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Trying to create NMI, whats this switch?Hi, I have been reading a book Z80 Applications, and I am trying to create a simple device for creating a NMI. Here is a schematic: [url]http://www…
... slight bounce between on and off which would cause ... there would not be the resistor already in place.< ... But I've got the bits now and I want to make ... need to power this (using the + and Gnd), or is it ... I just wondered whether the power was just for some ... -
A question about HTML.Why did the W3C depreciate the align attribute of the <DIV> tag. What replaces it? Is alighnment purely at CSS level now. Scottie_UK.
[QUOTE=Scottie_uk;225367]@ import URL([url]http://www.someplace.com/style1.css[/url])
[/QUOTE]
No space between the @ and the import.
(I have 'url' in lower case too, but that probably doesn't matter) -
How does the Z80 work internaly?How does the Z80 work internaly, i.e. how does it actually execute a machine code instruction? When it fetches a byte from the memory and finds, for…
For an explanation of how the AND gates and XOR gates are fabricated see Computer Chronicles from 1984
[url]http://video.google.com/videoplay?docid=-1379784389015709438[/url] -
Channel redirectionHi! I need help regarding the following problem. I want a BASIC decoder running on Spectrum, written in assembler. I found the great *LIST routine […
... written in assembler. I found the great *LIST routine [0] ... prints the listing on the channel 2, the screen. However, I need the ... 2
in the *LIST code and replacing it with
RET ; Return
The AND A may be SCF, I ... -
Minigame Compo 2007Hi there, also this year, there'll be a minigame competition, open to all 8-bit computers and consoles. It consists on writing games whose size (…
... USE Jump forward if the required
AND A line was ... line after' is not after the
AND +C0 actual 'end of ... we want to jump to. The AND +C0 essentially doesn't allow ... -
Commercial life of the 16 bits?Just sat here, browsing the archive looking at the game adverts. The Spectrum went North commercially around 1993, and the C64 managed to hold on (al…
Well lets remember here the and Amiga 500 came out in 1987 (and the Atari ST earlier) not 1993...so its run to around 1997-2000 was a pretty good run and about the same length as the speccy/c64. -
Commercial life of the 16 bits?Just sat here, browsing the archive looking at the game adverts. The Spectrum went North commercially around 1993, and the C64 managed to hold on (al…
... remember here the and Amiga 500 came out in 1987 (and the Atari ST ... pretty good run and about the same length as the speccy/c64.[/QUOTE ... ]
Didn't the Amiga 500 come out in ... me that on a forum, and if it's true that ... -
Emulator accuracy test?When I first created my emulator it worked fine. But then I found one or two games that had odd quirks. Eventually I found the flag or command that w…
... that was implemented wrongly and the problem was fixed. The last error I ... every combination of the AND instruction and check that all the flags and results are ... real spectrum (because the tests have been relocated), and therefore a correct ... -
Spectrum Analog interfaceHello Spectrum addicts, Feels good to join you :) I'm trying to build an analog joystick interface for our beloved machine. I've set up a page here:…
... BEEP, but just look at the AND gate as an "inversed" OR ... /> as soon as one of the inputs goes low, output goes ... example to a 10-input AND gate.
Winston,
the output had to be inverted and second because ... -
Replacement loudspeaker for rubber key 48kI'm fixing one of my rubber key 48k. Just ordered a membrane for it but I also need to find a replacement loudspeaker for it. The original some how q…
... the replacement speaker there is a 'coated'/sleeved white wire and also ... guessing that the white wire is the + and the bare wire is the 0V line ... to its impedance. And this makes sense - the inductance value to have ... -
PSU polarityHi! I have a speccy+ psu and somewhere there is a loose connection.I suspect the end to the speccy side. I need to cut the wire and put a new socket.…
Ι am afraid not.
I want to know which of the two cables is the + and which is the -
One is black coated and the other is black/red coated -
BBC schools educational gamesHola, Right. Seeing the action shot of Journey's End fired some long-forgotten synapse and I'm not sure if it was in this game, but it reminded me of…
On a slightly related note, who remembers ZigZag, Badger Girl and Dark Towers? :D -
What's your fav Batman movie?I just saw Dark Knight and came away being very impressed indeed! So then, which of the batman movie do you think is the best?
mask of the phantasm :)
the first "dark" animated one
not sure ive ever seen the later "film" ones all the way through tho tbh -
New Functions for Sinclair BasicA total of 52 new functions can be added to Sinclair BASIC; 26 numeric functions (A-Z) and 26 string functions (A$-Z$). Owing to the internal structu…
... r(x,y)=(USR 7766 AND 11)+INT (RND*(y+1 ... )+x)
[/code]
the AND 11 is there simply to ... replace the computed value of USR 7766 ... -
Skool Daze disassemblyWhile developing [url="http://pyskool.wordpress.com/"]Pyskool[/url], I've also been putting together a disassembly of Skool Daze and Back to Skool, m…
... ;317829]How large is the play area, and how many sprites are ... all those tricks, except for the attributes in nibbles one.
the AND mask or store it? (I ... /> On the other hand, I am using a back buffer and have ... -
Skool Daze disassemblyWhile developing [url="http://pyskool.wordpress.com/"]Pyskool[/url], I've also been putting together a disassembly of Skool Daze and Back to Skool, m…
... Jmk;318064]Does it calculate the AND mask or store it?[/QUOTE ... /> Both Skool Daze and Back to Skool store the masks. (Is it ... 5376 bytes for skool map and attributes (pages 160-180: one ... overhead)
The proportional font used in the Skool games wastes ... -
i am currently listening to........as i couldnt seem to find the old one, i didnt look that hard :P ive started a new one right after somebody asked me for some slayer ive rediscovere…
dead confederate - wrecking ball
southern rock (heavy, mellow, hard and dark) -
(not quite as) Nice PhoneMy dad brought me a phone home from his latest work trip to the Caribbean, so I am now the proud owner of one of these: [URL]http://alistairsserver.n…
... />
True, but how are the * and # generated?
[QUOTE]I ... 1st year uni project, hence the phone [/QUOTE]
Yes ... -
(not quite as) Nice PhoneMy dad brought me a phone home from his latest work trip to the Caribbean, so I am now the proud owner of one of these: [URL]http://alistairsserver.n…
[QUOTE=Spex;324811]True, but how are the * and # generated?
[/QUOTE]
Tapping the hook with a certain cadence. I didn't say it would be user friendly :-) -
Using INPUT without clearing last two lines of screen?I'm trying to print to the 22nd row of the screen using the ol' print #0 trick. Unfortunately, I require user INPUT which seems to wipe out the botto…
... 0 it stops jumping back and the code continues.
... a byte that is zero, the AND A instruction will result in ... this routine. (AND A does a bitwise AND of the A register with ... itself, and that will mean the result ... -
Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…
... I didn't really grasp the AND D (masking what?), OR ... And another thing worth noting is that the values stored on the stack ... causes the PC to point to the DEC SP following the call and ... execution begins from there? At the end ... -
Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…
... to an address in the screen buffer, what does ... DE point to - the sprite to be rendered? In ... I didn't really grasp the AND D (masking what?), OR ...
You interlace mask and sprite bytes in your graphic ... , and SP points to that graphic data. With the POP ... -
Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…
... =Metalbrain;328496]You interlace mask and sprite bytes in your graphic ... , and SP points to that graphic data. With the POP DE ... on sprite masking and so was puzzled by the AND D operation. I ... can see how the POP logic ... -
Keyboard Input$/scan problemHi, I'm finally fulfilling my promise to get a reasonable understanding of the Speccy and embarking upon attempting a few simple routines in Assembl…
... case as you stated).
The AND 7 will basically "throw away ... two of the keys so only the K, L and ENTER keys ... (in combination) will produce the 8 ... , before doing the [B]AND 7[/B], mask off the five keys with ... -
All that jazz (stuff) - haters keep outI've started a bit about jazz lately so thought i'd start a thread to keep it all in :P so, do you like jazz? what sort of jazz? do you like ragtime,…
im just listening to morphine........i forgot about them, theres a jazz undercurrent to some of thier songs, specially the song "you look like rain"
they also sound like a mix between stuff like The The and Tom waits -
Simple text compressionI just checked one idea about text compression. Do not take it as recomendation but rather as info which can you save some time when you are solving …
[QUOTE=The President;350650]Uh...It ... /> [code] THAT WITH THIS WELL THE AND FOR WAS YOU BUT OF ... space at the end (e.g. THAT{space} )
and it ... 68% (- 6.66)
CIA The World Factbook 1992 61.20 ... much better on some files and a bit better on ... -
Simple text compressionI just checked one idea about text compression. Do not take it as recomendation but rather as info which can you save some time when you are solving …
... /> [code] THAT WITH THIS WELL THE AND FOR WAS YOU BUT OF ... e as one byte, and save the escaped word-bytes for longer ... , THEY, NOT, THEM, WITH and rund the Bible through it (provided that ... in English, and "n th" might encode "in the", "on the", "when the", "been ... -
new system for DivIDE[url]http://velesoft.speccy.cz/zx/divide/divide-bs-dos.htm[/url] It's modified BS-DOS 308 from MB02+ interface. More utilities, convertors and .MBD …
... , he's putting socks on the wrong appendages :-)
In ... many of the complaints are of the "and I'd like the moon on ... a constructive bug report in the case of a fault. Or ...
