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Why were there no SN76489-based sound interfaces for the Speccy?I’ve been wondering for a while now why there were no SN76489-based sound interfaces for the Spectrum. Does anyone here have an explanation? There…
... soundchips (and even more the 1-bit DACs), the crappier the better ... -
New Game: The Order of MazesI'm pleased to announce my first full game release since Flynn's Adventure in Bombland 4 years ago. It is called The Order of Mazes and you can downl…
... , found some keys, got 1 bit of the Emblems of ZedX ... but wanted to get level 1 done first.
Lots of ... -
Faulty Issue 1Hi all, thought I'd document my efforts in getting another speccy working. I've never done this before so please bear with me... I recently took a p…
... that compatible with the Issue 1 motherboard?[/quote]
I have ... an issue 1, but it's 16k RAM ... of suppliers of 16 x 1 bit DRAM chips. Some manufacturers use ... -
7mhz CPU?One of the things I like about Spectaculator, is that I can zap the clock speed of the emulated CPU up. Doing so makes me wonder about why the desig…
... dropped the eight 16k by 1 bit (4116 ) DRAM chips and just ... used eight 64k x 1 bit, or later on, 64k x ... 4 bit DRAM chips (from 16 chips ... -
NTSC Compatibility?Correct me if I'm wrong, but wasn't the Timex 2068 the only NTSC clone built of the ZX Spectrum? And I use clone lightly... From what I underst…
... a matrix of 16384 x 1 bit, so you need eight to ... 64k bytes because 65536 x 1 bit DRAM chips are used for ... -
Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …
... is duration of bit "0", W is duration of bit "1", with W ... of them, and 9th bit should be "1". In this case, average ... what if instead of 1 fixed extra bit, we only add the ... byte an add an extra 1 bit. To decode, read 8 ... bits set to 1, read an extra bit and if it ... -
Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …
... ... what if instead of 1 fixed extra bit, we only add the ... byte an add an extra 1 bit. To decode, read 8 bits ... -2 bits set to 1, read an extra bit and if it ... 's 1 invert the previous 8 ... got was using an extra bit every 4 bytes, except when ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... not exactly wrong , are a bit basic to say the least.But ... -
Interface 1 - RS232 question.I am thinking about doing some Spectrum stuff based around the RS232 port used on the Interface 1. Has anyone had any joy doing this with an emulator…
... "]Above, tstih mentions his IF1 bit banging code that works at ... . 30 t-states to send 1 bit. With overhead that's 300 ... per interrupt. That is approx. 1/7 of all processor time ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... not exactly wrong , are a bit basic to say the least.But ... -
2016 Games ListHi, this is the thread I use for the 2016 Games List. Note: Due to forum update policies, the latest version of the list will always be found some…
... ?platform[]=ZX+Spectrum&page=1"]External Link[/url]]
* [b]1-bit music site[/b]
[[url ... -
Opus DiscoveryWould anyone have any materials about programming the Opus Discovery disk? I know it overrides ROM and uses microdrive commands, but I am more into b…
... (a.o holding 'drive select'' bit):
port A .... 12288 #3000 ... 's some tough questions:
1. the track/sector register gives ... PIO registers? For drive select 1 bit would suffice. But there are ... -
Matthew Smith's Andre's Night Off in C&VG - did he really write it?Despite it being written in BASIC, Andre's Night Off is not very good - so what happened exactly? Was the hyperbole surrounding the type-in so much h…
... enough so that (well programmed) BASIC arcade games were possible then ... /> For me though, the 8 bit BASIC I most enjoyed using was ... Locomotive BASIC on the Amstrad CPC. This ... offer the best of BBC BASIC with novel features like interrupt ... -
Bruitalist Architecture and Towerblocks.I don't mind saying I am a fan of brutalist architecture. I love the look of sprawling concrete , particularly some of the cubist concrete mega struc…
... too. Man, that was a bit basic!
[/quote]
Ah ... -
2016 Games ListHi, this is the thread I use for the 2016 Games List. Note: Due to forum update policies, the latest version of the list will always be found some…
... ?platform[]=ZX+Spectrum&page=1"]External Link[/url]]
* [b]1-bit music site[/b]
[[url ... -
Best beeper player with good trade-off between sound quality and CPU timeHi all.. I'm toying with the idea of writing a small demo/intro on the 48k Speccy. Last time I did this I cheated and used an AY add-on but this t…
... ://github.com/utz82/ZX-Spectrum-1-Bit-Routines/tree/master/nanobeep
bit counters instead of 8-bit ones is heavily ... -
Best beeper player with good trade-off between sound quality and CPU timeHi all.. I'm toying with the idea of writing a small demo/intro on the 48k Speccy. Last time I did this I cheated and used an AY add-on but this t…
[quote="utz;852685"]Hi evilpaul, take a look at this code: https://github.com/utz82/ZX-Spectrum-1-Bit-Routines/tree/master/nanobeep
[/quote]
Lots of awesome players there utz. I wish I had the time to put them all in z88dk. -
ZX-Art graphics updatesWe are gathering a large collection of in-game graphics on ZX-Art at the moment. The ultimate purpose would be to make an easily browsable online arc…
... I'll create a "1-bit" dithered version to 1) help me with ... on, 2) have cool mono 1-bit version of my illustration. I ... -
Are turbo loaders worth it?I found turbo loaders fascinating and I've spent quite some time disassembling and trying different types, and they work great when I load the games …
... sounds so "different" is that 1-bit is 50% as long as ... normal loader / fast loader where 1-bit is 100% the length of ... 0-bit, virgin's flash loader exhibited ... implemented standard double length of 1-bit on strange loop..... -
Are turbo loaders worth it?I found turbo loaders fascinating and I've spent quite some time disassembling and trying different types, and they work great when I load the games …
... sounds so "different" is that 1-bit is 50% as long as ... normal loader / fast loader where 1-bit is 100% the length of ... 0-bit, virgin's flash loader exhibited ... implemented standard double length of 1-bit on strange loop.....[/quote]
ZEsarUX emulator - ZX-Uno support & Windows compatibility<p style="margin: 0px; font-size: 12px; font-family: Helvetica;">Hi</p> <p style="margin: 0px; font-size: 12px; font-family: Helvetica; min-height: …
... quite (Z80) CPU intensive, only 1-bit music, not a game, for ...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…
... and Seven Up. I created 1-bit mono portrait and landscape versions ...P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…
... "]hi, you talk about 1 OR 8 bit scroll
what about ... />
I have done 1 bit and 4 bit scrolls, but in this ... , without seeing color clash, 4 bit scroll is out.
bit scroll, left and right.
2016 Games ListHi, this is the thread I use for the 2016 Games List. Note: Due to forum update policies, the latest version of the list will always be found some…
... ?platform[]=ZX+Spectrum&page=1"]External Link[/url]]
* [b]1-bit music site[/b]
[[url ...New Game: Vallation.Okay, this has been hinted at by both Redballoon and me a couple of times, but the damn thing is finally done now. :-D [b][url="http://tardis.dk/w…
Great game, very smooth and playable. Also excellent 1-bit music by Brink, very impressed.
Should play well on the Vega+ :)
