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The state of source level debuggingI was just wondering if we can put on a table everything we collectively know about source level debugging for ZX Spectrum to get an overview of curr…
... (s):
[b]- get memory block...returns bytes at address ... bytes.
[b]- set memory block...set bytes at address ... same logic as when reading memory block to simply send ... just before giving user control in Basic (with basic screen Sinclair Research Ltd ... -
how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…
... b]LD A,3[/b] in Basic :) And it was not ... be able to program in assembler. It was obvious ... ]very[/b] briefly mentioned in the Spectrum manual (Chapter 26 ... There is no assembler built in to the Spectrum, but ... I can still type from memory):
[code]
... -
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…
... head. That's not easy in BASIC, and I'd be interested ... variables and one POKEs to memory.
What's your ... your program with limits built-in. No doubt it could be ... -
How to get more than 21 UDG's in BASIC?So with graphics mode under the G cursor how many UDG's can you do from BASIC is it 21? It's all POKE 65368 and above and it's sequential ABCD.... an…
... letter. Of course, if other memory (where "font" resides) contains code ... get trash instead of listing in Basic :)
[quote="Hikaru;887099 ... "]The charset used in the Spectrum isn't exactly ... -
How to get more than 21 UDG's in BASIC?So with graphics mode under the G cursor how many UDG's can you do from BASIC is it 21? It's all POKE 65368 and above and it's sequential ABCD.... an…
... custom characters from my BASIC listing. ie when ... the start of my BASIC program
subroutine ... the system font to memory, this resides at address ... rest of the game written in BASIC follows.
[code] < ... CLS
rest of BASIC listing etc..
[/ ... -
how to fix instructions on screenI have a problem with my sequencer. I want the top half of the screen to stay fixed but allow the note values to print without pushing the instructio…
... assembly instruction mnemonics with BASIC commands and functions is ... loaded into the computer memory and you ask the ... it in the microprocessor's internal register (internal memory) called ... 'A'.
So in BASIC, it ... -
A BEEP program I want to make in Basic. Helpful remarks gratefully receivedI want to explore the possibilities of the BEEP command. So I need to be able to try different combos of pitch/duration and sequences of same. I'm tr…
... was trying to learn BASIC back in the day I'd ... effect that I could incorporate in my program, without actually ... what it did. So in that spirit, here's ... sound is stored at 32768 in memory and is called by ... than trying to do it in BASIC.
Anyway I ... -
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…
... code are tied to specific memory positions, and can't be ... when there is very few free memory available to insert bank switching ... .e. any address that ends in #FE will match, but it ... />
If I have enough free flip-flops and logic gates ... -
how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…
... Spectrum can address 64K of memory, addresses 0..65535.
... at the very top of memory.
After ... memory, so you can't type a full 41K of BASIC ... and just use that memory the same as any ... programming the Commodore 64 in BASIC you only have half the ... -
how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…
... enter commands like that from BASIC but you sort of ... opcodes. You stick them into memory with POKE.
... basic-program-sit-48k-spectrum-memory/p1
The opcodes are in ... by
RANDOMIZE USR 61000 in BASIC
If you placed your ... -
how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…
... Spectrum can address 64K of memory, addresses 0..65535.
memory.
After ... memory, so you can't type a full 41K of BASIC ... and just use that memory the same as any ... programming the Commodore 64 in BASIC you only have half the ... -
Homebrew game from 80's by Adrian KeylockTrying to track down a game by a boy I was in school with in Porthcawl, South Wales. I know Adrian made a spectrum game and I got it from a local sho…
... % machine code (as they said in early adverts), it has a ... was I wrote a game in basic with a man who erased ... , there always some nasties appear in place of destroyed stuff. You ... /> Happy to, any questions, feel free to ask! -
1987-2017Here we are, with our tradional thread about games released thirty years ago, where we can contemplate how bad they have aged, how bad they [i]alread…
... .org/pub/sinclair/screens/in-game/a/AliensUSVersion.gif[/ ...
It's blatantly written in basic, which has either been compiled ... glorius SPECTRUM SPECTRUM SPECTRUM memory bank problem happen hahahaha!< ... of release guess) a basic knowledge of German (Oooo ... -
ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…
...
I have a basic question about EPROM unit. Would ... should work with any SST39SF0x0 memory, however, the romcreator program ... assumes there is a 512kb memory, so game placing works ... the last 256kb (in a 020 memory)
In a nutshell: [b ... -
What is needed to get a high standard , "emulator focused" PC?The implication I am making is that a normal PC can be improved on emulation wise by building in some emulation friendly features . But this could be…
And not forgetting the "free" memory upgrade.
Strictly speaking , ... extra memory but it is here free and available to put in so ... there is so much "old memory" from the past "knocking around ... There is a superfluity of free stuff when you "go back ... -
DivIDE allram mode help neededHi guys, are there any DIVIDE wizards out there that can explain how i page in the allram and add a rom file to it i sometimes need to load spect…
... similar devices with compatible memory, but each use different ... known DIVMMC devices support identical memory paging = compatible with old ... ram to DIVIDE allram. In basic you can easy switch between ... from basic) use easy paging of DIVIDE/DIVMMC memory and this ... -
User-friendly UDG banks/sheetsHello, retro-colleagues) Sometimes I still play Speccyal games and try funny things in BASIC, but one thing keeps me slow: [b]sprites[/b]. Alright…
... case font because it's in ROM (well, I suppose you ... ). When you see custom fonts in BASIC programs, usually it's because ... character set as 8x8s into memory and then changed the Spectrum ... 2K's worth of graphics in my BASIC, all converted from hi ... -
User-friendly UDG banks/sheetsHello, retro-colleagues) Sometimes I still play Speccyal games and try funny things in BASIC, but one thing keeps me slow: [b]sprites[/b]. Alright…
... ]textvoyage[/b], if my memory serves me right, there ... but I might be interested in it. As for shades ... colouring them in, e.g. the trees in Michelangelo were ... using INK / PAPER colours in BASIC.
Also I made ... a mistake in mentioning the address to ... -
Memory questionsQuestion 1: PRINT PEEK 23732+256*PEEK 23733 returns 65535 for a 48K Spectrum and 32767 for a 16K Spectrum. PRINT PEEK 16388+256*PEEK 16389 return…
... when I saw it in said Sinclair Programs listings) ... machine code is stored in a REM statement at ... then could I just type in that REM statement with a ... check the amount of memory from BASIC all you need is ... You can store Machine Code in REM statements on the ... -
ZX Spectrum Next Kickstarter Launchedhttps://www.kickstarter.com/projects/1835143999/zx-spectrum-next
... -era commercial quality games even in basic.
We shall ... when you have megabytes of memory fast enough to blit ... br />
No, not slow memory, slow processors and a limited ... of gates to implement the memory architecture and the parallel logic ... -
ZX Spectrum Next Kickstarter Launchedhttps://www.kickstarter.com/projects/1835143999/zx-spectrum-next
... era commercial quality games even in basic.[/quote]
So, basically ... ;908438"]No, not slow memory, slow processors and a ... And, more important, too little memory.
[quote=" ... gates to implement the memory architecture and the parallel ... -
ZX Spectrum Next Kickstarter Launchedhttps://www.kickstarter.com/projects/1835143999/zx-spectrum-next
... I'm more interested in new software (regular spectrum ... in word processors, cp/m terminals and an adaptation of basic ... it's easy and free to do. Emulator-only ... can write a program in basic that moves a lot ... spectrum, this reduction in development time is very ... -
endless runner project..So I'm thinking of writing a small tutorial series on writing games for the speccy in C, and figured that an endless runner would be an easy example …
... a big step back from Basic on Spectrum ;) You made ... never happened to me with Basic ;)
And manuals ... , memory leaks and lot of other stuff moslty absent for example in Basic ... . Okay, you have the same stuff in asm. But in asm ... -
endless runner project..So I'm thinking of writing a small tutorial series on writing games for the speccy in C, and figured that an endless runner would be an easy example …
... that they could do some basic formatting like cursor placement, underline ... have terminals that emulate zx basic's terminal (when you print ... control codes). As you know in basic you can print certain codes ... allows, say, a full 64k memory space to be used without ... -
Flicker free animation in BASIC, is it possible ?With all my various noodlings in BASIC and indeed with my so far limited assembly I keep coming up with the same issue. How do you do animations wit…
... the 3 lines. So, elegance in this case has no benefit ... , with no memory saving.
Let me insist: in BASIC programs is ... for me the main defect in BASIC games, the slow or inaccurate ... slower than INKEY$, but equal in speed to CODE INKEY$. -
z88dk : Support FunctionsJust a quick one here, I am looking to doing some dirty dirty code with C and load a screen$ file from the disk using "system( command )" - yes I …
... it continues back to BASIC which then in turn uses the LOAD ... ROM routine from BASIC.
Now if memory serves I think ... this kind of string manipulation in ASM / BASIC before on here AA ... would need to know where in BASIC such variables would be stored ... -
z88dk : Support FunctionsJust a quick one here, I am looking to doing some dirty dirty code with C and load a screen$ file from the disk using "system( command )" - yes I …
... kind of string manipulation in ASM / BASIC before on here AA ... would need to know where in BASIC such variables would be stored ... the variable is not declared in basic, it will be created by ... fixed address in memory and then make a string from that in basic by ... -
Reading Disks via ASMI'm hoping to port my Amstrad game to the spectrum (See the link in my sig for info) I will be targeting the 128 and +3 - the game will not work on …
... are unusable except through basic. This is one example ... it occupies memory in the spectrum's memory map so ... all their disk access in basic. When you call a ... you can goto in a short basic program that will ... certain amount of memory to the basic system to allow ... -
Serious facts about the ZX Spectrum Serious fact Number 1: It is a business machine. From an article about and interview with Sir Clive ( by Mike Cowley) Sir Clive says here:-"Nor…
... : the Z80 CPU was used in many serious applications / machines. ... or a Z80 CPU core) in many serious applications.
Serious ... .
Serious fact 0x0D: in terms of RAM, the combination ... resulted in a 48k machine having more free RAM for BASIC programs ... -
are there any machine code to basic converters?i know it sounds stupid but for amature programmers like me it would be great. i could speed up the basic on an emulator and it would give me more of…
... be LET A=A+1 in Basic and so on.
< ... it not on Spectrum in Basic but on PC in C++ or whatever ... Basic this way. Commercial games written in assembler usually occupied whole Spectrum memory ... . If we converted their code to Basic this ...
