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ZX memory questions1. what is the highest address in a 48k spectrum that can be written to? 2. can you write to an address less than 16384 (on real hardware) 3.48k...…
[QUOTE=ASH-II;750225]4. excluding the screen memory and attribute table how much free memory is available in a 48k machine[/QUOTE]
49152 - 6912 = 42240 bytes -
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. …
... ). You can test this in basic by poking values to any ... The value you poke in will change the character ... 2k and 4k further on in memory. You may have noticed ... byte to the next memory address, but that isn ... 256 bytes further on in memory and then 256 further ... -
Programming again with the ZX SpectrumI am going to take a blast at programming for the Spectrum again. Its bee a long time since I have done this. I need to refresh my memory and maybe l…
... straight in with machine code. Trying to pick up BASIC ... with BASIC, again, do it on your PC, in something ... read up on the Spectrum memory map, read up on ... examples, and get stuck in. On a PC, set ... it).
Remember in BASIC if you type PRINT USR ... -
A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
... it well. A file created in BASIC (with SAVE) will always have ... .
I usually save memory chunks from emulator to hard ... -
A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
... it well. A file created in BASIC (with SAVE) will always have ... .
I usually save memory chunks from emulator to hard ... are created by saving the memory range to disk so all ... -
Ghosts n' Goblins loaderI'm trying to put Ghosts n' Goblins onto a +3 disk but struggling to understand the mc loader. Basic loader [code] ink 7 : clear 25000 : load "" cod…
... disk usage (well, at least in BASIC it does)? I usually load ... launching the main code) lock memory paging.
Also, I ... ... it does not prevent paging in and out nor prevents disk ... -
Best game writte in BasicThere's probably already a thread about this but who cares. I'm going for Rebelstar raiders.
... compelling gameplay.
If memory serves, Oracle's Cave contained ... was it Manic Miner?) written in Basic. There were also some games ... made in Spain in the past few years, for a Basic compo ... , but I recall this BASIC competition a number of years ... -
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 …
[QUOTE=Turrican;756925]The logo is very good, but I think that Ralf can?t use it.
Ralf had to free memory and the logo was ripped off because that. :)[/QUOTE]
It might be possible to keep it in 128k mode. -
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 …
... most things, in software you don't get anything for free. It ... would certainly save memory if you programmatically ... of reading the data from memory in reverse order and therefore had ... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... night :-)
It's written in basic with the plot routines from ... br />
I wrote the basic part by refrencing this pseudocode ... foreground
64k of memory that can contain user defined ... through first. That way the basic rom plot routine can be ... -
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…
... ZX80, way back in 1982. I started with BASIC and then used ... from registers in locations in RAM, it adds numbers in registers... and ... on the screen, you could, in BASIC, do:
POKE 16384,255 ... 'a' register into the memory location held in the HL register pair ... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... />
For example the basic ROM writes to the attribute ... with the printing of characters in basic the following clashbasher commands ... ink colour using standard sinclair basic plot, draw and circle ... with the background in a different area of memory and then ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
...
BIFROST* doesn't work in Brazilian models TK90X and TK95 ... games may not need enough free memory to do it. If ... ROWREPT is referenced five times in each identical LINREPT block ( ... 110 bytes compared with patching in ROWREPT values after decompression? ... -
Game codeHi Quick questions. Would a game such as manic miner of the hobbit have been written just in basic or will it have been assembly? Also these slow …
Yes, these games are written in assembler.
As ... from tape to memory by LOAD "" SCREEN$ in Basic (which actually triggers ... can be also loaded to memory by your own machine ... But in both cases loading will be "slow". Standard Basic loader works ... -
Game code view DebuggerHi Is opening up a game such a manic miner in a debugger such as spin going to give me a true view of the code used in developing the game? Cheers
I heard about programmers originally starting in basic and being forced to adopt and learn assembly to speed up code and fit programs in memory.
That was actually a bbc micro programmer who said this -
Game code view DebuggerHi Is opening up a game such a manic miner in a debugger such as spin going to give me a true view of the code used in developing the game? Cheers
... /> Or would they write routines in basic then re-write them routines ... fragments of assembly code left in memory, and Jet Set Willy even ... cross-develop was greatly reduced. In fact, the SAM Coup? was ... assembly on the machine itself in its high resolution 512?192 ... -
Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …
... , it needs a patched BASIC ROM to page in the 'Shadow ROM ... '.[/quote]
In that case the easiest thing ... onto the device.
In the source I assume all ... ? There is a enough free space in SE Basic 4.0.7 for ... -
Read Data from memoryHi there. Not been on this scene for a long time. Does anyone know how to do a routine to read data from memory(peek..etc) rather than using lines of…
... two copies of the DATA in memory. The solution is to SAVE ... LOAD it along with the BASIC program [i]without[/i] the ... your method and read from memory which works. Trouble is when ... on screen. It seems ok in basic, but when I compile with ... -
Read Data from memoryHi there. Not been on this scene for a long time. Does anyone know how to do a routine to read data from memory(peek..etc) rather than using lines of…
... lot i am struggling with in basic...Cheers again...;-)...[/QUOTE]
I ... a fastcalled instruction to copy memory.
if you want ... can try this to copy memory:
[CODE]
DI< ... /> RET
[/CODE]
in Sinclair BASIC use this:
[CODE]
Re: Trying to find a game.I am hoping someone can help me regarding a game I use to play on the Spectrum 48k back in the early 1990's. I have been searching for a year without…
... to find - just because our memory does not preserve the information ... was sure I remembered them in a certain way, but when ... information that could aid you in finding the game. Like, publish ... dots, it was probably written in BASIC, not in ASM code. Did you ...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. …
... poking the vars as needed in basic then USR to whichever jp ... address of the specified attr in memory
ld de, (posx)
in memory
ld de, (posx)
in de to return attr address in memory in HL
ld ...Popular Computing WeeklyHope someone can help me, I've been typing in a whole heap of early Type-ins for the Amstrad CPC 464 and have typed in a program, though it's not wor…
... placed Semi-Columns after variables in the Tone Envelope Menu ... the original program was written in BASIC 1.0, so there maybe ... :D
But feel free to make feedback, the program ... were just beginning to appear in these interesting Multi-Platform ...ProTracker manual/instruction in English?Hello. A friend of mine would like to start making AY music on ZX Spectrum. In this purpose he'd like to have a ProTracker's instruction/guide/manu…
...
Use -96 displacement in ornament for fix every note ... br /> Since v3.697 memory isn't being cleared before ... Loader:
Setups are in basic block:
5d3b, 5d3c = colours ...
Special commands (right column in every channel):
...Cassette 50 vs Rise Of The RobotsHaving been a Spectrum owner since 1984 I have played some of the best and worse games the machine has to offer, so my question is: Is the Spectrum …
... bit of fun. Games were in their infancy and coders were ... at least you got a free calculator watch! And just loading ... if I recall some were in basic, so you could break into ...Cassette 50 vs Rise Of The RobotsHaving been a Spectrum owner since 1984 I have played some of the best and worse games the machine has to offer, so my question is: Is the Spectrum …
... at least you got a free calculator watch! And just ... if I recall some were in basic, so you could break ... Cassette 50 was almost entirely BASIC games. I seem to ... was too smooth for BASIC. I may be wrong ... t know enough about programming in BASIC, but most of what ...ZX software/games with IDE supportMaking games with loading data from FAT16/32 is not so hard. For example text adventures or dungeons... Small example (screens are stolen from russi…
... fullscreen and fast graphics without memory limits. In basic is possible make text ... adventures,dungeons and similar slow games. In ... of this new software - loading in emulators from TAP file will ...The Flintstones - help![URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0001799"]The Flintstones[/URL] stuck on the first level where apparently you have to paint th…
[QUOTE=Nonsense in BASIC;789386]I seem to remember ... from a 25 year old memory. Haven't had time to ... to the Sega Master System....in 1993! :o[/QUOTE]
48K Ram Check Command not workingI am trying to repair my Spectrum 48k. It is having issues loading games, sometimes they load all the way to launch and then the speccy resets. Oth…
... you did in post 8?
Repeat the memory test BASIC commands ...48k Stops loading and resetsI've just fixed the problem I had with my Issue 2 Spectrum only showing 16k memory by replacing all of the upper ram. With that job done I've done a …
... ]you could write a basic program to peek and ... ) as you can overwrite the basic program and variables.
... live on ROM or in the screen memory (think of "The ... Key") as assuming screen memory would be noticed that way ... the rest of the memory in safety...
