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Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…
... of character in video memory
ld b ... Y0
Memory address (ZX Spectrum arrangement)
Memory address (C64 arrangement)
... byte of the display memory address, we increment ... high byte of the video memory address)
Android memory questionErm, I was sure there was already a thread about this before but I couldn't find it, perhaps it's deleted or something. So I'm asking this again. I …
... ), but it fills up its memory pretty fast (and gets real ... the SD card help reduce memory usage?
Thanks in ...Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …
... /> I'm looking for a modern PSU for my Spectrums and ...Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…
... such problems, the paged in memory behaves itself as it should ...Smokin... more 48k woesHi, it looks like I've converted another Spectrum 48K+ into a smoke machine. I'd been rebuilding an Opus Discovery unit and everything looked good. …
... a diagnostic ROM and the memory is all OK, as is ... motherboard with Zorns lower RAM module and a composite mod. Prior ...48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…
... end.
Ran the memory test
PRINT PEEK 23732 ...AGD memoryHow low has anyone got AGD memory showing but still works without crashing or errors. My Monty game is showing 30 and will not allow you to open any…
How low has anyone got AGD memory showing but still works without crashing or errors.
My Monty game is showing 30 and will not allow you to open any events to edit. If I add just one letter to any text it crashes big time, full reset.How noisy are modern laptops?I get lots of complaints from the missus (doesn't surprise me - Ed.) about the noise from my netbook. The old machine is getting on a bit now so wan…
... to be a laptop as modern decent netbooks are all over ...best of this modern "all-in-one-retro consoles"I'm thinking on buying one of this for christmas? I was doing a bit of search and I found this 2 the RETRON 5 and the SUPER RETRO TRIO [url]http:…
... where you could put a memory card and have pretty much ...Spectrum +2a memoryHi all, Happy New Year. A quick question, I have a Spectrum +2a that I am seeing a very intermittent fault, once every 20 - 30 power ups. I plug…
... to fail the lower 16K memory test.
Does anyone ...ZX Evolution -- contended memory and raster emulationFresh bleeding update for [url=http://www.nedopc.com/zxevo/zxevo_eng.php]ZX Evolution[/url] [url=https://code.google.com/p/pentevo/source/list]Baseco…
... -- raster and ULA contended memory emulation for original 48k and ... />
1. Contened memory is emulated as described here ... some help with raster/contended memory
Mike & ... valuable insight into contended memory topic and useful discussions.< ...Chess on the ZX Spectrum<p>Which was the ultimate Chess Program for the ZX Spectrum?</p><p><br></p><p>Was there a superior version for the 128 K models that made good progra…
... programming use of the extra memory for strategy?I have recently ... my VIC 20 against a modern dedicated Electronic Chess Set, the ...Contended memory and TritoneQuick question regarding contended memory...<div style="font-style: normal;"><br></div><div style="font-style: normal;">I'm testing ideas with Triton…
Quick question regarding contended memory...
I'm testing ideas ... the player code after 0x7fff memory address and the data in ... contended memory, and it doesn't seem ... being run from non contented memory, so I think it actually ...BASIC to Python - bringing a modern view on an 80's obsession...Howdy! I don't know how relevant this will be here, but I've just finished up a 3-part overview on my blog where I convert an old 1K ZX81 basic pr…
... "home computing language" of the modern age - its easy to learn ... it holds up on a modern machine.
Here's ...Memory testersHi, Just wondering which software people are using to test the memory in their spectrum. I have been using Zorn's memory tester as described here:…
... are using to test the memory in their spectrum. I have ... been using Zorn's memory tester as described here:
48k Memory MapIs there a link or info anywhere that explains the 48k memory layout? My game uses double buffering and I'm trying to decide where the best memor…
Is there a link or info anywhere that explains the 48k memory layout?
My game uses double buffering and I'm trying to decide where the best memory location should be.Sinclair QL bad memoryI googled around trying to see if there was a resource for this but didn't really find anything specific. I have a QL with the white screen proble…
... screen problem which indicates bad memory, so I plopped a Minerva ... you addresses of the bad memory...Problem is that doesn't ... help me identify which IC memory chip it is. Is there ... " a good chip on each memory chip but the only result ...Recommend-me-do - memory card devicesSo, both myself (with a +3 that has a dodgy drive) and my friend (with a +2) are looking at the various options for loading from memory card. What…
... various options for loading from memory card.
What do ... to find their way onto memory card?modern games to downloadHello everyone I have been meaning to download all the modern/new releases for a long time and check them out. I am thinking all releases from per…
... meaning to download all the modern/new releases for a long ...The history of ESXDOS, the DivMMC and the DivMMC EnJOY![img]http://benophetinternet.nl/hobby/divmmc_history/1%20esxdos.jpg[/img] These are the stories behind esxDOS, the most popular operating system e…
... /> - swap partition
- virtual memory up to 4Mb
modern parts only
▪ The ... ZXMMC.
The DivMMC memory mapping is compatible with that ... other ports.
The memory paging port is compatible with ...Best modern (small) sprites for the Speccy?What are the best game sprites created for the Speccy in the last 15 years? A month ago I released [url="http://www.worldofspectrum.org/forums/dis…
... the best sprite designs from modern Speccy games released since 2000 ... are the best sprites from modern games that I have collected ... interested in sprites from [b]modern games released since 2000[/b ...No contended memory?Sorry if this is a stupid question. But I'm trying to learn more about the ZX Spectrum. If I had a stock 48k Speccy and I could wave a magic wa…
... magic wand to remove the memory contention, what software would break ...Afera, a library for Abersoft ForthI've published a [url=http://programandala.net/en.program.afera.html]library for Abersoft Forth[/url]. It's called Afera. I wrote it some months ago…
... words and tools found in modern Forth systems.
[*] Improved tape ... /> [*] 1 KiB of additional free memory on Spectrum 48K.
[*] 11 ... KiB of additional free memory on Spectrum 128K.
[*] Two ...Modern PSU: picture improvement?I've recently seen advertised some 'replacement power supplies' for Spectrums for which the claim is made that they may make an improvement in pictur…
... '.
They look like generic, modern black power supplies.
I ...z88dk v1.99A Release Candidate[b]Z88DK VERSION 1.99A RELEASE CANDIDATE[/b] Download from: http://nightly.z88dk.org/Releases/ The release candidate will be available for te…
... and compiling for bankswitched memory
* [z80asm] Modern operator syntax introduced
Why no Sinclair if 2 support on modern hardware?Another wonder :) I appreciate that most games support Kemptson joystick so this joystick interface is used in modern hardware (Spectre/DivIDE et…
... joystick interface is used in modern hardware (Spectre/DivIDE etc), but ...Britsoft - Read-Only Memory Publishing"Britsoft" by Read-Only Memory Publishing is their latest book charting the rise and fall of game development in the UK from the early 80s to the end…
"Britsoft" by Read-Only Memory Publishing is their latest book ...48K Memory MapHi, I'm having some trouble understanding the top of the 48K Memory Map. From reading elsewhere I have this as the memory map: 0 to 16383 - …
... the top of the 48K Memory Map.
From ... /> 0 to 16383 - Read Only Memory
16384 to 22527 - Display ... br /> 23755 to 65367 - Available Memory
65368 to 65535 - User ... area '23755 to 65367 - Available Memory'
Also what ...Retroleum Nebula - A Spectrum ULA replacement moduleHey you guys.. Just wanted to mention a new Spectrum doobrie created by myself (Phil Ruston) and Alessandro Dorigatti: Namely, the Nebula - A Spec…
... - A Spectrum 48 ULA replacement module. You can read all about ... /nebula-spectrum-ula-chip-replacement-module/
(Big thanks to ...Non working issue 3BGuys Hope you can help me here (or maybe, someonene from Europe could take a look at it? I've already tried different ULA, CPU, ROM and low RAM (…
... and low RAM (replacement module with static memory). Still the same effect ...
