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Difficult to find upper RAM fault.I've recently repaired an issue 3B 48K Spectrum that had a tricky to diagnose upper RAM fault, so I thought I'd post a report of what I found here. …
... the initialisation time was suspiciously short for a 48K Spectrum. Using ... written by the RAM-FILL routine). Because the second DEC ( ... to capture the RAM-FILL routine passing from lower RAM to ... a little machine language test routine and perhaps that would have ... -
Your 8-bit micro preferencesWell, I kinda love [U]all [/U]8-bit machines. Yup, I've not found one that I haven’t warmed to in one way of another, but obviously there are …
... Belle (if ya like that sort of thing!)
Only had one a short while and I love it ... -
Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... an interrupt mode 2 service routine and uses POP and PUSH ... buffered display and the routine will
automatically sort it into the ... a) it's just a routine, not even as developed as ... -
Sound designer wantedAs you may or may not be aware, in a complete IP violation, and written up as a HOW-TO tutorial, I'm writing a pac-man clone. But I'm crap with soun…
... bursts)
A machine code routine
I could include beepola ... /> But has to be:
Short enough sound to not interrupt ... -
redirecting Z80 sub-routine CALLsI'm working on changing a TR-DOS disk program to work from standard +128k tape and thought that rather than painstakingly working through the code ma…
... could install some automatic redirection routine so that whenever the PC ... it would jump to my routine instead. This would be just ... -
40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... a 40 column printing routine, which I'd like ... 40 Column Font & Routine."
defb 22,5, ... /> call rst16replacement ; basically the routine replaces rst16
inc hl ... OVER flag - if 0 the routine clears space for the printed ... -
Mini scroll routineI'm looking for a routine that scrolls a small section of the screen downwards and replaces it with nothing, 2 x 2 charcter blocks to be precise, to …
I'm looking for a routine that scrolls a small section ... />
I seen a similar routine in 'Input' magazine many years ... -
Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…
Hallo,
In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler
[code]
sub light(x as uinteger,y as uinteger,intensity as ubyte)
dim adr as Uinteger
if x -
A 128 Routine to Put Tokens in StringsI was writing a DEF FN on the +128k and decided that I'd had enough of not being able to put function tokens in strings without a great palaver and s…
... I wrote this little BASIC routine to do it for me ... -
checksum routine from Space GunThis routine starts off with HL=$ffff and a file header read from tape, for each byte of which in turn it assigns to A and calls this routine, ending…
This routine starts off with HL=$ffff ... to A and calls this routine, ending up with another value ... -
Checksum routine wantedI wish to make a program that verify integrity of a Multiface 1 ROM. It is possible to compare each byte of the ROM against a binary dump, but this i…
... />
Thus, I need a routine that calculates a unique value ... -
Disabling the +3 disk buffer; yes, but how?I would like to disable the +3 disk buffer in order to retrieve those 4K from the machine's RAMdisk. By reading the computer manual and some posts on…
... call the DOS SET 1346 routine. The problem is that I ... guess I should use a short M/C program, but I ... , except that simply calling the routine with RANDOMIZE USR 319 won ... -
How to benchmark a single routine?I've written a routine. It works. But it was never meant to be the final version. So I rewrote it. The new routine works too. Yay. :) However, I'd …
I've written a routine. It works. But it was ... I rewrote it. The new routine works too. Yay. :)
Games with reflections in (i.e. with working mirrors)On another forum, the question arose of why modern games mostly don't have reflective mirrors, when they have almost every other visual effect you co…
... are close enough to some sort of energy flare, then you ... .
To keep it short, a ray-caster engine functions ...Divide or 1bis.?Hi, I'm new to these forums, having just resurrected my old Spectrum + after 25 years in my parents loft, and also having spent far too much time pic…
... to other additions, notably some sort of mass storage. As such ... and do some simple software/routine development. I have got back ...How to convert a .txt file (ASCII/PC) into a Tasword file?Short version: [B]How can I convert a .txt file (PC) into a Tasword file (ZX Spectrum)?[/B] Longer version: {Maybe I should first re-introduce mysel…
Short version:
[B]How can ... still progressing slowly. I have sort of refurbished a couple of ...Another difficult music video to I.D.It was released about a year ago (maybe two). The singer was a tall black woman in tight leather. There were two opposing phalanxes of dancers on a l…
... some sort of dancing combat theme. The singer's dance routine involved ...Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…
... 'm trying to write a routine that plots 3 pixels to ... /> call $22E5 ;call ROM plot routine
pop bc
inc ...Sampling routineLooking for a simple yet crude sampling routine that I can use on a forthcoming game. I've tried most of the ones from the archive and find them uns…
... a simple yet crude sampling routine that I can use on ... spare and just need a routine that goes "YEAH!"
Bombscare/Short's Fuse BT letterThis was posted over at my Ocean FB group in response to me posting some letters from Elite. Not sure if it's been posted here before but, if not, th…
... /> Rich Stevenson, the author of 'Short's Fuse', posted it and ...Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... [/URL] because it looked fairly short; as it happens, it turned ... and TZX files make this sort of thing so easy!
Redefine keys routineHow would I go about making a memory efficient redefine keys routine? I only want to define up, down, left and right and reserve key 'H' for pause.…
... a memory efficient redefine keys routine?
I only want ... .
The key scan routine in the game goes something ...Routine for Currah speechI'm currently writing a routine for the Currah that will provide speech during a game. A timer is set to initiate the speech every 50 cycles of the …
I'm currently writing a routine for the Currah that will ...Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... impacting the reset of the routine... enough of the postulating...
[/code]
ok the routine...
[code]
1600 ... adding extra opps to the routine.)
It should return ...Asm routine for AY playback?Hi, is possible to create and "name" an asm routine for playing some ay data? If yes, how? Example: Ok , I've finished a sound tracker song, now I n…
... create and "name" an asm routine for playing some ay data ... with or without the play routine? How does it work?
Is possible to call the routine and make it play some ...What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
... I could use the ROM routine (It would suffice, any pointers ... I'm asking for a routine :)
No need for ...Went scrambling in the Lake District.No not that sort of Scrambling :), What I mean is like a gentle form of free climbing, not very dangerous, but some physical effort needed. [quote]S…
No not that sort of Scrambling :), What I mean ... ".[3] The summit is a short walk from the top exit ...Questions about Spectrum 48K soundsHi, I find it a very intriguing task to produce sounds on Spectrum 48K, which has only a beeper. - I am very curious to know how the games produced t…
... capable to store and play short sound effects in/from the ... it's own, faster BEEP routine, because storing all it's ... 48 KB
- The BEEP routine produces a sine wave?What's going on with...Hello WoS-chops! A few people have been PMing me about the news blackout regarding all the stuff I?ve been promising recently. Okay, so I?m usually…
... a bit more time to sort things out. It?s frying ... />
Life is indeed, very short.
Maybe one day ...
