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zx81: is there a 16kb ram limit for basic?first of all, sorry to all about posting a question about zx81 in a forum mostly about zx-spectrum - i didn't want to offtopic questions here anyway,…
... put the machine into FAST mode whilst you're in the ... of it, and you can switch back to SLOW when you ... -
Way of the Exploding Fist vs The FutureFighting Games - 'Back in the Day' I really enjoyed Way of the Exploding Fist as it was a real attempt to simulate a sporting fight. From a quick sca…
... sponge. You could switch between I think Jet mode where he went ... really fast, or nunchuk mode which is self explainatory really ... -
ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... . Esxdos work in USR0 mode but switch to loading from 128 basic ... -
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 …
... /> It runs as an interrupt mode 2 service routine and uses ... /> switch_off:
di ; restore IM1 mode
im 1
ei ... />
enable_im2:
im 2 ; switch it on
ei ; enable ... -
SPECTRUM command and 48 BASICAs we (almost) all know, when a young Rupert Goodwins redesigned the Sinclair/Investronica ZX Spectrum 128 ROM 0 in late 1985, he kept the SPECTRUM c…
... retain your program and switch to 48 mode. However, it fails to ... -
SPECTRUM command and 48 BASICAs we (almost) all know, when a young Rupert Goodwins redesigned the Sinclair/Investronica ZX Spectrum 128 ROM 0 in late 1985, he kept the SPECTRUM c…
... retain your program and switch to 48 mode. However, it fails to ... -
Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…
... MB02+ memory paging (true allram mode or switchable 16kB rom pages ... support multitasking (one OUT instruction switch complette adress space 128kB and ... -
[NEW] Speccy for Android ReleasedHello, All! A while ago, I have released the Android version of [i]Speccy[/i], my ZX Spectrum emulator. It emulates Spectrum 16k, 48k, 128k, +2, +2A…
... menu in portrait mode and try to switch to landscape mode (and vice ... -
[NEW] Speccy for Android ReleasedHello, All! A while ago, I have released the Android version of [i]Speccy[/i], my ZX Spectrum emulator. It emulates Spectrum 16k, 48k, 128k, +2, +2A…
... menu in portrait mode and try to switch to landscape mode (and vice ... -
How to create .TAP that loads into high memory banks?I want to create a program that uses the extended 128k memory, the banks that can be switched into the 0xc000-0xffff area. For the simple stuff I've…
... wait for the ROM to switch it. Don't have to ... 't work in USR 0 mode (which is the standard route ... on the demoscene, and the mode that most DivIDE firmwares force ... , and thus require USR 0 mode and don't work from ... -
How to create .TAP that loads into high memory banks?I want to create a program that uses the extended 128k memory, the banks that can be switched into the 0xc000-0xffff area. For the simple stuff I've…
... the machine is in 128K mode, just after the POKE sentence ... accordingly, doing the switch. If in USR 0 mode, the POKE won ... do the trick. In 128K mode, the OUT will write to ... -
Outrun Europa in colourSwainy suggested that he'd like to try his luck with Outrun Europa colorful graphics and see if they can be improved. Let's give him the chance :) A…
... software tells it to switch to 64-colour mode you'll still ... -
Watch this before booking that holiday to "paradise"[URL]http://www.bbc.co.uk/news/world-asia-18073917[/URL] this really affected me.
... existing lighting by putting a switch mode PSU in every LED bulb ... -
Keyboard issuesI'm getting back into programming in BASIC, but I'm finding using a PC keyboard to emulate 48k or 128k BASIC tiresome due to the mapping of keys, esp…
... been using SPIN in 128k mode, which had a keyboard helper ... into graphic/extended mode while trying, and struggle to switch it off ... -
JSpeccy v0.91A new JSpeccy version has been released. Summary of changes, - The keyboard has been reassigned: Both SHIFTs == Caps Shift Both CTRLs == Symbol Shi…
... suggest checking which mode ULAplus is in and enable/switch off the ... -
VTX 5000 Anything I can dial into?Is there anything currently available that I can dial into with a VTX 5000 modem? Any BBS, etc. With or without one of the tapes available to make …
... s not just the only mode, there is also a ... half duplex mode (that's what the TX/RX switch is ... there was also a software mode to change from TX ... need to support "reverse viewdata mode" (i.e. 75/1200) ... this had the reverse viewdata mode. The phone number was ... -
3rd generation speccy anyone?I notice over the last decade the number of 'let's build a new speccy' threads on various groups and forums has dropped considerably. I have an idea …
... better support for hi-res mode. There isn't really enough ... BASIC. Also means when you switch modes, the contents of what ... -
ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... from BASIC in USR 0 mode because BASIC is in ROM3 ... soon as you make a switch you've paged out BASIC ... -
Need some advice about electronicsI have wired up an ATX power supply to power my spectrums through a DC-DC converter that gives 9V from the +12V rail. It works well. However, I also …
Switching power supplies can be worse than linear regulators. I have a large 0-30V 30A switch mode supply that generates tremendous noise (not an issue for digital stuff, but it's a real pain in the butt for anything analogue that is remotely sensitive). -
Need some advice about electronicsI have wired up an ATX power supply to power my spectrums through a DC-DC converter that gives 9V from the +12V rail. It works well. However, I also …
... a large 0-30V 30A switch mode supply that generates tremendous noise ... -
128K+ Keypad Swapsies.I've been offered a swap, a Spanish 128k keypad, for one of my UK microdrives. Is this a good swap?
... calculator in 128 BASIC
* switch editing modes (48 style/full ... /> * no block delete
* switch editing mode by navigating menus
* tape ... -
48K and wavy lines.It seems all Spectrum related things are breaking here at casa de Don Pedro. After the problem with my old ZX81, I went over to my issue 2 ZX Spectru…
You could always buy a Recom switch mode 7805 replacement from me, then you can get rid of the heatsink etc too ;)
[url]http://www.worldofspectrum.org/forums/showthread.php?t=35239[/url] -
48K and wavy lines.It seems all Spectrum related things are breaking here at casa de Don Pedro. After the problem with my old ZX81, I went over to my issue 2 ZX Spectru…
... could always buy a Recom switch mode 7805 replacement from me, then ... , has a rom mod to switch between Swedish and English roms ... -
64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... that forces itself into 48K mode when I try to load ... just before the OUT to switch screens, and adjust your timing ... -
Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…
... got it to switch from 128k to 48k mode without quitting the ... /> For one thing, if 48k mode has been selected directly from ... to get back to 128k mode, as paging is disabled and ... has to start from 128k mode. It occurs to me this ... -
Car doors, Windows (Microsoft) incompatibilities, and other ponderablesJust some things I've been wondering about recently.. 1) Following the death of Eric Sykes (RIP), I downloaded and re-watched (the very funny) The P…
... as they are '16 bit mode' - why didn't Microsoft make ... split between kernel and user mode, extending that to 64-bit ... . Secondly when in 64-bit 'mode' you can't run 16 ... in order to switch back to a mode that can execute the ... -
64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... 642067]I think this mode has potential, and very ... done in the Timex 512x192 mode, something I also considered, ... someplace to generate the mode and a few fixed ... a back-buffer. The mode has a foreground buffer ... which time a switch is made. The mode is 128 only ... -
Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…
... an assembler listing. The switch routine relies on the error ... OK" report after the switch, which would otherwise quit ... CHR$ 163,"in ";mode;" mode",
2010 INPUT "Switch/Quit ";m$: IF ... +$01) ;signal "48K BASIC" mode
ld hl,($5C4F) ...
