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Help Please: ZX Spectrum Book, Hardback Edition.I know there were a few typos in the ZX Spectrum book that slipped through the net (which is unforgivable seeing how long it took me!) I'm trying to…
... I'll be there in the Summer....[/QUOTE]
Well, I ... drink then? and show you the ZX book if you haven ... popular holiday destination in the Atlantic, a bit north of the Canary Islands. My ... ?s nice some people know of rock somewhere in the Atlantic!!!:p -
Questions about registers, stack, etc.I was told that if I wanted to export code and create unprotected versions of games I should do the following: 1-Find the starting address by using …
... =Arial][SIZE=2]CALL #556 ; the code loader[/SIZE][/FONT]
[/code]
The R-register is NOT set.
Most ... -
Assembler snippetsI was just thinking that a thread for small but useful assembler snippets to do useful things would be cool for people learning z80 coding. Not to me…
... perform a 16-bit addition of the accumulator to any of the 16-bit pairs (DE ... of the other 16-bit pairs. It automagically handles overflow of the low-byte into the ... high-byte of your chosen 16-bit pair ... -
plus3e simple ide interface problemhi, I prepared a 8bit simple ide interface 3 days ago, but I got problems (with or without ide cable connected). 1.First of all, I have to press re…
... , between Pin 14 and Pin 7 of the 74LS10
Always good to ... do this whatever the situation.
[/QUOTE]
the problem(s). But you were ... time.
So, at the end, I'll try to ... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... the bottom 8 bits of the address bus and the contents of the A register goes on the ... top 8 bits during the port ... read. Port $FE selects the keyboard and the top 8 bits select ... read. Since A=0, the top 8 bits is 0 ... -
The amazing Miles Mad Mission thread!Following on from the "Thuderstorms" thread! The JSW I mocked up for a laugh then decided to actually do is under construction. As promised I said …
... so on over the last week or so. 7 of the mapped out ... 6 screens at the back of the manor, 36 in the house itself, ... and nothing out the front yet. The ... and vitriolic stabbing at factions of the retro scene all none speccy ... -
The amazing Miles Mad Mission thread!Following on from the "Thuderstorms" thread! The JSW I mocked up for a laugh then decided to actually do is under construction. As promised I said …
... so on over the last week or so. 7 of the mapped out ... 6 screens at the back of the manor, 36 in the house itself, ... and nothing out the front yet. The ... and vitriolic stabbing at factions of the retro scene all none speccy ... -
Reading from the keyboard using the IN commandHi all, I'm working my way through Sixty Programs for the Sinclair ZX Spectrum, and I'm running into difficulties with some of the keyboard reading r…
The port addresses are the same for all issues, but ... on early issues bit 6 of the result was always reset, which ... wasn't the case for later ... -
Your views on...The Snowman[url=http://www.worldofspectrum.org/infoseekid.cgi?id=0004609]The Snowman[/url] Another game I haven't played. Was it any good? It looks basic, but …
... raved about at the time (I was pretty proud of it.)
Dave Perry (yes, THE Dave Perry ... /> I'm currently on the fringes of games development now, writing on ... stuff, I got a bit sick of the way the games industry was heading ... -
wavide: WAV player for DivIDEPrompted by an email from zxbruno yesterday, cobbled together much quicker than expected... [url]ftp://ftp.untergrund.net/users/gasman/zx/wavide/[/u…
... mixing to improve on the 4-bit output of the AY - see [url=http ... 's work on the MSX[/url] for the state of the art. But getting ... that to work with the DivIDE ... 's a lot of other, more fundamental stuff in the Spectrum IDE ... -
classics games youve never played.Video games history is littered with many classic games we may argue over which ones are true classics and which ones arent but im interested in conf…
... Saturn, and a couple of 16 bit consoles at the time. I only ... 32 bit console the Saturn version of Doom was on par with the SNES ... had the same washed out pallette as the 16 bit version, and the same ... was good for a 16 bit version of the ultimate FPS. -
TS1000 (ZX81) problemHi, I have a real weird problem, hope somebody can help. I have repaired the keyboard as some of the keys didn't work, the normal membrane problem.…
... connections with the one with 8 connections (KB2). First of all ... there seems to be a difference with the ZX ... important conclusion is that Connection "7" of the KB2 connector with 8 connections ... KB2 pin 7, but what is the pin number on the ULA. I ... -
Q. on a recently submitted JSW map.The [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/games-maps/j/JetSetWilly_8.png"]JSW map[/URL] recently submitted to WoS pops up weird over here …
... /> The Alpha channel of the image contains the display file of the images (ie
the bitmap ... passage rooms).
Reducing the bit depth of the display file image to a ... single bit will give
you ... -
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... of time (in the case of the paging register for the ... Spectranet, I estimate at least thousands of ... T-states) when the ... at that part of the circuit and ... -
I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…
... />
i getting a bit bored of the radio now, in future games ... about the GTA games, i can see them doing loads of great ... stuff in the future. they seemed ... again, but instead of living in the towns, scav off the waste, carry ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... it kicks image quality to the stars.
but ...
of the mode (it's harder than ... believe you can read the contents of the new register, so you could write ... to see if it's the same -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... believe you can read the contents of the new register, so you could write ... to see if it's the same[/QUOTE]
yup ... words on subject from designers of new ula. -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... -standard approach to decoding the port (instead of IORQL + port number + ... faulty M1 lines, since the interrupt acknowledge will look like ... do a full 16 bit decode of the ports being used, rather ... I may have missed some of the conversation in irc that already ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... br />
It was the only one available -- everything else ... . :)
[quote]Presumably, the plan for real hardware would ... do a full 16 bit decode of the ports being used, rather ... />
In the Harlequin full decoding. In the replacement ULA only ... -
When would you use LD A,R ?Can anyone tell me a practical use of LD A,R and LD R,A I am confused when you would need to use it? Cheers
Fast flag using bit 7 (that doesn't change with the auto-increment). Frobush uses it in his sound routines, modifying bit 7 in the interrupt routine, and checking that bit every little while in his sound routines so the game continues after the interrupt. -
I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…
... run down a dark grassy bit (one of the chuckers is in here ... . There's one of those blade traps in the middle of the street, but ... it flies off. Great to use with the ... ) you'll be fine for the rest of the game.
[quote ... -
Black screen on a Spectrum?I'm looking at a Spectrum+ on eBay right now and the guy says when he plugs it in and turns it on, the screen is black. He says it's because a casset…
... were supposidly working.. but the good bit, out of the ?30 charged, 1 refunded ... me ?25 of it to get ... easily a ?5's worth of things with it, knightlore, currah ... -
Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…
... rather complex properties. Usually one of the lesser perfect properties is needed ... used to reduce the (unwanted) effect of capacitance 'inside' the type of crystal used ... nF) between pins 14 and 7 of the 74(xx)04 for creating ... -
Randomize usrHi, I've often wondered why/how they came up with RANDOMIZE USR <memory address> to invoke machine code couldn't they have used a better keyword (e…
... the return value is useful (the contents of the BC register pair forms the ... integer return value)
Invoking the ... [/b] will affect the screen which is usually ... do loads of CPU work with the return value.< ... -
Jonathan Cauldwell games megathreadi cant remember for the life of me if we had any johnny cauldwell game threads so thought id start one lol im just going through his downloads for a…
... House Yesterday, had it from the pre denienced days I think ... though, it's another one of those mag cover games, that ... />
Obviously I am a bit out of the loop!.
(sorry for ... -
Jonathan Cauldwell games megathreadi cant remember for the life of me if we had any johnny cauldwell game threads so thought id start one lol im just going through his downloads for a…
... />
Obviously I am a bit out of the loop!.
(sorry for ... the off-topic post)[/QUOTE]
... -
Anyone else have a fanboy problem?Over the past 18 months or so, there's been one individual (don't worry, I don't think he posts here, he has a very *ahem* "distinctive" writing styl…
... few filters to block the email addresses he uses?[/ ...
I am a bit tired of the people who try to aid ... just killing nerves of the other. How much of a problem it ... is? Andrew, don?t you see the ... a businessman I also check the SPAM folder, so at ... -
Skooldaze TooDear WoSsers, Thanks to Skoolkid's disassembly I'm attempting to write a new "improved" version called [B]Skooldaze Too[/B]. As part of the improvem…
... Skooldaze was released in the earlier part of the Spectrum's life I ... use it. At the very least the school get the decorators in and ... .
A lot of emulators support the Microspeech so it made ... -hog we'd use the 8-bit DAC of the Specdrum and RAM Music ... -
Skooldaze TooDear WoSsers, Thanks to Skoolkid's disassembly I'm attempting to write a new "improved" version called [B]Skooldaze Too[/B]. As part of the improvem…
... -hog we'd use the 8-bit DAC of the Specdrum and RAM Music ... -
RGB values for ZX Spectrum colours???Hi all, have someone of you a 100% RGB representation of 16 ZX Spectrum colours? Please, post here their values. I was trying to determine the colo…
... BIT?
Thanks
Hood[/QUOTE]
when the ... is just an 8 bit approximation of the signal level that ... is produced by the circuitry generating the ... is different (due to the low tolerance components used etc ...
