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Low Serial Numbers - Are they worth more?Hi? Probably a bit of an urban mtyh this one - but I am forever hearing people tell me that spectrums with low serial numbers are worth more... How …
... and a Spectrum 128k (Heat-Sync with a rather cool serial ... -
Lerm Tape Utility CHi folks, These Lerm tapes are doing my head in. Through the years I've aquired lots and lots of samples of these, but never been able to make a cl…
... : Pilot Length = 248
Sync 0 = 667 : Sync 1 = 735
Bit ... or not ?
Sometimes the Sync values are changed by the ... -
Various data sheets, any interest?Hi. I have in my possession data sheets (in pdf format) for various integrated circuits, among others those for the AY-3-8910,8912,8913 from General…
... ), and the SED9420 (the Data Separator, also used in the +3 ... -
RGB cableI constructed an RGB cable to my +3 as per schematic on page 14 of this document here: [URL="http://mts.speccy.cz/doc/128_rgb.pdf"]http://mts.speccy.…
... I'm getting only composite sync via the composite in pin ... -
ZX80 and 81 hardware questionsI'm finding a lot of the documentation that is ostensibly about the hardware of the ZX80 and 81 to be primarily about the software. I was hoping some…
... interrupt acknowledge) triggers horizontal sync, with sources diverging on the ... zeroed by the horizontal sync and will autonomously trigger ... IOREQ+READ sets the vertical sync signal as active. IOREQ ... That counter increments on horizontal sync.
The ... -
SP1 library questionsI'm working on my first game. I've not written a game since the late 1980s and that was a text based multiuser dungeon for BBC Micros with econet... …
... clients getting seriously out of sync without having to add (unnecesary ... -
Recommended Android appsOk, here's a new thread regarding your favourite android apps. Please don't include games as their is already an android recommended gaming thread on…
... a Maxthon passport you can sync bookmarks over the internet between ... -
SpecBAS 0.711 Now AvailableA few bugs fixed, a few new functions to make writing stuff easier... Go grab it here: [url]https://sites.google.com/site/pauldunn/SpecOS.zip[/url] …
... |c",2) returns "b". Default separator is "|" but you can specify ... -
Alkatraz protection systemI recently became interested in the Alkatraz protection system, a very widely used tape protection (a infoseek search returns more than one hundred r…
... ROM for the pilot and sync tones and faster (~560t,~1120t ... -
Grey +2 video output and oddities.I've been experimenting with one of the above that I acquired years ago, but had just been buried at the back of a cupboard. I've connected it up to…
... the output of the vertical sync. signal. My monitor claims ... to use just the composite sync. signal, which I have connected ... to its horizontal sync. input. Turning TR5 round means ... the proper vertical sync. signal is now output too ... -
old PC with Monocrome Monitor Out.So as discussed in the Carboot sale thread, I have brought and old Apricot Xi. It takes a monochrome monitor via a 9 pin D connector. Now I don't ha…
... 0v
4 horizontal sync
5 vertical sync
6 frame ... tech manual:
"Both sync signals are at standard positive ... frequency
of the Horizontal Sync pulses to match the standard ... the frequency of the Vertical Sync Pulses, 72 Hz. The
Clocks go Forward UK?All morning I forgot that the clocks should have gone forward. I was wondering why my PC was out of sync with my wall clock. :oops:
All morning I forgot that the clocks should have gone forward. I was wondering why my PC was out of sync with my wall clock. :oops:Would this work for Scart blanking in +3?I was looking at RGB to Scart cable solutions over at CPCWiki. Theres [URL="http://www.cpcwiki.eu/index.php/TV_SCART_cable#Alternative_RGB_Wiring"]o…
... "]one[/URL] that takes the sync signal (pin 4) from Amstrad ... />
In +3, the composite sync is feeding the composite pin ... blanking pin to supply the sync signal one-way and add ...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…
... , write, close, opendir, readdir, seek, sync, fstat, getcwd, chdir, unlink...
Spectrum +3 into a Microvitec CUB 452 MonitorSo nearly had this working! Had a lead made up for me that should have worked but the wiring was a bit off, after a bit of messing around and search…
... and blue, trouble is the sync is off and its scrolling ...Ferguson MA20 via SCART to modern TVHello, I am a newbie here but I visit this forum on regular basis to find interesting informations about computers of my life - Speccies. I have a s…
... />
3) How about "inverted sync" signal mentioned at this page ... this is negative or positive sync ?
If my plasma TV ... ]http://www.twobits.com/RGB/sync.html[/url]
I ...Low level microdrive programmingSo I'm on my lunch break trying to find out about low level microdrive programming (without using IF1 ROM). I see one can use port 0xe7 to read and w…
BIFROST* Advanced Programming - part 1In BIFROST*, it's much easier to just make changes in the tile map and let the engine automatically draw & animate everything in multicolor for you. …
In BIFROST*, it's much easier to just make changes in the tile map and let the engine automatically draw & animate everything in multicolor for you. Even so, sometimes experienced developers may decide to access BIFROST* internal routines directly, for ...BIFROST* Advanced Programming - part 2This second demo shows animated and moving tiles together, and also how to implement collision detection. This knowledge should be enough to implemen…
BIFROST* Advanced Programming - part 3This new demo demonstrates the BIFROST* built-in sprite support that I mentioned before. In BIFROST*, "sprite tiles" are 2 special tiles that BIFROS…
... = -dcolEnemy;
}
// frame sync
asm("halt");
// frame sync
asm("halt");
}
48K+ losing horizontal syncHello! I've got this 48K plus in perfect cosmetic condition and it works well except for when it gets a tad bit warmer the image rolls around. That w…
Hello! I've got this 48K plus in perfect cosmetic condition and it works well except for when it gets a tad bit warmer the image rolls around. That would happen after about 20 minutes after powered on.
Any advice?BIFROST* Advanced Programming - part 4In previous posts I demonstrated how to move multicolor tiles up and down smoothly by a single pixel, and sideways by an entire char (8 pixels). Thi…
BIFROST* Advanced Programming - part 5In my [URL="http://www.worldofspectrum.org/forums/showthread.php?t=40437"]previous post[/URL] I demonstrated how to move multicolor images smoothly i…
Beepola questionshope this is the right place :) Is there a way to make the playing of the exported file wait until a button is pressed. I would like to sync the mus…
... .
I would like to sync the music, so if there ...BIFROST* Advanced Programming - part 6The purpose of this demo is somewhat different from previous ones. Instead of teaching a new technique, the main goal here is to demonstrate how much…
... /> while(1) {
// frame sync
asm("halt");
// frame sync
asm("halt");
Revisiting Spectrum CPU clock regenerationWarning: This post will be a bit nerdy :-) Some time ago, I experimented with phase locked loop circuits as a possible way to regenerate the Spectru…
... you wanted to keep in sync with the video clock, ... ]http://photo.alioth.net/DPLL/sync.png[/img]
sync.
Actually, the ... is back in perfect sync with the 3.5469 ... 're back in perfect sync with the ULA only about ...Velesoft's ZX128+2 with 1.5MB memoryMy old ZX128+2 PROFI (grey model - spanish version) for sale here: [url]http://aukro.cz/super-zx-spectrum-128-2-1-5-mb-i2738723874.html[/url] Back s…
... 9 with boosted signals RGBI,sync,35MHz,GND,+5V (ideal for ...48k faultyHi guys! I have a 48k that, currently, presents 2 problems: 1 - Can?t sync to TV correctly. I get a lot of noise and the characters appear to be inc…
... problems:
1 - Can?t sync to TV correctly. I get ...
