-
multiple songs with savage enginesorry friends, another thread with my stupid questions. maybe wos should introduce a noob section for people like me? :oops: anyway, how does using …
... variable, which tells Basic interpreter to not touch memory above certain ... lower than lowest address used to load data. With beeper ... SFX and Savage engines use IM2 interrupts, this means they use ... a bit of memory to store interrupt vector. By default it is ... -
This might be something new[img]http://www.711chan.org/test/src/130427925559.png[/img] Have a look at this screenshot of my emulator ZX82. Notice the copyright message? That's…
... cause people didn't stick to the API... when will programmers ... the editor ROM of 128 in 1985 with an address vector table ... -
This might be something new[img]http://www.711chan.org/test/src/130427925559.png[/img] Have a look at this screenshot of my emulator ZX82. Notice the copyright message? That's…
... the editor ROM of 128 in 1985 with an address vector table ... ]
Had they thought to widely document that, it might ... , so you can patch it to extend the system in exciting ... -
This might be something new[img]http://www.711chan.org/test/src/130427925559.png[/img] Have a look at this screenshot of my emulator ZX82. Notice the copyright message? That's…
... =AndyC;536860]Had they thought to widely document that, it might ... , so you can patch it to extend the system in exciting ... guess but I suspect the vector table was a requirement from ... a review of the editor ROM (probably in YS but I ... -
Japan Tsunami AppealAs some of you will be aware, I've been tinkering with an open source version of SE Basic that could be distributed with hardware without infringing …
Just a quick line to say that I've designed ... want to use it to indicate compatibility with the OpenSE BASIC ROM. There ... . Should be easy enough to create a vector version from that if ... -
Japan Tsunami AppealAs some of you will be aware, I've been tinkering with an open source version of SE Basic that could be distributed with hardware without infringing …
... ;539583]Just a quick line to say that I've designed ... want to use it to indicate compatibility with the OpenSE BASIC ROM. There ... . Should be easy enough to create a vector version from that if ... /images/[/url]
... Have to say I like the design ... -
GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... the GUI rom module
3) use spectranet "modulecalls" to access ... the module with the "rom id" equal to the byte in H ... . Execution then jumps to the modulecall vector ... on that rom page and into ... -
Back to BASIC[U][B]Archaeology guide to programs compiled used MCODERII.d[/B][/U] After various people have been talking about "Frank'n'stein" I decided to finis…
... at address 27917 belongs to LINE 15. What does ... the code likes to jump into the ROM at non-standard ... /> ;TEMPS is the standard ROM routine at 3405
LD ... 248
;BEEP is ROM routine at 1016
CALL ... at 53361 puts us into IM2 mode
LD HL, ... -
Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…
... you get this to work if you set IM2 to your own vectored ... routines?[/QUOTE]
Before returning to ... /> JP 56
to read keyboard and let ROM set EI back. -
z88dk hates me =(Hello there my fellow WoS'ers Under the power of darkness I was about to settle in and play with some SP1 sprite handling (as printf is simply NOT f…
... everyone so far has preferred to use sp1_PrintAtInv and roll ... ROM, in particular the ROM interrupt service routine. So you will need to ... disable interrupts or use IM2 mode. I ... instead -- itoa, strcat, etc -- to form text strings. I saw ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... fine to use EI;RET if I'm setting up IM2, ... 48k ROM has a table of $ff bytes to use as IM2 ... few bytes in the ROM are whatever they are ... RETI being used to terminate ISRs while in IM2 mode.
... 't understand they need to stick to documented features of an ... -
line, plot and circle in whole 256x192 displayhi! are there some way to draw lines, or whatever, in the whole 256x192 display, than just the above 256x176 part? (this is the msx1 version i made o…
... br /> are there some way to draw lines, or whatever, in ... made of a kind of vector drawing (converted from postscript or ... assembly, like calling the 16k rom ("bios") routines, are welcome ... other svg drawings automatically converted to run on the spectrum using ... -
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... …
... disabled interrupts (the normal Spectrum ROM interrupt routine was being run ... just guessing that something the ROM interrupt routine does was ... the ROM ISR as, at minimum, the ROM ISR needs IY to point ... if I have my own IM2 routine?[/QUOTE]
... -
Dead Spectrum SocietySo I'm getting back into real Sinclair computers rather than emulators. During the summer months I was lucky enough to buy a working ZX81 and was giv…
... hangs. ULA, Z80 and ROM seemed to be in working order.
ROM code is included in a 16K vector initialization sentence ... itself provides information about how to compile the source code succesfully ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... incorrect register I (need change to #3B). But game code decompression ... game, fix IM2(register I) and convert snapshot to TAP file...< ... br />
48kB games that need original ZX48 rom ... before start install 48rom to DivIDE mapram mode = allram ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... 2As/+3s include a dedicated ROM (ROM 0) which is the ... e. with a patch to run before loading the programs ... ? Or is it enough to type SPECTRUM in +3 ... limited and I would like to know more.[/QUOTE]
... modified 48rom with absent IM2 table vectors in range ... -
Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…
... interrupts
ret ; return to BASIC
org ...
blit: ; subroutine to blit 16 from location in ... 0xfff4
vector:
jp im_main ; jump to main interrupt ... ; combined with first ROM byte forms JR vector[/CODE]
Discuss ... -
How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... won't affect your stack to any sizeable degree, so ... if you're not going to return to BASIC, you can safely ... on the stack down to the start of BASIC ... your own interrupt routine under IM2, or if you disable ... them, and never call any ROM routines, there's nothing ... -
How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... ROM routines after loading..... I use the top of RAM for IM2 ... loader code. This enables me to use every single byte of ... memory, even to the point of having code ... -
How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... ROM routines after loading..... I use the top of RAM for IM2 ... loader code. This enables me to use every single byte of ... memory, even to the point of having code ... a large map that needs to be on a word ... , so I'd have to decide whether 256 bytes are ... -
New Flash Rom Board for +3 and Black +2As per the other thread I've now sold out of these boards. There is however the possibility of getting a new batch made, and at the same time making …
... any way a multiface rom could be loaded into ... at all other than to demultiplex the chip select ... if you installed a ROM with a working NMI handler ... , you'd have to ask a rom expert which roms can ... be patched to have a valid nmi vector ... -
New Flash Rom Board for +3 and Black +2As per the other thread I've now sold out of these boards. There is however the possibility of getting a new batch made, and at the same time making …
... though, you'd have to ask a rom expert which roms can ... be patched to have a valid nmi vector ... NMI when triggered just calls rom address 102 (I think) ... thinking load Multiface rom, trigger NMI (and suitable rom switch) and presumably ... -
Space Harrier Redux...For me, Space Harrier 1 on the Speccy was nice and quick but difficult to play because it could be difficult to see what was going on (also it was a …
... ] - much preferred it to the other 8-bit versions ... that they were shrunk to all the different sizes ... the Amstrad version, using vector outlines for all the objects ... . I'd hate to have to play it running on ... a modern replacement ROM. I don't intend to get too ... -
Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... Speccy. In IM2 Z80 compatible chips are supposed to place a ... byte on the bus to select a vector. Theoretically this allows ... different devices to automatically call ... pretty much pot luck which vector value is being supplied, ... -
Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... put in for it to 'redirect' to?[/QUOTE]
vector table from 65024-65280 (set I=254 in IM2 to ... use it) full of 253s, which in IM2 directs the jump to ... JP nnnn instruction to my real interrupt routine ... PUSH goes to 65534) or to 65535 to avoid over ... -
Multiface 3 trouble saving to diskHey all, I have just got a Multiface 3 with the intention of using it to transfer some of my tapes onto +3 disk. I am totally new to this so pleas…
... a filename, then select copy to Disk.[/QUOTE]
vector into the last byte ... the first byte of ROM is always 243. There ... conflict with the +3 ROM either being left paged ... like something is being written to disk - After you ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... to be at an specific memory address because the interrupt vector ... you make your interrupt vector a tiny bit ... JP NNNN before you get to your routine.
< ... access subroutines and functions to the fixed code block ... I glued in an IM2 routine completely compiled ... -
3D Wireframe/vector animation creator and player?Is there any software that can help record wireframe 3D animations by creating a file that stores just the coordinates and lines? If the answer is "n…
... been playing quite recently with vector drawing. Here you can ... routines. The one in ROM used by DRAW command is ... I suppose the best thing to do an animation would be ... save the points reduced to 2D in it and export ... them to some engine like mine.< ...
