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Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
... / jumps to address 0x66. The idea is to rewire these jumps to RAM so ... insert JP to our code at
(for example) address FFFD. The ... plan is to write C3 5B 33 instructions to the address FFFD.
to address 5cb2
0x1222 LD HL ... -
PLOTTER - display file utilityI've been disassembling Gyron and needed something to help with working out where things were being put on the screen, so I wrote this program. I was…
... Gyron and needed something to help with working out ... instead (or maybe Plodder due to its sedate pace).
... or which mix display & attribute addresses,
will be ignored ... D = display file address
A = attributes file address
C = ... -
Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…
... routines, which compute the address of every pixel to be displayed:
attribute region, in which a pixel ... a background colour, and an attribute (containing a 4 bit colour ... -
From Bedrooms to Billions - Sept Release![url=http://www.frombedroomstobillions.com/shop/blu-ray][img]http://lifeschool.mikendezign.com/pix/bedban1.png[/img][/url] [url=http://www.frombedroo…
... .co.uk/e/from-bedrooms-to-billions-screening-tickets-12999827835[/url ... ://www.frombedroomstobillions.com/backers[/url] to visit the ?Backers Zone? clicking ... our web site to: read past newsletters, register your address for deliveries ... -
Help for beginner with z80Hi chaps, I'm reasonably new with z80, but had a fair amount of experience with 68000, so decided to give a few things a go. One little thing I'm t…
... is to write a scrolling message using the 8x8 attribute blocks ... char) and offset it from address 15360 (Spectrum font bitmaps).
attribute on or off depending if ... get an attribute block as the result, without having to jump about ... -
(Already mentioned to Lee) - Notification/update emails issue(Already mentioned to Lee)<br><br>Notification/update emails go to spam/never arrive.<br>I changed my email address. The email to confirm the change …
... /> I changed my email address. The email to confirm the change arrived ... .
I have mine configured to not delete spam automatically, so ... was able to retrieve it.
I ... set my profile to notify me or replies. Lee ... -
new Free App To Manage Your Collections!Hi Guys, Firstly, hope this is OK to post. As a collector myself, admittedly not of spectrum particularly (saying that it was the ZX Spectrum when…
... information and automatically adding them to your selected category.
to.
* ... /> * iCloud sync, allowing you to keep track of your collections ... simply by entering an address into the web browser ... -
Anyone have a PO BOX address?No, I don't want to nick yours, am just seeing if it's worth having. Looks as though Royal Mail charge about £250.00 a year for one? Sounds VERY ex…
No, I don't want to nick yours, am just seeing ... to every purchase you make. But... I no longer have an address ... that can be delivered to. :( Sounds as though ... it's the only way to get stuff posted. But I ... -
How to move the location counter backward with GNU binutils?I've converted a 8000-line assembler source from Pasmo to GNU binutils. It was not difficult. It's the first time I use GNU binutils. In my code t…
... compilation) into a memory address, ready to be fetched at run-time ... the macro used `org` to select the address where the value of ... same memory address every time, and finally used `org` to restore the ... can not be used to select the same address every time.
Rom routine for pixel addressDear all, Having my bi-annual 'lets try machine code' project again and have come up with a problem with the pixel address rom routine at 8874. …
... a problem with the pixel address rom routine at 8874.
to do the equivalent of PLOT ... in the byte of the address transferred to HL, but when I ... attempt to LD (HL),A or investigate ...Were there other graphic modes for the ZX Spectrum?I've read that there was a "hi-color" mode that allowed the color clash to be 8x1 instead of 8x8. Maybe I have the name of that mode wrong. I'm…
... that allowed the color clash to be 8x1 instead of 8x8 ... than maybe changing the address of the color attribute table each scanline ... /> Or would the user have to install some graphics expansion somehow ...48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…
... :) ) with a 10K resistor to GND (reference Phil at Retroleum ... ), switch added to pin 27 to do the address bank switching, ... jumper wire from ROM socket pin 28 to ... breadboard, soldered socket pins to appropriate places on the speccy ...Mackarel - one exe to turn .ihx + .scr to a .tapSorry if this feels like spamming so soon after mkloader, but I'm honestly surprised how fast I managed to put this together. Introducking Mackare…
... surprised how fast I managed to put this together.
to give it a start address too), and outputs ... figured that the easiest way to solve the whole mess is ... feed .ihx files directly to a program that will parse, ...Just.SCR - effective tool for reversing Speccy's pictures back to ZX Spectrum[i]'One more cross-platform picture converter to ZX Spectrum .SCR format? Why?' [/i] Don't be hasty in resume. It's simple, but very effective t…
... cross-platform picture converter to ZX Spectrum .SCR format ... reversing Speccy's pictures back to ZX Spectrum.
• Recognizes a flash attribute from animated 2-frame .GIF ... />
• Minimalistic design. Easy to use.
[img]http ...Bizarre ZX Spectrum faults (also possibly relevant to Spectranet compatibility problems).I'm attempting to repair an issue 4A 48K ZX Spectrum and am encountering some very strange problems. For my own records I've given this computer the …
... particularly expect any reader here to to immediately know the cause, but ... A few errant pixels and attribute squares appeared on screen and ... trigger modes and settings to try to find out what happens ... don't know what to try next to discover the cause. ...Faster Manic MinerHey, dudes. I've been fiddling around trying to wring more speed out of this game recently. I've replaced the LDIR buffer copying routines with s…
... been fiddling around trying to wring more speed out ... some faster alternatives in to the spare 3kb or ... at 37708 in the address space and have achieved ... the 512 bytes of the attribute buffer. Ideally, you' ... plenty of unused RAM to stick another enormous unrolled ...Chaos Constructions 2016: Realtime composThe biggest Russian demoparty Chaos Constructions will take place 27-28 august at Saint Petersburg, a big part of which will be dedicated to our belo…
... /> I would like to invite everybody to try and participate in ... tune should be compiled to be used from address #c000, maximum ... relevant to ZX Spectrum - it’s a Realtime 53 Colors Attribute ... Graphics compo. This is the easiest and quicket way to ...Screen address of PRINT position...Hi Folks, The following code uses DF CC system variable to extrac the screen address for a PRINT position. [code]100 CLS 110 PRINT AT 10,16;…
... DF CC system variable to extrac the screen address for a PRINT ... /> I was expecting the bar to appear at the top of ...What has happened to Miles Kinloch?He was a great coder and did a really great work bug fixing the Plus D's G+DOS 2a and BetaDOS. Especially BetaDOS! I was a pen-friend back then and k…
... up with another bug up to the point he fixed them ... if I had the opportunity to write to him again...
address in Edinburgh. But this was ...Z88DK v1.99B ReleasedAt Sourceforge: https://sourceforge.net/projects/z88dk/ It's been a year since the last release so it was time for another. This is another tran…
... assembly language libraries necessary to develop code in either ... org/forum/
Includes link to the nightly builds.
... php
Introduction to Compiling Using the Classic C ... examples
Introduction to Compiling Using the New C ...Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …
... br /> ld a,h ; convert attribute to screen address
rlca
rlca ... ; Save attribute address
ld a, ixh ; 08ts ; Convert to screen address
... ld ix, $0000 ; 14ts ; retrieve attribute address
inc ix ; 10ts ; next ...128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…
... CPU also needs to access an address in this same ... 16K range, either to read ... my in-game code from address $8000.
to address range $c000-$ffff.
to the screen. I understand ...How to automatically find the character set in a gameThis is all completely new to me, so please be patient. I've done some reading up on how character sets are handled by the Spectrum. I understand tha…
This is all completely new to me, so please be ... an address at 23606 and 23607 that points to an ... However the address can be altered to point to the ram.
to use this. In fact ... to 65536, and Commando still points to the classic rom address ...Spectrum 35 - a show to rememberI thought that this venue is already known here, as Lee Fogarty is one of the organizers. Just to be sure, nobody misses it, here is the announcement…
... one of the organizers. Just to be sure, nobody misses ... br />
SPECTRUM35 - A show to remember - Saturday 28th October 2017 ... 2017 at 10 am.
Address: Centre for Computing history, Rene ... Please use our Facebook site to tell us your attendance or ...Competition to the premiere of Spectrum Movie in CambridgeHi there! My name is Andy Remic. I’ve made a 2hr 20m documentary feature film about the Sinclair ZX Spectrum computer entitled Memoirs of a Spectrum…
... willing to offer in competition style – so, simply email your name, address ... and FAVOURITE ZX Spectrum game to andyremic@outlook.com ... winner(s) get an invite to the film premiere!! And there ...An appeal to preserve InfoseekID compatibility!Instead of worrying about competition from other Spectrum sites, Martijn always supported them. He actively worked together with other sites to help …
... is 0004256, therefore the website address for this game at WoS ... titles, assigning new InfoseekIDs to over 2,100 additional items ... preserved in ZXDB too, to ensure full compatibility between them ... close together...
To prevent this kind of problem ...Other than using attributes what other ways to detect collisions, when using char based movement?So I'm slowly working out the bits and pieces to write a game completely in assembly. I've been using attributes when writing in BASIC to detect whet…
... attributes when writing in BASIC to detect whether and object hits ... doing it. I only have to check whether something in front ... or bat has the correct attribute to do something. Any other ways ... ) ; a now holds the required attribute value
[/code]
I ...The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…
... if the I register points to a range of $40–$7f ... . I have been trying to reproduce this effect to no avail. I ... . I’ve tried to relocated the code to the contended memory (as ... (the code is sitting at address 30000):
[code]
Random-Access to Microdrive FileI am working on a BASIC program to backup a microdrive text-file to standard tape array-file. To backup a text-file from one microdrive to a secon…
... provided that we first POKE to address CHA+13 the "previous sector ... OPEN#ed stream number to determine some important address:
[b] ... [b]MAP[/b] is the address of microdrive map
[b ... ]BUF[/b] is the address of the 512 byte buffer ...ZY10, a tool to store and display some small bitmapped imagesZY10 Builder ============ Download at: https://www.sendspace.com/file/rncgbo ZY10 is a file format/tool to store some small images on the Spec…
... a very small assembly program to print the stored
to use to recall the images.
< ... call 49158
256 - to the end - 14 screens of ... *8 pixel data + 16*8 attribute data)
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