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Who read announcements?Had 23 views about a new issue of our magazine in two weeks, which really disappointed me. Maybe the announcement section is not the right place to "…
Had 23 views about a new issue of our magazine in two weeks ... />
Or is there a way people read it without being counted ... even interested just to read the announcement about a new magazine that ... -
Calculate if two segments cross in assemblerHello, Im developing a little game and I need something that I cant archieve. I have two lines (segment of a line). Line one: X11=coord X of …
Hello, Im developing a little game and I need ... have two lines (segment of a line).
Line one ... 2
I need a routine in assembler for calculating if these ... coordenates are stored like this in memory:
Y22,X22 ... -
So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…
... br /> Call48 RST #28 ; call a routine in the 48-BASIC environment
4 READ d: POKE a,d
5 ... of the target M/C routine on the calculator stack before ... calling my 'interface routine'
Since all 128K ... -
Interrupt routineI have been trying to create an interrupt routine for playing AY music in the background but cant seem to get anything working. I have a music rou…
... create an interrupt routine for playing AY music in the background but ... .
I have a music routine in bank 6 that plays with ... -
Spectrum 48+ 4S - Upper RAM issue, and now a self-created problem!I recently picked up a known-flaky spectrum off eBay, to have a bit of fun fixing it and reliving youth. It was labelled as 'keyboard duff, shows…
... labelled as 'keyboard duff, shows ramtop errors sometimes' on a sticky label ... on the back. A new membrane fixed the keyboard.
It ... ? I've received a board from Don Superfo in the US, and ... 't seem to be much in the way of info floating ... -
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…
... in 2015 and also because I wanted to write a routine ... fread(buffer,6912,1,fp_in); // read file into mem buffer
//
// store routine
if(mlen.rr> ... +length copy routine
ld c,a ; 4t - store a in c for ... -
ROM emulation in softwareHi, first of all -- I only have shallow / uni knowledge of hardware, electronics, and physics. So forgive me for asking things that are out of that …
... it is feasible.
A simple PIC microprocessor at 80 ... Mhz can execute an instruction in under 20ns. But the ZX ... timing shows that its' read cycle is 250ns. A bad, nasty PC ... and have the PC feed read the ZX Spectrum ROM ... contents of my choice in real time? -
i need a sideways scrolling program written in basicso like ghosts and goblins it scrolls along with the player. i had help with this before in making a tunnel game but this time i need it to be a able…
... help with this before in making a tunnel game but this ... to be a able to store the graphics either in strings ... that i can view in basic to make each ... intend to speed it up in an emulator. i also ... to' statement to implement this in print but am unfamiliar as ... -
New version: APULIJA-13 V2.0Hello everyone! [i]Apulija-13,[/i] the game that Jonathan Caldwell himself listed among those better showing what you can do with AGD, is back - a…
... has been dropped in favor of a top-down view ... now occasionally drop a box containing a small amount of ... music.
- New keyboard redefinition routine, allowing the user to choose ... and documentation are still available in six languages - Italian, English ... -
Alternative to Poke 23659,0 to prevent a 'break in' to a Basic Program.Good morning everyone, My memory fails me these days but in the early days of programming I used to use Poke 23659,0 as a crude way of offering so…
... fails me these days but in the early days of programming ... use Poke 23659,0 as a crude way of offering some ... />
I then recall using a new way which rendered the ... end up crashing the program in a 'Break-in' attempt.
I ... -
Fixing a poorly Issue 3 - Odd faults.Here's one for you Spectrum fixers, I warn you it's a long one. I've spent a couple hours this evening doing several repairs on a rubber keyed Speccy…
... no. Upon connecting a working keyboard and entering in a few basic commands, ... reset the Spectrum 4 times in a row it would hang up ... So removed IC13, soldered in a socket, fitted a new IC. Again the ... as though there maybe a fracture in the board possibly or ... -
The unspoken question in 2001: A Space OddesseyFrom childhood I have watched this film probably more times than I can remember. As I got older it kind of appealed to me on a different level from…
... they played Chess against a computer, and in this case the computer ... be human-like, and responds in a Eliza like manner, but also ... who were not in hibernation, prematurely, and as a result this ... or concealment and resulted in HAL entering a "H moebius loop" ( ... -
A couple of random questions......because, why not? (1) USR0 mode on the +3/+2A/B I know of its existence, I know how it's used, and I have some games that require it to work o…
... And was there some extra routine in the +3/+2A/+2B ... be used, effectively, as a command in this instance? Also, ... any references to USR0 in the +3 or + ... program that holds a small machine code routine in a REM statement:< ... on the ZX81 be typed in as, say...
... -
New/Old Spectrum UserI was recently fortunate enough to acquire an original model 48k Speccy for the cost of shipping on AtariAge and it's given me the impetus to have an…
... go at putting together a Spectrum set-up. I ... Scart was wonderful) but in the end it was ... a new keyboard membrane is in order based on what I've read ... I decided to get a DIVMMCFuture from thefuturewas8bit (SD ... someone could point me in the right direction for ... -
Playing a Game in FrenchWell thought this might be one way to improve my overall game playing performance . I came across this title in the WOS Archive "Manager" (Ere Inform…
... . I came across this title in the WOS Archive "Manager" (Ere ... appears to be a game running a Software house in France ( a bit like ... the Addictive and Cult titles only in ... /> I could put this game in the "educational" section of my ... -
Missed opportunities in the 80'sAll the talk of the Loki got me thinking... What if someone had built an expansion box for the speccy that had the 3812 Yamaha music chip ( Adlib Sou…
... Adlib or Sound Blaster with a really popular game, and I ... replace the Spectrum ROM with a RAM and loader, potentially open ... provide better games, all in a plug-in upgrade... A ready-made market with ... the original as a donor CPU, RAM and keyboard, doing away with ... -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
... ' anything there but u can 'read' from those locations. 16384 to ... ; we are putting a 1 byte number in a 2 byte register. the ... .
LD (HL), A ; stores the contents of A in the location pointed ... is a lot more involved in AL (u could use a ROM routine to ... -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
... ' anything there but u can 'read' from those locations. 16384 to ... ; we are putting a 1 byte number in a 2 byte register. the ... .
LD (HL), A ; stores the contents of A in the location pointed ... is a lot more involved in AL (u could use a ROM routine to ... -
what made u buy a spectrum?Yo spec-chums what really made you buy a spectrum?. Here is my story i was about 9 and had a oric1, poor me eh?, yes it had 48k but it was just about…
... was hopoing for a Vic 20! (I liked the keyboard!!!))).
in a big sack. I rifled thru ... eventually found a small present which was a book which read '50 Games ... and then my Grnadfather walked in with a 2nd hand colour telly ... -
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... high byte of a table at xx00 that is read for the ... location of your interupt routine.
counter is a small space to ... the plotting rountine in this thread. It has a rate of about ... .
Bear in mind this mean that for a good motion rate ... -
ZX81 Emulator (HARDWARE FREAKS NEEDED!!!!)For the ZX Spectrum I have programmed a ZX81-emulator. ZX81 games can't run directly on a ZX Spectrum due to memory adresses used by the Spectrum (li…
... could load the ZX81 ROM in it and use it. ... Spectrum screen?
In this way you can program ... 8192 - 16383 that works in the same way as SAM81 ... 49152) will be updated and keyboard read.
If ... ZX Spectrum will turn in a ZX81 at full speed!< ... -
Newer name of the gameI can't find out the name of my old favourite game. This was a Boulder Dash style game, but no scrolling screen. I think you had to collect ?beer? or…
... is a timer and keyboard controller part. There is a long waiting cycle in ... the timer routine ... think, it is looks like a pure machine code, not some ... or the game, please send a message to me.
< ... -
Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
... could have been done in a better way. It ... Flash and am probaly in a minority ) but that ... that to be somewhat of a contradiction.
4) scroll error in Keyboard input routine
5) ... ) repeatedly holding down a key in K mode will repeat ... -
Sound DreamJust daydreaming, don't beat me for this, if any of you assembler guru's (especially emulator developers) ever are in need of new ideas, it would be…
... graphics that are held in memory, in snapshots only. Any ... to be able to read and write to it ... routine that draws a polygon in Driller, say. find the point in ... the program needs to read it off the screen, ... the Gunsight sprite draw routine. Tell the script to ... -
Games and Programs written in BASinHi all, The new version of BASin is about to be released in the next few days or so, and I'm gathering up example programs to include with it. I se…
... 0. If I use this in a program then the program just ... />
Also, reading the keyboard through an IN instruction won't work ... , as the keyboard is piped through the ROM routine using a trap. I ... may alter this in future, but ... -
SDP Project ExpandingHi folks, The next Vault update isn't going to see that many +3 disks, due to poor interest. However, I've still managed to source some disks for t…
... with the format/protection descriptions in the IPF file to ... house had been painted in on a landscape later by another ... * job to discover the correct routine for.
[/quote]
< ... tackle the integrity problem using a blind read approach, then thats good ...
