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understanding machine codeHi Quick question. Am not really sure if it fits development forum as its not really development per se its more a learners question about developm…
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The eight commands RST $00 to RST $38 have the same effect ... -
Tritone WIP tunesTwo wip's I don't know what to do with. Free to use. https://dl.dropboxusercontent.com/u/9498358/beepola/tritone/super70s.tap https://dl.dropbox…
... need the basic editor, remove rst $38 from int_routine:.
Snapshot ... -
TommyGun's getting a Debuggerhttp://youtu.be/B_kZVRvYV98 I have always wanted to debug the programs I write in TommyGun using TommyGun instead of the debuggers in emulators. …
... this.
I hi-jacked rst 16 (rom print - i never use ... -
ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…
... ] Supports 48k, 128k and Rom games (Z80, SNA, ROM)
[b][color ... /> - Sinclair Spectrum 16k (Only emergency ROM works -> switch on while ... Speccy 128 -> apparently internal rom disable is not available at the ... -
128 ROM paging alternativeWould this work (with the appropriate code in each ROM)? [code] ; 128 rom paging routine ; use rst 28h with call address stored after restart ;;rom…
... code]
; 128 rom paging routine
; use rst 28h with call ... address
di ; disable interrupts for page
out ... address
di ; disable interrupts for page
out ... next instruction after the original rst
; and address
Hardware description - DivIDE interface[B][U]DIVIDE interface / DivIDE 2k11[/U][/B] [B][U]The main description[/U][/B] DIVIDE is IDE interface with own external memory. Thanks to very goo…
... 32kB ram + 8kB rom memory(reflashable eeprom). Eeprom ... ]#8[/B] (rst 8 / errors)
[B]#38[/B] (im 1 ... are used instead 8kB ROM(rom emulation). From adress ... ram 3 contain ROM image for rom emulation). Then only ... bit then is impossible disable this mode (bit D6 ...ROM paging questionAssuming the Spectrum 128 memory map and port addresses, but two custom ROMs in place of the normal Editor and BASIC, what is the most efficient way …
... calling a routine in ROM-1 from ROM-0 so that when ... the routine in ROM-1 executes a RET instruction ... assume routines in ROM-0 will use a RST instruction (it doesn ... address of the routine in ROM-1, which means the paging ...Monitor/debugger that doesn't use the Speccy ROM?Was there ever a Spectrum monitor/debugger released that didn't use the ROM, for key input and character output routines? The reason I ask is that i…
... that didn't use the ROM, for key input and character ... appear to use the standard RST 10 for character output, but ...Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …
... /> di ; disable interrupts
; copy BASIC ROM to RAM
; patch BASIC ROM to prevent overwrites
ld hl,$33fb ; prevent RST 0H being overwritten
ld ...
rst 0h ;
; MicroSource ROM patch (copied to ...Bizarre stuff in Interface 1's shadow ROMAccording to the Complete Shadow ROM disassembly, the function that exits back to the BASIC interpreter after interpreting IF1 commands is this: [co…
According to the Complete Shadow ROM disassembly, the function that exits ... Return address to main ROM is
05CC RST 18,CHKSYNTAX STMT ... />
Now look at the RST 18 routine:
[ ... what's REALLY in the RST 18 routine? The disassembly contains ...Shadow ROM partial decoding not implemented in emulatorsOr at least, not implemented in Spectaculator, and it seems that not in Fuse too. [URL="http://www.speccy.org/foro/viewtopic.php?f=8&t=408&start=53"…
... hardware automatically unpages the shadow ROM. As the RET instruction ... br /> ld (5cedh),hl
rst 8
db 32h ;CALL ... 1 partially decodes the shadow ROM and therefore, the last ...using the ROM's FP calculatorIs it possible to use the ROM's FP calculator to evaluate any FP expression in a single sequence of commands without breaking out to stack some other…
... it possible to use the ROM's FP calculator to evaluate ... />
stack A : stack B : rst $28 : divide : end_calc
stack ... C : stack D : rst $28 : divide : add : end_calc
rst $28 ... end_calc" sequence?Developing apps for ZX Spectrum with SDCCDue to troubles with makebin utility which always starts coversion at memory address 0x0000 and can only produce binaries < 32KB, it can't be used to…
... /> --disable-warning 85 \
--disable-warning 84 \
--disable-warning 112 \
--disable-warning ... \
*.rst *.sym *.lib *.bin *.mem *.lib kernel.s *.rom *.lnk[/CODE ...Fuse for Mac OS X 1.1.1 ReleasedA new version of Fuse for Mac OS X has been released at the dedicated sourceforge project and shortly here on WoS: [url]http://sourceforge.net/proje…
... /> [*] Any changes that enable and disable peripherals may result in a ... Meunier).
[*] Mirror Interface 1 ROM to the second 8Kb of ... paged state of the Beta ROM when loading Pentagon 128k/512k ... Meunier).
[*] Update to v1.38 of the +3e ROMs (thanks ...Rotronics Wafadrive v.1.80 ROM - Corrupt or purposely broken?I've been digging around the Wafadrive v1.80 ROM (from [URL="http://zxspectrum.it.omegahg.com/_RO.htm"]here[/URL]) and can't decide if the ROM is cor…
... around the Wafadrive v1.80 ROM (from [URL="http://zxspectrum.it ... can't decide if the ROM is corrupt, or has been ... -code-error
;
l_0d2b: rst $20
defb $13
ROM images to compare against, so ...z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
... br /> {
/* Disable interrupts to start off with ... put
#asm
rst 56
#endasm
push ix
rst 56
LDIR
; ROM routine, read keys and update ...RST hooks in OpenSE BASICHi, any possibility of OpenSE BASIC having RST vectors rewired to a small table in RAM containing jumps back to apropriate ROM locations? :grin: It i…
... possibility of OpenSE BASIC having RST vectors rewired to a small ... containing jumps back to apropriate ROM locations? :grin: It is an ... vectors that are located in ROM to user mode applications. (hint ... an alternative...is there any ROM left for a small monitor ...ROM Calculator TrigHello, These Christmas holidays I finally have time to devote myself a little to the speccy . I have a question about how the ROM calculator implem…
... a question about how the ROM calculator implements cosine.
... CALL GEN_ENT_1 ;In effect a RST 28H instruction but sets the ... approximation used in spectrum ROM just a simpler procedure.< ... CALL GEN_ENT_1 ;In effect a RST 28H instruction but sets the ...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. …
... problem with the pixel address rom routine at 8874.
Going by the ZXSpectrum Rom Dissassembly book, I'm trying ...
ld (hl),a
rst 16
ret[/code]
RST 16 it comes up blank ...+2 Black Boot Rom Selectionhello, i have a custom ROM with a test RAM software burned in that i have used before to troubleshooting ram problems on my +2 grey, is there a…
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i have a custom ROM with a test RAM software ... that +2 black has 2 rom ICs, is there any technique ... put the 27c256 in and disable the others roms in order ...Currah uSpeech ROM Paging and BootyHi, When I emulated the Currah uSpeech for [url="http://www.inkland.org.uk/inkspector"]InkSpector2[/url], I made it page in its own ROM on memory …
... to enable the uSpeech ROM is this Booty code ... br /> ld a,$11
rst $10
And ... intention is for the RST instruction to call address ... instruction above) the uSpeech ROM is executed. The Z80 ... in the ZX Spectrum ROM which looks like this:< ...
