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Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…
... numbered 0-7 each of 16k size. The "main" 64k bank ... the ROM in the 0-16k area, RAM page 5 in 16k-32k ... run into page 7. The ROM does not check for running ... -
Firefox (new thoughts)Maybe more people would use Firefox if there was a version for the Speccy! [code] 10 PRINT AT 2, 2; "Press F for Firefox or I for M$IE" 20 LET K$=IN…
... to be starting with a 16k Spectrum in the first place ... whole hog and rewrite the ROM incorporating a web browser? Perhaps ... -
Spectrum RAM Paks...This jogged my memory (excuse the pun!!) : [url]http://cgi.ebay.co.uk/CURRAH-32K-RAM-PACK-BOXED-SINCLAIR-ZX-SPECTRUM_W0QQitemZ150057889352QQihZ005QQ…
... ]
Because the Basic ROM lives in a 64k memory ... up and if it finds 16k RAM, it places RAMTOP at ... . No need to rewrite the ROM then. -
TS 2068 and Emulator CartI picked up a TS2068 off Ebay last week and already had a ZX Spectrum Emulator cartridge for it. When I put in the emu cart and switch on, the mess…
... likely as long as the ROM itself isn't buggered. BTW ... cartridge) or an LROS (another ROM which could be another language ... the cartridge into the 0-16k area and if that happens ... to be a spectrum ROM, the computer crashes and reboots ... -
Spectrum RAM Paks...This jogged my memory (excuse the pun!!) : [url]http://cgi.ebay.co.uk/CURRAH-32K-RAM-PACK-BOXED-SINCLAIR-ZX-SPECTRUM_W0QQitemZ150057889352QQihZ005QQ…
... thought that plugging in a 16K Ram pack into a 48K ... software not realizing that the 16K ram pack is in place ... remember reading something about external ROM (such as interface 1, Currah ... line low making the embedded ROM inactive. The same should ( ... -
HELP BTTF on Speccy 48khello, fellow spectrum owners! I have won a Back To the future game on cassette of eBay that is for my 48k. I run it, by typing LOAD "", and it sta…
... Sard]Dont be too downhearted...16k speccys are pretty collectable and ... />
I agree that 16K speccys are collectable. I have ... mention Jetpak (Amazing game for 16K).
Just received an Interface ... and played JetPak on a ROM cartridge which I bought last ... -
Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …
... plug into the Spectrum's ROM socket, such that I can ... Flash ROMs as small as 16K though. However, with some dip ... select a 16K page, you could use a 128Kbyte Flash ROM like ... -
Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …
... Speccy program its own Flash ROM with a little bit of ... RAM, having it copy a 16K block back to Flash. -
Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…
... (48K RAM plus a 64K ROM cart) is just barely enough ... a few early ones had 16K RAM standard, though later most ... /> The TMS99?? owns its own 16K RAM where video information is ... -
Multiface 3 SwitchesHi All I finally got my Multiface 3 today for my +2a. After reading the instructions and lots of odd fiddling with these switches at the top of it i…
That's definitely modified.
It'd be interesting to open it up and see what's been changed. Could be that one of the switches gives an option for 16k RAM (rather than the 8k RAM/8k ROM combination that's usual). -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... you're not using any ROM routines to draw the tiles ... .
[/quote]
No ROM routines at all are used ... plan to page in 0-16k of the dock permanently so ... -
Spectrum Basic InterpreterHello. I started this days a strange project: an interpreter of the Spectrum Basic that can run in a Spectrum. Here is a very preliminar version: […
... 'm only going to use 16K for ROM program). But I look ... -
Spectrum Issue two problemI managed to bring back to life a issue two spectrum (at least the power supply cirquit). The screen is now crystal clear (after replacing all the el…
... ). Faulty RAM will make the ROM memory test (black screen with ... />
You might have a 16k there? That has a significantly ... -
Developing the Spectrum ROMI'm working on some Z80 assembler for a Z80-based single board computer that I'm building. For the things that don't poke my hardware, I'm using a Sp…
... on how the Sam Coup? ROM was written... (from when ... interviewed Dr Andy Wright (the ROM's author) in Sam ... fitted with a Spectrum ROM was able to run ... that I modified to be 16K of paged RAM that could ... replace the Spectrum's ROM. The transition to using ... -
EightyOne 0.43Hmmm, 'twas round about July I fell asleep and only came round t'other day - honest gov! Anyway, I thought I'd better whip out a quick release and p…
... noticed utilities loaded in 8K-16K RAM get corrupted when loading ... rock solid using the ZX81 ROM.[/quote]
I haven ... -
Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …
... can do through calling a ROM routine. That is fine and ... all sprite data into 1 16k page.
2. Put ... into another 16k page. (see:*)
3. Call the rom to ... -
Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …
... is this:
The 16k block with the sprite routines ... just need to call the ROM to get the video hardware ... page(s)
- - Use the ROM to blit the tiles into ... -
Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …
... are already now thinking of 16K pages.
Because, the ... /> It's not individually controlled 16k banks.
This is ... bet...
And for ROM routines, the CALLs will be ... (the lower 16K of the 32K rom) and when that ROM is selected ... -
Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... the paged area (the top 16k), as does the interrupt routine ... ? The examples in the spectrum rom seem to use the register ... me to manually page in ROM 3 and RAM 0, and ... -
ResiDOS v1.92 and +3e ROMs v1.30 releasedI've just updated ResiDOS to v1.92, and the +3e ROMs to v1.30. Full details can be found at: [URL="http://www.worldofspectrum.org/zxplus3e/"]http://…
... RAM of some description (just ROM isn't sufficient since you ... some RAM for workspace). Other 16K banks are used for extra ... -
Best replacement for ZTX650?What is the best replacement transistor for the obsolete ZTX650? I've read that TIP31 will do the trick. Is there a decent equivalent from the BC or …
... is to supply the lower 16K of RAM with three voltages ... ) but since i used its ROM to repair another board, even ... operate it without a working ROM.
Do you have ... -
Monitor/debugger that doesn't use the Speccy ROM?Was there ever a Spectrum monitor/debugger released that didn't use the ROM, for key input and character output routines? The reason I ask is that i…
... that didn't use the ROM, for key input and character ... , which runs in the 0-16K area (it can be forced ... may also not use the ROM routines since they are not ... -
Monitor/debugger that doesn't use the Speccy ROM?Was there ever a Spectrum monitor/debugger released that didn't use the ROM, for key input and character output routines? The reason I ask is that i…
... may also not use the ROM routines since they are not ... use the ROM routines, it still runs in the 0-16K area ... -
Groundbreaking gamesWhich games really broke new ground? I mean the ones that actually got around the hardware limitations of the Spectrum. For example: Aquaplane - f…
... on a 16K machine; the only uncontended memory is the ROM and ... -
Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... 't these addresses in the ROM area? (First 16K). ... a bit confused... -
Zx Spectrum Laptop (again)I've been reading all the old treads about a possible portable speccy. I even found the one about the Speccy Laptop. But it seems there's a lot of ne…
... of a Z80, single flash ROM (up to 512K can be ... ROMs could be stored in 16K pages), single 512K static RAM ... -
Galaksija emulator for ZX Spectrum +3/+2A(black)This is a NEW program/utility/game pack for ZX Spectrum. It is basically an emulator of an ex-Yugoslav computer "Galaksija" which is also Z80 based. …
... page RAM into the bottom 16K:
LD A,$03 ... /> To page the normal BASIC ROM back in:
XOR ... -
Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…
The Spectrum also has 64K - 16K as ROM, which you can't change ... -
Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…
... kilobyte of RAM. When shadow ROM is paged in, between adresses ... , RAM is selected instead of ROM! This memory area is used ... 48K are used! The other 16K are not accessible at all ... -
Retargetting the Z88dkWell, I'm asking here because it's come up before, and I assume someone here might know the answer... I'm trying to retarget the Z88DK for the Z80 b…
... 'd like to build my ROM with the z88dk - essentially make ... the often used functions in ROM so that programs in RAM ... amount of the first 16K page of my ROM as it is ... work if they are in ROM!)
