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detecting 128 mode ?quick question really, someone who programs would know I guess. am I right in thinking some things detect 128 program and adjust accordingly , say i…
... 0, copy some bytes to RAM, and page in ROM 1 ... . If the copied bytes in RAM are all the same as ... you can run a checksum routine for both ROM 0 and ... -
Edge of Disgrace on the other side :)Got my mind blown today... saw the Edge of Disgrace demo on the commie ;-) Regardless if you are a c64 fan or not, you should see it. Effects and Des…
... /> btw, you right about c64 disc drive, but it does not ... had slightly better capabilityes, plus disc drive on +3 model..
disc drive, specially loading rutine, but ... , no exception!
The routine in question was demo'ed ... -
Edge of Disgrace on the other side :)Got my mind blown today... saw the Edge of Disgrace demo on the commie ;-) Regardless if you are a c64 fan or not, you should see it. Effects and Des…
... , 6502 processor as disc controller and 2Kb of Ram as buffer space ... -
48K BASIC to ZX81 BASIC conversion possible?Looking for an automated way of converting a BASIC program done on a 48K Spectrum to one for the ZX81. It's obvious that some things cannot be done o…
... a bot though could cause RAM problems.[/QUOTE]
You ... /PopularComputingWeekly8205060014.jpg]ZX81 READ/DATA routine[/url] instead. -
Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... ULA actually owns the 16k RAM beginning at address 16384 and ... keyboard in the interrupt service routine. If you disbale interrupts, the ... interrupt routine doesn't run and BASIC ... -
PC booting problem - please helpYet again, I've been asked to downgrade a PC from Windows Vista to XP (this time a mate's niece's laptop), but I've come up against a strange problem…
... there a Vista recovery/installation disc you can try booting ... ]
No recovery disc or partition with the machine ... Vista!) that I know the routine backwards. Desktops are rarely trouble ... drive being temperamental (laptop disc CD/DVD drives are so ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... at the top of the RAM and what's left is ... works by calling the MAKE_SPACE routine.
[quote]You would need ... a machine code routine to relocate any BASIC you ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... />
org 58499 ; top of RAM
;
palette_on:
ld ... /> call 0x0556 ; input from tape routine
set_palette:
ld ... -
Magnetic Scrolls Adventures...Look at that: [url]http://www.mobygames.com/game/guild-of-thieves/screenshots[/url] all of the platforms evil c64, little brother cpc, even crappy a…
... so this will be a disc-only release.
* The ... and did fit into 128k ram. It loaded the entire game ... -
PC freezes during first 10 minutesStarting about a week ago, my PC (Windows XP) randomly completely freezes in the first few minutes after I've turned it on. I bought it near the end …
... might have to relocate the RAM, as many motherboards need ... the first RAM stick in a certain ... that can be booted from disc (Memtest or the Ultimate ... Boot Disc should do, google for ... them on a bootable disc). By running a memort ... -
many scr files to tap fileguys, I know that threads like this have existed in the past, but i'm gonna try to get a video onto speccy. The +3e to be exact. figured i'd use full…
... planning to copy the IDE_READ_SECTOR routine to RAM then just patch it ... set to the position in RAM i want it to be ... -
Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
... spectrum has nothing but contended ram and its prorgrams run fine ... ) to point at the interrupt routine. I am willing to believe ... that code executed in contended RAM could increase the likelihood that ... -
Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
... ) to point at the interrupt routine. I am willing to believe ... that code executed in contended RAM could increase the likelihood that ... -
Random access, file sizes and more.A few days ago Aowen mentioned that random access to saved data is not a problem. Here are my thoughts, doubts and suggestions regarding this subject…
... to call a machine code routine from BASIC to handle these ... doesn't need GBs of ram and some people even ... too much for the Speccy ram, why not use the ... mass storage as virtual ram?
If I ... make it fit the Speccy ram?
Doing:
< ... -
Converting games from tap to dskHi to all from Greece, Being an old Speccy user and now owner of most models of Spectrum (48k , 48k+ , 128K, +2 grey and +3) , I desided to salvage m…
... starting at the beginning of RAM PAGE 17, so if you ... loaded ram 17 to 32768 then copied ... by a short M/C routine. I wrote documentation for all ... -
more memoryi dunno if this has been mentioned, apologies if it has (i cant be arsed to search :P) Ive just been reading about the zx81 and it popped into my he…
Indeed, I should have specified 'RAM' as 'memory in the 16384- ... (ZX-ATA etc.) also added RAM in this area, used by ... must be moved between the RAM area and the ROM area ... be found somewhere for the routine that handles such. Please note ... -
Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... back buffer in non-contended RAM and add dirty cell addresses ... />
[code]
; interrupt service routine
isr: push af
Problem loading gamesHi everyone, I have a ZX Spectrum 16K (and a nice 32 K ram pack). I use a top quality dictaphone to save my files and it works really well. But here…
... , even with a 32 k ram pack
Only some 16k ... games work, with or without ram pack :(
I think ... , I think!), and maybe a disc drive (I had the +D ...shifting spriteshi. have anyone experience with shifting sprites by table ? some neat tricks ? i don't want to see complete code (really don't want, it trashes thr…
... ] then in the interrupt service routine (using interrupt mode 2), in ... got your backbuffer in uncontended RAM I presume too.
OptimisationI've participated in several thread hijacks about this, so perhaps I should open a new thread. Et VIOLA! Here it is! Knuth, who was earlier reporte…
... actually plenty of physical RAM available. This was certainly ... process starts and wants RAM, and although there's ... mountains of RAM that the first process ... in swap space on disc, it's not getting ... that mallocs most of RAM then frequently touches just ...OptimisationI've participated in several thread hijacks about this, so perhaps I should open a new thread. Et VIOLA! Here it is! Knuth, who was earlier reporte…
... actually plenty of physical RAM available. This was certainly ... process starts and wants RAM, and although there's ... mountains of RAM that the first process ... in swap space on disc, it's not getting ... that mallocs most of RAM then frequently touches just ...Platform Game Designer 2Right, with Telly Heroes out of the way, I've decided to have a second attempt at this. I've ditched the old PGD2 source, and started again with the…
... to a full 40K of RAM and rewrite AGD as a ... preshifting sprites or having a routine that handles it on the ...Problem with Spin 0.7s +3 file I/OI'm currently trying the +3 disk functions in z88dk. I've based my work upon the simple snippet Winston posted a while ago, but doing the contrary. H…
... normal mode. If you want RAM in the bottom 16k you ... "RAM banks 1,3,4 and 6 are used for the disc ... require a whole lot of RAM but I'm sure that ...Someone can help me to fix my Zx Spectrum?I did a video about the startup: [url]http://dl.dropbox.com/u/1566495/ZXSPECTRUM03.mp4[/url] I have replaced the ULA with a working one (same proble…
... very first things the ROM routine does is to turn the ... there were no RAM memoy at all, the ROM routine would, at ... the working condition of the RAM chips, but also the ROM ...My first platformerHi all! How do you do? Been lurking here for a while, but never had the courage to join the forum. :) The Speccy was my first computer, so I've alw…
... the border with a C routine like this:-
[code ...machine code player routineHi all, Collecting all my courage to ask more (rather stupid attitude from me, but so difficult to ask questions and bother other people, don't unde…
... />
It contains a sampler routine with separate player, according the ... /> the RECORD routine (no. 77) will overwrite all RAM below itself at ...Mistake in the 128K technical FAQ?[url]http://www.worldofspectrum.org/faq/reference/128kreference.htm[/url] [quote]Memory banks 1,3,5 and 7 are contended.[/quote] Really? I thought i…
... at 0xC000, paging each RAM bank in turn. (Using ... a ROM routine runs, then (possibly contended) RAM should only be ... timing of the ROM routine. And tape loading is ... or saving to contended RAM. And on 16K/48K ... tape to the lower 16K RAM (contended). On 16K models ...
