum native attributes screen, 53colors achieved by using grid ... -
PHP class for ZX Spectrum images parsing/convertingI've taken a class from ZX-Art, made it composer-friendly, refactored it and published on Github. https://github.com/moroz1999/zx-image Now every…
... ;881080"]"standard" - standard ZX Spectrum screen memory dump. Size: 6912. 6144 bytes ... -
Proportional fontsI've been doing some proportional font drawing, purely on C level at the moment, but it's orders of magnitude slower than I'd want it to be. It's sti…
... it can print to the next line down. Removing the need to ... -
Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…
... with the ULA fetching the screen data. While the ULA ... only read or write that memory for two out of ... your machine code in higher memory on a 48K machine ... it has to write to screen memory, it will be slowed ... is, and how much memory it needs for variables to ... -
Why doesnt this work???Simple piece of code wont do as it should, just want to fill the top 22 lines of screen with an attribute value (150) but it wont have any of it. Som…
... should probably copy SP to memory first, then retrieve it afterwards ... stack (i.e. into the screen memory) that you don't want ... -
Why doesnt this work???Simple piece of code wont do as it should, just want to fill the top 22 lines of screen with an attribute value (150) but it wont have any of it. Som…
... should probably copy SP to memory first, then retrieve it ... (i.e. into the screen memory) that you don't want ...
An interrupt pushing to screen RAM should not be an ... display or to a screen area that won't ... won't write below the screen
push de
ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... .
One can explore screen memory, but a Z80 file also ... most games rarely update entire screen, so if we use it ... will damage part of the screen, that may take a while ... system variables, to use maximum memory, for example by using a ...Graphics program in AssemblyHi so I think I'm getting the hang of this so I've done this program. It writes directly to the screen. I'm using ZX Spin. [code] LD HL,16384 LD B,…
... of 16-bit numbers in memory. The Stack Pointer (SP ... back the number from memory and adds two back ... that grows backwards through memory. And when you do ... move into places in memory where it shouldn't ... pointer, point it into screen memory, for example, and use ...Help with Snake type game...any ideas ?Hi all I've attached me trying to write a snake type game. My first concern is me not writing over the System variables area. I'm pretty happy what i…
... the bottom edge of the screen. Looking at the listing, you ... at the edges (and overwrite screen memory/sysvars at the top/bottom ...Any interest in this?So before I went back to AGD I was working on this: [img]https://s21.postimg.org/4mljnbf1j/Image2.png[/img] It's a new editor for SpecBAS. Allo…
Looks like this is a "REMs should continue on the next line" error. I'll fix it. For now, on any line that appears green, just delete and re-type one character from that line. I'll have a fix available tonight.Control methods to support in new game (kempston, sinclair, redefinable keys etc)Hi guys, I've been busy lately working on porting a game from the C64 to the Spectrum, and I'm at the point where the main game is working pretty …
... ULA is reading from the screen memory as it builds the TV ... ULA is not reading screen data from memory.
Also note ...Screen resolutions and the Speccy's limits?What list of screen resolutions/palettes could the ZX Spectrum feasibly produce on a standard PAL TV if RAM, ULA or other space constraints is not a …
... double the amount of attributes memory, the two bytes per character ... the screen. Because that means a large increase in needed memory. And ... the larger the screen memory, the more work ...Screen resolutions and the Speccy's limits?What list of screen resolutions/palettes could the ZX Spectrum feasibly produce on a standard PAL TV if RAM, ULA or other space constraints is not a …
... double the amount of attributes memory, the two bytes per character ... the screen. Because that means a large increase in needed memory. And ... the larger the screen memory, the more work ...HELP!I'm trying to replace a bit in a byte as follows, but having some sort of brain freeze trying to get it to do what I want. A=00 if bit to replace …
... a specific pixel location line by line, with every line differing in width ... at the end of printing line is saved for the next line.Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... pieces are constructed horizontally line by line from the bottom up and ... the data for the next line, unless the line will be a back ...Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... it to run within the screen? Mask its location with ... it some kind of screen resident related name? Screen$ Chess? People were ... I like the name of Screen Chess, the original and intriguing ... incorporate chess engine in the screen memory, it would be very special ...Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... some kind of screen resident related name? Screen$ Chess? People ... incorporate chess engine in the screen memory, it would be very ... />
The 'in the screen' idea will need several alterations ... bottom 16 lines of the screen.
Additional ...Fuse 1.3.4 releasedA new release of Fuse, the Free Unix Spectrum Emulator, is now available at the SourceForge project: https://sourceforge.net/projects/fuse-emulato…
... the tape-browser opened the next line keeps being stated by the ... error parsing markup: Error on line 1: Entity did not end ...Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…
... but possibly with internal changes (screen memory, sound chip, paging, etc) then ...Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…
... but possibly with internal changes (screen memory, sound chip, paging, etc) then ...Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…
... but possibly with internal changes (screen memory, sound chip, paging, etc) then ...Another 48k Speccy acting as a 16K model.Hi all, I originally was going to post asking for help to fix the new addition to my family a very nice condition Issue 2 sold on ebay as a 16K model…
... reading the screen memory. If the ULA is reading the screen memory at the ... the ULA read from the screen memory.
By no ... are fitted, but which have memory cell defects may respond and ... very likely access the wrong memory cell.
It ...128k memory musingI've been pondering on the 128k memory thing a bit, and it's just bloody stupid. The 64k memory space is divided in four chunks. One is always los…
... in the remaining (ie non-screen) memory in bank 7. When you ... do the screen drawing you page in bank ... screens and the gfx in memory at once. I have a ... the high byte of the screen address.ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... .
For the main screen compressor I can't use ... that can store the full screen memory or 6912, this needs 13bits ... moveable windows/blocks of the screen. This functionality is more important ...ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... ="TomD;907682"]For the main screen compressor I can't use ... that can store the full screen memory or 6912, this needs 13bits ...128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…
... screen. In the 128k machines there are TWO physical groups of memory ... the screen area in this group, any CPU access in ANY memory ... CPU is trying to access screen memory or any other area provided ...im looking for a horizontal scroll routinehi, im looking for a horizontal scroll routine. i read somewhere that you can do it with at 'to' statement, somewhere in a print routine. althoug…
... ; 32 characters per line
OR A ... br /> JR NZ,SCRPLLP1 ; Next line
RET ; Return
Next byte
DJNZ SCRPRLP2 ; Next byte
JR NZ,SCRPRLP1 ; Next line
RET ; Return
