-
Bit of fun - one change onlyI also posted this on another marque's forum (for their products) to see. Its just a bit of fun really. OK, if you could of made one change to a S…
... Improving the hardware and removing the memory contention would give back ... 'added around' to remove the contention, if that makes sense ? ... why things like timing critical bits and highspeed loaders like ... the ULA and RAM from sharing the address bus.. Not ... -
More "What could have been"... The Z280.So in chasing up the Loki specs, I happened upon some parallel developments... And had Sinclair gotten to make the Loki, there could have been some i…
... value in maintaining ZX bus and just extending as necessary. ... the video and other peripherals.
Video timing would ... a suspended clock for timing consistency, and then the coprocessor ... at 3.5MHz with bus contention, for full compatibility or ... -
ANNOUNCE: Fuse 0.6.0 and friendsThe Fuse team announce the release of version 0.6.0 of Fuse, along with version 0.6.0 of the Fuse utilities and version 0.1.1 of libspectrum, the Spe…
... than entire lines. Performance improvement, and also allows effects similar to ... (Fredrick Meunier).
* Load and save .scr files, including vbSpec ... and +2A extensions (Fredrick Meunier).
* Add routines to get timing ... -
Norwich Spectrum and SAM Computer Show 2003Hi, My name is Tarquin Mills (Shadowtlx) I never managed to get to the original Gloucester shows because I lived in Aberdeen and was a poor studen…
... be free to all (traders and
visitors), food will ... has an airport, railway,
bus stations (the main one, is ... with two cathedrals, a castle and
cobbled streets.
The ... year at the same time and place.
Please bring extension ... -
Sync-buzzer, interrupts and general confusionBeen wittering on about this in the Misc group, but thought it was best discussed here. Basically been trying to recreate the Sid-Sound effect from A…
... of it, but interrupt-based timing routines are more than my ... /> hope, that helps a bit... and maybe you could show me ... -
ZX-BUS?Hmmmm..... While reading Your posts here, I have an impression that various models of ZX Spectrum have various zx-bus ports. Is that true? I knew t…
Hmmmm..... While reading Your posts here, I have an impression that various models of ZX Spectrum have various zx-bus ports.
Is that true?
I knew that ZX81 and Speccy have different zx-bus ports, but various models of Spectrum too?? -
Memory Map/ContentionHi I'm new to speccy coding (well I did some z80 coding a few years back - like 20yrs ago :) ), and I'd like to get back into writing some scrolling…
... years back - like 20yrs ago :) ), and I'd like to get ... a correct map for memory contention?
Address Size Area ... -
Floating point representationI'm planning on picking up the [url=http://matt.west.co.tt/category/spectrum/openzxrom/]OpenZXRom[/url] project from where I left off a few months ba…
... a few months back, and getting stuck into the calculator ... 32 bits of the number, and one byte (the exponent) ... be represented in the standard floating-point notation with complete ... OpenZXRom is converting integers to floating-point notation immediately on ... -
Dropped me bike. :-( It's windy, and I am superstitous.Well, the high winds helped. But the mister twat head award goes to me, for not noticing the cambre of the road I parked on. Outside a bike shop as …
... br />
Bloody windy today, and rainy.
So windy ... home, but instead took the bus. Then phoned me up, ... out a few times, and sounded odd, for the ... picked up his sign, and chucked it through the ... things come in threes..... and I don't want to ... -
NEW games for you chaps (and girls too) ;-)Okie, did some .TAP versions of NEW original games that were only released on TRDOS disk format. Some of you might have seen some (one or two are eve…
... Filler: (need to adjust multicolor timing to get it playable)
and GREAT no attributes !!!)
[url ... /ZodiacStrip2_128.tap[/url]
And some remixes - these have additional ... -
For residents of Wiltshire and Somerset...I've been wanting to travel there and see some of the historical sites (Avebury, Stonehenge, Glastonbury etc.) for a while now and I'm thinking of do…
... been wanting to travel there and see some of the historical ... etc.) for a while now and I'm thinking of doing ... . What's the nearest airport and how easy is it to ... get to and from there?
2. ... any decent companies that do bus tours of the area?
Printers for Spectrum +2 and +3It seems that the only printers availables for ZX Spectrum were ZX printers and compatibles (connected through the expansion bus), but Spectrum +2 an…
... (connected through the expansion bus), but Spectrum +2 and +3 had centronics ...ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... anyone observed timings of RAS and CAS generated from ULA? ... should set row address on bus.
[*]The RAS line ... /> [/LIST]an normal and drivers are still disabled.
and selects a row. So ... ]8[/B] graphic lines and one graphic lines lasts [ ...The direct bus or indirect one... that is the questionThe Ethernet project continues...and I'm in a quandry. So I've managed to implement enough socket library for the W5100 that socket, bind, listen, a…
... to-rail output swings) and the Speccy bus must be loaded a ... most of the address bus to facilitate bus indirect mode. According ... data in and out of registers or buffers.
Bus direct ... buffer wraps around and do two LDIRs if necessary). Bus direct mode ...Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…
... some questions about the Spectrum and it's emulation;
... memory from different manufacturers, and bought some that had ...
3) How does EmuZWin (and maybe other Speccy emulators?) support ... as they need such precise timing and border control, but what ...And you think your team has got it bad....Quote " A Peruvian second-division football team has suffered what must rate as one of the worst days in the history of the sport, MSN reports. Me…
... when highway robbers "forced the bus driver out of his seat ... state news agency puts it, and the vehicle plunged 600ft down ... a ravine, killing eight people and injuring 22.
Three San ... Cayetano players and two of the club's ...Fuse for Mac OS X 0.10.0 ReleasedA new version of Fuse for Mac OS X has been released at the dedicated sourceforge project and shortly here on WoS: [url]http://sourceforge.net/proje…
... (but probably not perfect) TS2068 contention (Philip Kendall).
[*] Various other ... scanned for metadata in FuseImporter and FuseGenerator.[/list]
... Meunier).
[*] Tweak TS2068 display timing (Fredrick Meunier).
[*] Fix crash ..."Floating" AY registersWhile I was working on some AY sample-related stuff, it occurred to me that with the AY port not being completely decoded, it would be a handy CPU-ti…
... is [i]slightly[/i] interesting, and given how little undocumented behaviour ... written to the data/address bus are ignored, but can be ... 235 to 226 to 224 and so on to 0.
and so there's probably not ...Data bus at interrupt timeIt is "well known" that some peripherals can put values other than 0xff on the data bus at interrupt time, thus meaning that IM2 is slightly more fid…
... than 0xff on the data bus at interrupt time, thus meaning ... slightly more fiddly to use and less useful than it would ...Z80 Expander Bus ControllHello there my fellow forum chummies, I would like to ask a few technical questions, Now I come from an Amiga Hardware based background, and as yo…
... we are spoiled for interfacing and letting the machine do all ... comes to the spectrum hardware. and perhaps that why it intregues ... is this bus regulated?
say I have a DivIDE and Curra ... interfere with the Z80 expansion Bus
[/list]
okay ...Named and Sham.... salutedDear all, Floating around these forums for the last 5 years or so, every now and then, someone mentions a published game they were involved with, or…
... all,
Floating around these forums for the ... or so, every now and then, someone mentions a ... list of forum members and their creations, or would ... the games we all know and love?
... sporadic posters, like me, and forum noobs among us, ...ULA Plus and Interlace.May be a bit late to suggest this, but here goes. Did the original Speccy ULA actually output a proper PAL interlaced image, with timing pulses on a…
... proper PAL interlaced image, with timing pulses on alternate frames to ... upper half-frame?
And if it does generate a ... alter what's on screen and generate hi-res interlaced graphics ...48k Timing Tests...Here's v1 of the timing tests for the 48k Spectrum, with a little background [IMG]http://www.zxspectrum4.net/images/timing_test_v1.jpg[/IMG] [URL="…
Here's v1 of the timing tests for the 48k Spectrum, ... form to submit the results and we can add them to ...politics and retroyou'd think they wouldn't ever clash? spooky they did earlier for me. I went to pick up some speccy games from the other side of london.. and when …
... the other side of london.. and when I got out off ... passed on an open top bus.. that galaway bloke.. spouting about ...VCF report and photosNot sure where to put this, exactly...but here it is, what went on at the Vintage Computing Festival at Bletchley Park last weekend. Finally I've fo…
... here running a very timing sensitive demo. Chris's ... watching Chris explain transistors and capacitors to a very ... small collection of transistors, capacitors and thick film transistors.
... digital clock, built from relays and uniselectors.
...BASin floating point issue...Hi Folks, I have been very happy with BASin and found it to be an excellent tool. However, in the last few days a strange error has started to occu…
... been very happy with BASin and found it to be an ... error has started to occur and I cannot see any reason ... am using BASin 15.8 and from time to time it ... that there has been "Invalid floating point operation". This is not ...BASin floating point issue...Hi Folks, Reposting here as I think I put it in the wrong section before - sorry. I have been very happy with BASin and found it to be an excellent…
... been very happy with BASin and found it to be an ... error has started to occur and I cannot see any reason ... am using BASin 15.8 and from time to time it ... that there has been "Invalid floating point operation". This is not ...Help and Advice with DivIDE PlusHi Guys, Really struggling to get any reliable actiivty with my DivIDE Plus and am looking for some pointers. I am trying to get it to work with on…
... Card socket only and no slave device; and "protect EPROM") and as I ... into the IO Bus, I switch the power on and the Spectrum ... have tried adjusting the IO bus interface connection slightly. Sometimes, it ... into the IO Bus, I switch the power on and the screen ...Broken keyboard due to broken ULARecalling csmith's thread about dead ULAs, a thread appeared in the Zonadepruebas (Spanish) forum regarding... a dead ULA, but only a partially dead …
... Today this Spectrum arrived and I could show that the ... transistor decodes port 254, and if it was not working ... was weakness driving the bus, in other words that ... to put the circuit "floating" on top of whatever ... bus. With the blue cable, the power (5 volts and ...
