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How to check the whole memory on a +2 greyHi everybody!!! I suspect that i have a bad memory chip on my +2 Grey. Does anybody know if exist any utility to check the whole memory? Thanks a …
Hi everybody!!!
I suspect that i have a bad memory chip on my +2 Grey.
Does anybody know if exist any utility to check the whole memory?
Thanks a lot!!! -
Adding TAP file contents to a Spectrum +3e DOS PartitionHello my fellow WoS'ers, This thread is a companion to a great little guide from a fellow AmiBayer [B]mnjnurney[/B] you can view his thread by [URL…
... [/code]This command clears the memory and sets RAM TOP, this ... type (that means directly to the Video Memory. Now as we ... statement tells the spectrum to jump to the memory location of 28672 and ... it...... a tasty 128k Elite Treat on how to get a simple loader ... -
Converting games to disk: difficult loadersThis thread has an spanish version in foro speccy, but I haven't gathered enough information to overcome my problems. I've been converting some game…
... need some fresh idea about how to crack them.
- [b ... /> - [b]Alkatraz (Ghouls'n'ghosts 128k, The Muncher):[/b] I haven ... writing a pattern into memory, dump the memory after the game has ... load everything at once in 128k), I've loaded everything from ... -
Switch 128k to 48k modeNot sure how to go about this using MC, in 128 basic you can type SPECTRUM to revert to 48 mode (I think), but how would I go about switching modes u…
Not sure how to go about this using MC, in 128 basic you can type SPECTRUM to revert to 48 mode (I think), but how would I go about switching modes using MC?
Thanks in advance! :-) -
Varios +3(e)DOS questions?I'm converting tape games to disk, for being used in my +3e. I'm trying to convert them to standard BASIC loaders, so files could be copied using BAS…
... case (standard +3DOS):
- How many files can I store ... making a +3DOS call, the memory map must be +3DOS ROM ... there any known method to switch from 128k to 48k mode and keep BASIC ... thinking about attacking disk loaders. How did they read the disk ... -
How to load a +3 dos file from disk to memory in z80Hi all again, Are there any example z80 code listings (not BASIC) to load a +3 binary dos file from disk to a specific memory destination? Thanks.
Hi all again,
Are there any example z80 code listings (not BASIC) to load a +3 binary dos file from disk to a specific memory destination?
Thanks. -
Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
... - IM1 routines. :)
--- HOW TO INTERCEPT?
The only ... ; ... loop code sets every memory location to 2.
uploop:
... ROM /after memory check/ and rewire it to this part; ... how to rewire RST 0x08 (since IF1 HW does a page switch ... -
128k programs not working on +2aI'm having an issue with my +2a at the moment, in that I can't seem to get it to run any 128k programs, e.g. Renegade and Nigel Mansell World Champio…
... can't seem to get it to run any 128k programs, e ... It finishes loading then crashes to the Amstrad copyright screen.< ... it down to compatibility issues).
Possible memory fault, ... and if it is any suggestions how to diagnose ... -
So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…
... to poke it into memory:
(NOTE: i've chosen to ... /> 3 FOR a=23763 TO 23774
4 READ ... addr AND USR 23764' to put the addr(ess) ... Since all 128K Spectra uses the RST #28 to call routines ... no need to write any model-specific code to switch mode< ... -
How would I turn memory paging on/off in Assembler?Sorry for the noob question. It's perfectly ok to do OUT 32765,48 in BASIC to turn memory paging off. But how do you do it in assembly language? I kn…
... ,48 in BASIC to turn memory paging off. But how do you do ... -
Saving and restoring data in 128kHi all I'm trying to program a game using compiled ZX Basic for the +2A/+2B/+3. Thanks to a lot of info I found on the forums, I manage to access …
...
I'm trying to program a game using compiled ... 2A/+2B/+3. Thanks to a lot of info I ... the forums, I manage to access all memory banks with this:
... I don't know how to efectively save and retrieve ... all.
How can it be achieved? Thanks ... -
Need some help building a cable for Spectrum 128k +2 to US Commodore 1084S-PHello WoS users! Does anyone have a diagram detailing how to build a cable to go from the Spectrum 128k +2 (grey) to a Commodore 1084S-P (US version…
... detailing how to build a cable to go from the Spectrum 128k +2 (grey) to ... a cable, or instructions on how to make a cable. I have ... purchasing a female SCART to connect to the male output end ... last system is a Sinclair 128k toastrack with the same video ... -
New Utility ZXSTLC[b]New Utility ZX Spectrum Tape (& Disk) Loader Creator[/b] I made this utility to easily create tape and +3 disk loaders for my projects and have…
... with a 128k project which requires all the memory pages to be loaded ... of the 128k memory banks, while using the ROM loading routines to maintain compatibility ... binary SPECTRUM file to load - normally composed
| of memory banks 5, 2 ... -
ZX Spectrum +2B 128K sound distorted and vertical jailbars. How to fix it?Hello, I have a ZX Spectrum +2B 128K (Issue 4 Motherboard) which suffers from sound distortion (the AY music is loud and distorted) and also very fa…
... have a ZX Spectrum +2B 128K (Issue 4 Motherboard) which ... I can do is to replace R203 and R206 ... there anything I can do to eliminate this problem? It ... (which I would like to eliminate) but I also ... issues?
I forgot to mention that I already recapped ... -
My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …
... you please tell me how to make Z80 computer boards as ... and having more switchable RAM banks is definatelty advisable. Although ... near because the extra memory adressing commands use the ... for). You can maintain 128k paging compatabilty by simply addressing ... -
My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …
... to the bottom 32k.
Important Ports
7FFD - 128k ... as you'll have to execute in contended memory to do anything and ... , hence 16k is used to decided how the 48k is written. Once ... with bit 1 of FC08 to switch between the two halves that ... -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... the 128K memory banks but it'd be just as easy to ... write something in BASIC, to be honest... ... 48k rom, i tried to poke and peek some ... broken. How are the physical ICs (IC17-IC32) mapped to banks (0 ... /> Now I'm ready to start changing ICs. I perhaps ... -
128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…
... . If normal interrupt code is to run, then the system variable ... select. ROM 0 is the 128k editor and menu system; ROM ... contains editor scratchpads.
Memory banks 4-7 are contended, i ... example of a typical bank switch on the 128 is:
Wanted: Game Ideas!Ok then here goes nothing. I'm a reasonably good programmer, but I'm really no good at coming up with game ideas and graphics. So if any of you have…
... the 128K is possible using C. Its a big ask to do ... /screen data, etc in other memory banks and copy what is needed ... but again you have to be careful with how many things are ... be stored in the extra banks, copied to the main 64k where ...ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…
... out, and here's how I plan to play it...
< ... />
Memory is based around a possible 256 banks of 16k ... numbered bank (hence, all odd banks are
contended, all ... a Spectrum 128k compatible memory map, while
expanding the system to 4Mbyte ...Faulty 128KI digged out my Spectrum 128, and it wakes not up. I don't have experience, only with 48K. Maybe someone can give me some hint, clue. It looks like m…
... even don't remember exactly how it works. It is ... for 48K or 128K Speccies?
Does 128K starts in 48K ... I'm not in mood to desolder 16 RAM chip without ... It works on 48K or 128K... One of the vertical bars ... from one of the upper 128K memory banks. It'll be black ...ResiDOS v1.92 and +3e ROMs v1.30 releasedI've just updated ResiDOS to v1.92, and the +3e ROMs to v1.30. Full details can be found at: [URL="http://www.worldofspectrum.org/zxplus3e/"]http://…
... RAM for workspace). Other 16K banks are used for extra operating ... />
And if you want to switch between multiple tasks, then the ... tied to a particular memory card and you'd lose the ability to switch ... expensive than a 32K or 128K chip, which wouldn't offer ...Cro S2008Hi everybody!!! I hope this is right thread? :-) I want to share with you my new project. I call it ?S2008?? The idea was to build Spectrum48K clo…
... ?
[*]What memory has you used and how have you configured ... br />
Oh, and welcome to WoS!
:-)[/QUOTE]
< ... I had to switch to 41464? It works, but now we have 128K spectrum ... with 48K used? Maybe there is possibility to ...128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …
... plug of divIDE. Make sure to switch the supplies of Speccy and ... line to divIDE+ e.g.
[list]
[*]how do you switch both ... once I remove divIDE (from memory, they do)
[*]document whether ... be an issue on a 128K machine, it might be on ...Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... is provided, eg, to faciliate memory allocation out of different memory banks.
How to set up a z88dk+sp1 project with optional future 128k music to ... maximize available memory and avoid crashes ...Mass storage - why backup battery?I wasn't sure to post this under "hardware" or "development", but here goes: There are these mass storage devices for ZX Spectrum, and on many desig…
... ROM has nothing to do with how you bank switch with a Spectrum ... is no One True Way to do memory for Spectrum peripherals.
to save state to RAM. For example, the Spectranet saves a 128K ... snapshot in about 2 seconds to a network ...SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…
... not added support for loading memory banks or assigning fonts yet, but ... . TBH, I'm not sure how I would go about adding ... the way that AT works - how would you translate AT coords ... (Text At Graphics) which switch text ouput to using the current graphics ...zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... physical memory banks (don't get confused with the 8 banks the Spectrum 128K ... with the 128K ROM (ROM 0).
So, how can ... we force the machine to boot from the ... the modding performed to the ROM and replace the damaged memory chip.Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... this moment in time to allow access to the 128K memory banks. The Spectrum link ... the Z80 memory map. It is impossible for zx232 to download ... a screenshot and examples of how to use the command line ... will upload the entire Z80 memory map:
zx232 ...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…
... I have added the switch /p to place a small 185 ... the patch if 48K, 128K+ or +2 models are ... allowing some games to work in 128K mode - Sabre ... below 32768 due to the memory remap algorithm using ... as the first three 16K memory banks are contended.
