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Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
HALT will only give SP when not DI.
What's wrong with the CALL to ROM?
BTW this is not my trick, but taken from the method to convert memory as Z80 dump from a ZX Spectrum to PC from Gerton Lunter. -
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
[QUOTE=Dr BEEP;683262]What's wrong with the CALL to ROM?[/quote]
Something might have asserted /ROMCS. -
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
[QUOTE=Dr BEEP;683262]HALT will only give SP when not DI.
What's wrong with the CALL to ROM?[/QUOTE]
The CALL to ROM will only give SP (reliably) when DI :) -
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
[QUOTE=Einar Saukas;683269]The CALL to ROM will only give SP (reliably) when DI :)[/QUOTE]
The intrupt might occur AFTER the RET and before the two DEC SP where HALT just had the intrupt and can't get another intrupt for almost 1/50 sec. -
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
... with the CALL to ROM?[/QUOTE]
The ROM might not contain ... you are going to call into the ROM, you need to pick a ... pain so it's best to use Marko's method if ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... /functions in the standard ('48k') ROM bank. So switching happens when ... this ROM bank is active at the ... it would for any access to 'ROM 1'. If you know otherwise ... special handling of ROM 0 by the Spectrum) to implement this, either ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... aware that the 128K handles 'ROM 0' in any special ... manner. That is to say that it will place ... it would for any access to 'ROM 1'. If you know ... added into the decoding to make sure that patching ... see it, why only standard ROM will make the Disciple, ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... it, why only standard ROM will make the Disciple, ... to it than that).
Blocking M1 for ROM ... 0 would be a rather kludgey way to ... peripherals would see access to ROM 0 as actually being ... come across any reference to the 128K doing anything ... -
Rodland in colourAs promised (some time ago already ;) ), here is my hack attempt to add some colour to Rodland : [URL=http://www.image-share.com/ipng-1680-98.html][…
... />
If anybody would like to host on his site my ... and I'd be happy to deliver these files. Unfortunately they ... for .tap, to be honest I don't know how to do tap from ... 128 kB snapshot:) Anybody willing to help? -
Rodland in colourAs promised (some time ago already ;) ), here is my hack attempt to add some colour to Rodland : [URL=http://www.image-share.com/ipng-1680-98.html][…
... =Ralf;687124]As for .tap, to be honest I don't ... know how to do tap from 128 kB snapshot ... :) Anybody willing to help?[/QUOTE]
to load the compressed patch ... then ask the player to insert the original game ... -
Rodland in colourAs promised (some time ago already ;) ), here is my hack attempt to add some colour to Rodland : [URL=http://www.image-share.com/ipng-1680-98.html][…
... for .tap, to be honest I don't know how to do tap from ... 128 kB snapshot:) Anybody willing to help ... shall report any progress directly to you. ;)
[QUOTE= ... ZX7 recently. The idea is to load the compressed patch somewhere ... -
Need HelpFinally got myself a ZX Speccy + but have had an emulator for quite some time now my question is can i transfer games from my emulator onto a CD that…
zx spin also converts tzx and tap to wav
open the tape browser in tools , drag your tzx/tap into the main emulator window then on the Tape browser select File:-save as:
and add .wav to the end of the file name. -
SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
... model). You only have to configure SPECTRA to use that buffer.[/QUOTE ... this by moving their code to ROM (by using a ZXC3 in ... -
Why no 'Avalon' loading screen?I was always disappointed that 'Avalon' & 'Dragontorc' were missing loading screens. I wonder if Steve Turner, when he sees this, could tell us why? …
I want to record it to tape and load it into a real Spectrum. I thought it had to be a tzx? If you can convert a tap to a sound file and record it to tape then that's all I want to do -
Why no 'Avalon' loading screen?I was always disappointed that 'Avalon' & 'Dragontorc' were missing loading screens. I wonder if Steve Turner, when he sees this, could tell us why? …
... ]If you can convert a tap to a sound file and record ... it to tape then that's all ... I want to do[/QUOTE]
Yes ... "authentic" do you want it to be?
More precisely, do ... -
ZX-Assembler in progress...Dear readers, I just want to announce that ZX-Assembler is not longer only an idea in my mind. It's just alive. Unfortunately, it's too early to mak…
... certain range of addresses according to the following categories:
[LIST ... .
[*] BTW calls to ROM routines should be automatically identified ... listing to a text file). Calls to the middle of a ROM routine ... -
More tea, vicar on disk?Hello, can somebody help me putting the 128k version of this game on disk? The 128k version is free available from Jonathans Webseite. However, the g…
I think, you want a Universal Loader. I have not tried it, and I learn how to crack game copy protection, but if it makes a jump (JP) to ROM, not the CALL, so the start address is stored before it in HL register. -
PlusDlite prototype/first batch is here![IMG]http://benophetinternet.nl/hobby/vanmezelf/20130605_143221.jpg[/IMG] [IMG]http://benophetinternet.nl/hobby/vanmezelf/20130605_153930.jpg[/IMG] …
... even one 5+12V supply to feed the ZX Spectrum and ... on the pcb (close to ROM and SRAM) to find out if it ... a PlusD from a frient to check circuit differences (as the ... paging leds on SRAM, ROM and FDC to find out if there ... -
Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…
... br /> Does reusing/calling ROM procedures in general constitute a ... -source alternative ROM - well, my code is likely to get into ... to using a ROM routine in general. Any major update to ROM is likely to ... break both codes, but the use of ROM ... -
Use 28C64B for Opus, not 28C64Just solved a small problem upgrading an Opus Discovery. I was trying to swap the 2.1 rom with a 2.22 version. So programmed an Atmel AT28C64, place…
Just wondering why you don't upgrade to rom ver. 2.31? -
Use 28C64B for Opus, not 28C64Just solved a small problem upgrading an Opus Discovery. I was trying to swap the 2.1 rom with a 2.22 version. So programmed an Atmel AT28C64, place…
... why you don't upgrade to rom ver. 2.31?[/QUOTE]
I do not have that rom file. Do you have it ... -
DivIdeHi, How do I get the firmware as FATware or ESXDOS on the Divide. Can I program the EEPROM (28C64). Which files should I use there. Bye Dietmar
... FATware) and you want to switch over to ESXDOS, you simply ... /[/URL]), then copy ESXIDE.TAP to your CF card and load ... The software will ask you to press a key, but ... Spectrum, bring back to CF card to your PC and copy ... content) SYS and BIN to the card. You also ... -
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…
... a particular method in order to load.[/QUOTE]
ROM of the 48K and + ... ) of the 48K ROM resident in ROM 1, while keeping ... copy of the 48K ROM but resets the machine ... the whole of RAM available to ROM 1 without paging, so ... -
I have done a Spectrum Screen Design Template As PDFI use this for my games, to work out attribute and screen addresses. It is A4, to be printed landscape [url="http://www.peargames.co.uk/downloads/s…
... works from right-to-left within that byte to set a particular ... are into the ordinary / contended / ROM-routines system variable RAM.
to generate these as tables; the ... screen data just gets written to ROM. I suppose I should really ... -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
Writing to ROM is a very simple way to write fast and efficient sprite routines.
At least one of my games use this trick, and you should expect that at least some other games will do it too. -
Tape handling on a +3I'm seeing some strange behaviour when loading a basic program from the Loader option of a +3. I'm currently using the fuse emulator (I don't have an…
... in +3 mode with a TAP to auto-load & run then ... given then it's going to exit at the wrong point ... as it's still defaulting to disk input when it returns ... to the command line, as the ... problem if it's set to auto-load media and a ... -
Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…
... memory mapped address in the ROM area, but which is out ... writes by the Sinclair BASIC ROM.
For those that ... not aware, the ROM code writes to ROM addresses 0000h to 0004h, plus I ... -
IF EXIST?In MS-DOS scripting, there is an IF EXIST command that lets you check wether a file exists in disk or not. There are any way to check it out from BA…
... routine permits the directory to be catalogued in a ... left), i.e. the ROM
switched in at ... ...3FFFh) is ROM 3 (the 48 BASIC ROM). The RAM page ... command has been used to reduce it to somewhere below
ROM 2 (the DOS ROM) switched in at ... -
LOAD "" CODE - Blind Alleycame across [B]Blind Alley[/B] in the archives, and both tzx/tap versions only have Bytes header, no Basic loader with autostart - please, anyone, ho…
... game. It is old enough to procede the de facto standard ... this will have been returning to ROM code, and the BASIC interpreter ...
[/code]
Clues to it's location can be ...
[/code]
which translates to:
[code]
SAVE "BA ... -
LOAD "" CODE - Blind Alleycame across [B]Blind Alley[/B] in the archives, and both tzx/tap versions only have Bytes header, no Basic loader with autostart - please, anyone, ho…
... this will have been returning to ROM code, and the BASIC ... br /> [/code]
which translates to:
[code]
SAVE " ... " stopping the basic loader to reveal the randomize usr and ... this as simple as possible to a complete programming stupido... ...
