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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 +…
... atom lite disc conenctor?
r-type smooth scorlling ? pixel sprites ... the code with a full register dump on the PC side ... ...
No wonder I write my own tools but as ... -
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 +…
... ... I have had to write off the original 128K+ as ... page.
I write a lot of time critical ... I prove them. The 'R' register is another area that can ... contents so my PC register dump could return the ... value to take the 'R' register back to the point just ... -
Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... the reply. I set the R register incase BIT 7 is used ... .
I'm gonna write some test code today and ... Bomb Jack. I will re-write the game start-up code ... -
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…
... down. This is because indexed register instructions require a prefix byte ... step through them with "ld r,(hl) ; inc hl"). The ... to do is probably to register no keypress. The way you ... pointer in additional to the write pointer you have implemented. This ... -
Official CSSCGC 2011 Competition ThreadHello fellas. The site is up and running. We are already accepting submissions. [url]http://www.mojontwins.com/csscgc2011/[/url] Rules, info, and e…
[QUOTE=R-Tape;522915]Like these, ... system which emulates the MEMPTR register correctly.
The ... like, "how does the MEMPTR register affect gameplay"?
... behaviour of the "MEMPTR" register affects the game logic. Very ... bit of fun to write. :) -
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…
... instruction copied contents of A register to memory location at address ... about it and where to write the contents of A.
R register after each instruction, but I ... -
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…
... copied contents of A register to memory location at ... it and where to write the contents of A ... I had to increment R register after each instruction, but ... you emulate a ULA port write (beeper and border mostly ... you emulate a printer port write. Etc.
... -
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…
... , so, for example IN r,(C) reads from port 256 ... part of it (so the register that forms the upper half ... them, I should really write to all its aliases as ... but it is recommended to write to port 0xFE. Again, does ... bits). So, when I write to it, I overwrite this ... -
z88dk stdio fopenI'm trying to write a fcntl library, based on the p3.lib one. Looking at fopen(), it calls freopen_z88() which turns the mode string into mode and f…
... writing before carrying out read/write operations and this way I ... I have to use a register. The second is the unix ... filesystem mode flags level is "r|w".
Here's ... -
Low level microdrive programmingSo I'm on my lunch break trying to find out about low level microdrive programming (without using IF1 ROM). I see one can use port 0xe7 to read and w…
... zones are recorded (using the write signal) and what zones are ... />
Basically, exists a shift register and each bit controls a ... on COMMS_DATA and displaces the register using COMMS_CLK. Both signals aren ... set the r/w bit (port 0xef)
c) write to port ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
...
POP AF
LD R, A
JP PE, L_004E ... SPACE this routine refresh all register and original stack and disconnect ... set 48basic in 128menu or write USR 0 in 128 basic ... -
Printing textThis is probably quite a basic question, or there might be something obvious I'm missing. I'm looking for an economical way of printing formatted te…
... adventure, then you should definitely write your own printing routines.[/QUOTE ... current active row in a register or address. This will reduce ... all chr 22,r,c to just 1 chr ... -
ZXDev - powerful environment for development in four languages is ready for testingXDev/ZXDev is open and free set of compilers, additional tools, libraries and design patterns for target platform ZX Spectrum 48K in different progra…
here is the original function in bin2trd.c
[quote]
void set_TRD_name(void)
{
int i,j,k;
char *b=LISTname;
i=strlen(b);
for(j=0;j -
Idk>le me browsing through some game's code >..... [code]61A8 F5 push af 61A9 3EFF ld a,FF 61AB D37F out (7F),a 61AD D33F ou…
... much trouble to save all register state, including IR - well ... quite* clever enough to preserve R properly unfortunately - reminds me ... br /> B8 (623e) = write the saved register block to the remote ... (6246) = read the saved register block from the remote machine ... -
MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…
... probably comes from masking the r register with 0x5. This limites the ... adding 1).
The 'r' register is sensitive to the length ... b,159
ld a, r
and 0x37 ; Avoid ... first LPRINT call seems to write to the screen. I'm ... -
Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... /> I doubt I could write a better print routine lol ... to open (2) into Register A.[/I]
CD0116 ... 3E52 ; LD A,52 "R"
D7 ; RST 10< ... called with the A register holding a valid ... STREAM FF LEADS TO CHANEL 'R'
STREAM 00 LEADS ... -
Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... ;720398]I doubt I could write a better print routine lol ... want to open (2) into Register A.[/I]
CD0116 ; CALL ...
3E52 ; LD A,52 "R"
D7 ; RST 10
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... br /> call sound_2 ; write to data register
ld hl, ... ; work space
defb 'R' ; channel
defw x80_fdel, ... defb 11, 0 ; -1, 'R'
defb 1, 0 ; ... print_a_2:
exx ; alternate register set
push hl ; ...llvm-z80 statusFew months ago I read about efforts to produce llvm back-end for the Z80 (even perhaps as part of new z88dk). Any update on that? I found [URL="htt…
... prototypes i.e. if I write [I](void *)(*malloc)()[/I] ... is L->R order rather than R->L order ... it can use one index register either IX or IY. It ... the next param (L->R order) and the sdcc ... version walks up (R->L). Likewise invoking ...Emulator developmentHi, Could anyone explain or direct to a link that explains in not to technical terms how an emulator is developed. It has always blown my mind eve…
... C, D, E, H, L, R, IM, IX and IY (the ... second set representing the shadow register set.
... and pop them into a register, move PC to somewhere ... operation on a register or value, or write values to the ... screen if there's a write to screen memory (from ...Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... to load it into a register from memory and then perform ... directly without using an extra register. Having said that, and looking ... much faster and smaller 'ld r,(hl) ; inc hl' to grab ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... flash memories do have a Write (WR) signal, which IF2 ... bank, disable ROM, activate write mode, etc... using just address ... LD I,A and LD R,A, associated with (A15, ... know that I and R register are both reset to ... is constantly outputting I and R values on the bus, ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... the I and R register to become ZERO.
The R register is incremented ... />
Read/write ROM addresses with I and R set to ZERO ... followed by a read or write.
There is something ... cycles, and a read or write is 3 clock cycles (not ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... 's a read or a write.
Cartridge slot has a ... those valuable lines (READ and WRITE) are not present unfortunately.
If you try to write to ROM, what happens is ... address, by controlling I and R register.
P.S ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... Sol_HSA;864190"]...
No read/write signal needed.
In ... , we reserve an address for write only, lets assume #03FF ... (could be less) for page register.
But what ... .
- If (I + R) refresh address, match our special ...
