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Interface One - New FunctionalityAs you may (or may not) be aware the Interface One is a pretty powerful piece of kit. One of it's greatest features is being able to easily extended …
... the IF1 programmers did not vector the expression evaluation subroutine, too ... ROM so Dr Ian Logan had to write a work-around shadow ROM ... routine without using a shadow ROM. Just PUSH the address of ... your own routine on to the stack immediately after the ... -
SIF interfaceNew hardware was developed for spectrum. It is dual full UART with HW flowcontrol. In addition module could be populated with ConnectOne module for W…
... in IM2 mode but only using a fixed $ff vector, which suggests to ... me that there is no IM2 logic in ... generation and complete handling of IM2 mode? Having a ctc ... interrupt line would have to be cut to succeeding interfaces (with ... -
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…
... and more.
- move IM2 table out of trdos map ... (actually GASWARE use I=#3D - IM2 table #3D00-#3E00). This adress ... /> RESET+SHIFT - start to USR 0 mode (48 rom with 128kB memory ... +EXTEND MODE - start to 48 mode (48 rom with 48kB memory)
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…
... be possible to monitor the bus and decode instructions like IM2, DI ... , EI, things like I/O writes to the ... It could complete going to the normal ROM interrupt address, or it ... could complete jumping to a ...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…
... bank and doing a comparison to find out what page is ... . You can assume the BASIC ROM is selected and the standard ... a good guess about whether IM2 was selected or not by ...Emulator 'primer'Hi, I see there is an emulator primer from the perspective of [i]using[/i] one but does anyone have a primer for [i]writing[/i] one? I've already s…
... pixels the directx seems to make the image blur ... can the interface1disciple be used to form virtual connection between two ... colour for the different ram/rom banks help programmers?
... onscreen graphics? can 3d vector code storage be located are ...Emulator 'primer'Hi, I see there is an emulator primer from the perspective of [i]using[/i] one but does anyone have a primer for [i]writing[/i] one? I've already s…
... checkerboard pixels the directx seems to make the image blur ... [quote]
is it possible to list mnemonics as consistly as ... colour for the different ram/rom banks help programmers?
< ... of onscreen graphics? can 3d vector code storage be located are ...just thinking about ...compo for zx 16k ? anyone ?
... , i just get idea how to use im2 on 16k model.
to make custom memory map instead ... routine via beeper routine in romjust thinking about ...compo for zx 16k ? anyone ?
We tried to get IM2 working on a 16K for ... no perfect answer about where to point the I register:< ... space in ROM: will only let you jump to 0xffff
ROM that just happens to have a usable ... some misbehaving hardware that writes to the I/O bus ...just thinking about ...compo for zx 16k ? anyone ?
[QUOTE=gasman;408775]We tried to get IM2 working on a 16K for ... no perfect answer about where to point the I register:
ROM that just happens to have a usable ... 'don't plug a toaster to your zx' .
anyway ...ZX81 more powerful than the Speccy?I have been reading ?The ZX Spectrum Book 1982 - 199x? by Andrew Rollings (thanks again, Andrew - it?s a great read!). There are some comments in the…
... "low level access" to mean writing to the software driver, and ... "high level access" to mean writing to the hardware, which was ... routines in the Spectrum ROM that write to the hardware themselves ( ... for their duration, and no vector games, isometric games or ...Question on copying screen bufferHi, Al my prevoius games were copying graphics directly to screen memory starting at 16384. Now I'm experimenting with screen buffer where I could d…
... updating (copying from back buffer to front buffer).
IM2 (257 bytes of interrupt vector table to force screen refresh to call ... byte buffer with screen addresses to update (generated from dirty ... routine has static data to check whether buffer has ...Announcing the 2009 CSSCGCas Digital Prawn has already said, the 2009 compo page went live today, so there's a small overlap between the competitions. obviously you can't subm…
... to see what I mean)
3) No check on good vector ... The use of trigonometry to calculate the length of ... the DRAW-routine from ROM and altering it when ... from the frontwheels (new vector) and the backwheels move ... with the old vector (before steering).
...Midi Out from machine codeI need to send midi-signals by machine code, while Basic is too slow for my current project. I already read I can use hookcode #11E, but I have some …
... the correct ROM before making a call to one of ... make shure that the ROM you started from is ... There is no direct need to disable interrupts, as the ... ROM0 makes a call to the interrupt routine in ... address #0038. The vector at #11E jumps to the routine at ...IM2 Loading on +3EHi there Speccy Guru's, As some of you know, I've spent a while building the ultimate image for +3e, it's currently at 6000+games and demos and i've…
... the +3 DOS rom and it seems to do something with the ... a JP 00056 to the end of the IM2 routine and see ...Booting with a programIf you ever had a VTX-5000, you'll remember it booted to a menu. The menu itself was written in BASIC. When the Spectrum initialized, this BASIC prog…
... don't want the programmer to have to add extra stuff, saving ... re-entering the ROM just after where the call to the editor ... . (The trap itself is just to signal "ROM done initializing", and modules ... its vector table. One of the base modules uses it to display ...Booting with a programIf you ever had a VTX-5000, you'll remember it booted to a menu. The menu itself was written in BASIC. When the Spectrum initialized, this BASIC prog…
... don't want the programmer to have to add extra stuff, saving ... re-entering the ROM just after where the call to the editor ... . (The trap itself is just to signal "ROM done initializing", and modules ... its vector table. One of the base modules uses it to display ...Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…
... really don't want to be playing around with ... carried over by accident to the Spectrum book or ... without the changes to the hardware being fully ... pointing the I register to the RAM will cause ... no location in the ROM that will guarantee a consistent vector.DIVIDE games crashingMy DIVIDE arrived today complete with 512K CF Card, ready to go. First impressions, really good - simple file browser works fine & games load no prob…
... you replace +2B rom chips with ZX128 rom then will possible ... to 128 rom/menu
RESET+SHIFT - start to USR 0 mode (48 rom ... EXTEND MODE - start to 48 mode (48 rom with 48kB memory)
- new IM2 table (+ fixed im2)
- removed logo and ...Help! Reverse engineering a Spectrum game[deleted]
... routines, that is; to control a process that ... />
08 - Number to string converting routines
[B ... /> [B]Text games with vector graphics only[/B]
... need it. There are ROM routines as well[/B]< ... , that is; pixels to display pointer using an ...DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…
... chance of putting one to connect thru the atom ... video 384x256 with tv 90degrees to right rotate
... what benefit is dma for vector 3d stuff? freescape?[/QUOTE]< ... video ula ram contention to contend with mind you ... if it transfers from rom area to ram or for + ...Assembly Programming for IDIOTSOk are there any websites guides for what opcodes do in a z80 or books... but for really really thick people like me :-) Something along the lines …
... memory (RAM), read only memory (ROM), central processing units (CPUs), machine ... the Spectrum due to a programming error in the ROM. You will ... find a working example to set up ... mode 2 'IM2'. It also explains everything you need to know about ...emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... versions wont work without hardware rom interface?
we cant ... no on ehas managed to use push to get 16 pixels onscreen ... /> what benefit is dma for vector 3d stuff? freescape?[/QUOTE]
to maintain... it would be easy to just to have an ...New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... />
The first thing to do is to check the SP and ... stack top without entering the ROM area. Once the stack is ... />
; PART1: Z80 code to initialize snapshot and execute PART2 ... />
intmode db 0EDh,94 ; im2
reg_ix db 0DDh ...Genesis: dawn of a new day, new game from RetroWorks!It's been a long development, but finally we made it. We proudly present the latest game from RetroWorks, Genesis: dawn of a new day. [img]http://ww…
... CPU from data bus 8bit vector value. Pull-up resistors ... external hardware is connect to system bus. K-MOUSE ... chip with mouse ports and IM2 stabiliser. If signals M1 ... then will CPU read vector from data bus and K ... -MOUSE send via resistors to data bus value #FF ...yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... of operating system should fit to 16Kb ROM so that I can ... replace (extend) original speccy ROM. Here are my initial thoughts ... realloc (as in able to first attempt to expand the allocated block ... RAM (i.e. rewiring IM1 vector, etc.)
(if any space ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... and "channels" in Sinclairs ROM does not provide anything like ... See the 'Complete Shadow ROM disassembly', also see the ... CHANS area, putting a vector in there for the stub ... using the MAKE-ROOM ROM call. The stub routine ... for *all* your calls to shadow ROM).
