-
Purchasing Advice for an ignorant AmericanHello, I am a retro computer enthusiast who lives in the United States. I am currently looking into importing a model from the UK, and would like whi…
... with an extra 32k bytes of RAM. The PCB used in the ... & keyboard were also made available so that existing owners could ... to the ZX Spectrum+. The last Sinclair produced computer before the ... computers, there are a number of different PCB revisions. On one ... -
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…
... , have an indication of the number of bytes (so when ... address possible and have the last byte at 65535), SAVE "filename" ... so much to ask of the Spectrum software available?
[/quote]< ... the features available and the size and location of your assembled ... -
Spectrum Use for ZX81 Pseudo Hi-ResHi Folks, I've been looking around at some of the "Hi-Res" stuff which was achieved on the ZX81 and I came across the faq https://www.landley.net/…
... using the standard inbuilt 1k of RAM (as long as no external ... to keep the contents of dynamic RAM refreshed). It is possible ... the screen instead of getting the data from RAM. This has ... expense of not every available pattern from the 256 that a byte can ... -
Most played games: Pirated vs BoughtMy confession of guilt in the piracy thread that I'd never legitimately bought an Ultimate game, despite playing Knight Lore to death BITTD, led me t…
... wish!
Never had one of those.
I had ... seem to use every single available byte of memory, so it was possible ... the actual game code in RAM. I even found enough apparently ... . I presume these largish areas of free space were only used ... -
Most played games: Pirated vs BoughtMy confession of guilt in the piracy thread that I'd never legitimately bought an Ultimate game, despite playing Knight Lore to death BITTD, led me t…
... always seemed to have C90s of loads of new games no-one ... gave him an unhealthy level of entitlement.[/quote]
Same ... seem to use every single available byte of memory, so it was possible ... the actual game code in RAM.
[/quote]
The ... -
Fastest emulator screen renderingHi, I'm developing an algorithm for fast emulator screen rendering and here is what I came up with. 1) Use 4bpp indexed image format as target …
... missing part of bitmap, starting at position where last instruction ... starts playing. The size of the buffer dictates the ... bufferlength of 1 sample filled and started in the available CPU ... generally returns the contents of last byte that the ULA read from ... -
If Sinclair computers had not been sold...I was just having a random thought. If Sinclair Computers (or the rights to them, not sure how it 'worked' back then) had not been sold to Amstrad…
... to refresh the “lower” RAM (the 4116 DRAM chips) ... or write to this area of RAM, it is only freshed ... . The time between the last pixel being drawn in the ... will respond to out of the available 256 (for an 8 ... being wrong about the RAM banks used on the ... -
If you had four roms...Just wondering if you were designing a Spectrum from scratch, and you used a 27512 EPROM, which would hold about 4 spectrum roms, what you would inst…
... , and with more ROM space available, both the OS routines and ... improved.
In terms of RAM, well although it’s nice ... does mean that two groups of RAM chips are needed. If instead ... . Or maybe map these 64k byte DRAM chips across the entire ... -
Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…
... further development of the Spectrum, and (b) the funds available for ... development after the launch of the ZX ... that the intended refresh of the 16K byte ‘lower’ RAM did not work ... serial port, after every byte the system may cause a ... -
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…
... /> [list][*]The various 16k byte RAM packs for the ZX81 (mainly ... . There were loads of other systems available, some far better ... connector
[*]80k bytes of RAM as standard[/list]
All ... a more flexible use of the 128K of RAM.
And ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... this points at the screen RAM at the moment. You can ... ld l, b ; low byte of hl is now the address ... l, b ; low byte of hl is now the address ... #17e0
; 16 byte buffer for drawing graphics which ... br /> [/code]
Last large code drop, I'll ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> ; this points at the screen RAM at the moment. You can ...
ld l, b ; low byte of hl is now the address ...
ld l, b ; low byte of hl is now the address ... l
ENDR
; last iteration of unrolled loop above, can optimise ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> ; this points at the screen RAM at the moment. You can ...
ld l, b ; low byte of hl is now the address ...
ld l, b ; low byte of hl is now the address ... l
ENDR
; last iteration of unrolled loop above, can optimise ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> ; this points at the screen RAM at the moment. You can ...
ld l, b ; low byte of hl is now the address ...
ld l, b ; low byte of hl is now the address ... l
ENDR
; last iteration of unrolled loop above, can optimise ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> ; this points at the screen RAM at the moment. You can ...
ld l, b ; low byte of hl is now the address ...
ld l, b ; low byte of hl is now the address ... l
ENDR
; last iteration of unrolled loop above, can optimise ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... also some keys which are available since they only produce printable ...
ld a, (hl) ; first byte of value in table
inc ... br /> ld h, (hl) ; second byte of table
add d ; add ... br /> ret
; erase last char written to screen
Favourite turbo loaders?Hey, guys. Title says it all. Which were your favourite turbo loaders/fast loaders/protection schemes, whatever you want to call them? I have a so…
... using tapes), without the drawbacks of speedlock/alkatraz.
4.- ... " their games loading the entire RAM even if it is not ... case the game loads every byte of memory (speedlock can load only ... doesn't end after the last byte is loaded. Both systems saves ...Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... a, (hl) ; first byte of value in table
inc ... ; make sure next byte of string is null-terminator ... last frame
str_prompt db "> " ; cheeky, use the first byte of ... "ERROR: " ; use first byte of key_tbl_symshift as terminator
str_nullptr ...How do I know the RAM size?Just left my parents after cleaning out my pile of old stuff in their basement. Know what I found? My old ZX Spectrum.... Those were the days! Never …
... after cleaning out my pile of old stuff in their basement ... ZX81, though.
3K om RAM, my friends!
My question ... can I tell what size of RAM I've got in my ...SPIN Public Beta 0.1b Available for downloadHi all, back again, and as just recently announced on CSS, SPIN has been updated. Here's the post to CSS (or the relevant parts): It's been a bu…
... a busy time these last couple of weeks, and there's ... br />
The list of new stuff is not *very ... * big, but some of the bugs squashed and
of stick emulations.
Fixed ... s quite a high amount of accuracy, and stuff like ...Quiz VI - Trident on VESA Local Bus.... Something to keep everyone busy while Arjun sorts out his caboodle of questions.... Ok, 12 quick fire questions.. Some cryptic - you`ll have to un…
... Arjun sorts out his caboodle of questions....
Ok, ... />
There are 15 points available this time.
...
Use whatever means of findng the answers.
last word of a Faster Than Light ...Quiz - my first attempt!And so it is! My first attempt at a quiz... 1. All answers give 1 point unless otherwise stated, for a total of 33 points. 2. Give your answers excl…
... Zone, +1 GMT) of Thursday 25th of July, 2002. Entries submitted ... ) to the Guardian in the last screen.
23. ... />
28. Among the missions available in this game there are ... have to reassemble on the last level of Split Personalities?
MakeTZX DMA Buffer Overrun ?Okay folks, Does anyone know why I get DMA Buffer Overruns when using MakeTZX. Could it be anything to do with my SB Enironment string or anything …
... 's been months since I last had this problem and now ... P3/450 with 386 MB of RAM..
Anyone got any ...The ZX-Files has been updatedFinally got around to adding my exclusive wallpapers and icons to The ZX-Files website over the last couple of months, if anyone fancies a look. Ther…
... ZX-Files website over the last couple of months, if anyone fancies ... . There is also a bunch of other stuff to download including ... games that are not yet available on WOS.
DrewPOKE, PEEK and RANDOMIZE USRAnyone got a store of useful POKES, or RANDOMIZE USR statements with interesting effects? As a start, try anything from RANDOMIZE USR 1216 to RANDOM…
Anyone got a store of useful POKES, or RANDOMIZE USR ... total amount of memory available in K, so "16" if the RAM pack ...Sam Coupe SID PlayerJust to disappoint you, this has nothing to do with the recent SID-noises-on-Spectrum thread that's been talked about on here recently. It's a 6510 …
... slower CPU speed and lack of RAM at address 0 means it ... ! Source code and details are available from:
[url="http ...memory is filled up under Win XP when opening many filesDear friends, I have the big and strange problem that ZX-Rainbow's game scanner is not working properly under Windows XP. I figured out (during a ti…
... figured out (during a time of 2 or 3 weeks) that ... opened and closed (!) files in RAM (or in the virtual memory ... if I read only 1 byte of the file, XP stores the ...
