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Classics ported or cloned on good ol' SpeccyHi, Spectrumists! I'm a fan of classic arcade games and I would like to know from you what do you think about ports or clones of such games on the S…
... 'm currently using +3 special paging mode 0/1/2/3 for the emulation ... page 3. During interrupt processing I switch back to normal 128K paging ... only need the normal 128K paging setup. But I think the ... -
Classics ported or cloned on good ol' SpeccyHi, Spectrumists! I'm a fan of classic arcade games and I would like to know from you what do you think about ports or clones of such games on the S…
... 'm currently using +3 special paging mode 0/1/2/3 for the emulation ... is impossible on +3 (DIVIDE is unusable with +3 allram mode - collide ... only need the normal 128K paging setup. But I think the ... adress space (8192-16383)
3) true allram mode 16kB (two ... -
Spectrom interface ?Hi all, I got 2 of this devices ... :) [img]http://forest.no-ip.org/wos/spectrom/20151006_151428.jpg[/img] [img]http://forest.no-ip.org/wos/sp…
... only ran on the +2A/+3? (Yup, I know it won ... . It also uses the +2A/+3 "special paging" mode, and hardware double buffering ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... quote="Hikaru;921387"]Re extended paging, something like an extra key ... basic support for the +2A/+3 special paging modes, as well as some ... ways, it tests the paging modes by switching to the ... />
I've excluded the special mode 011 from testing because ... -
Chibi Akumas - Spectrum Port Planned!I'm planning to port my CPC game, Chibi Akumas to the ZX Spectrum! I will be targeting the 128k disk based systems - as this will be the best (and mo…
Does Pentagon have the +3 "special paging mode" too? -
New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…
... be easily loaded on a +3. The custom loader is ... 3DOS ROM routines and RAM paging to load the snapshot ... found that swapping the +3 48k ROM with the original ... utility to use the +3 special mode which allows you to ... to get working on a +3, even via loading from ... -
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 …
... of the self-test code from the +3 that runs from ... the test screen after pressing ... for ROMs 2&3 and the "special" paging configurations removed; so ... ; Spectrum +2 (not +2A!) RAM test
; assemble & run at ... -
128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…
... give 167 for +2A/+3 or 255 for the others ... 3 gate array the easiest way is probably to probe the paging ... to see if it has special paging mode. That ... s interrupt service routine to test the contention, a more ... running on a +2A/+3 as above. It's ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... 3 of @Your Spec-chum's screenshots above where the memory test ... is active concern the special paging mode 5. It ... the time of the test if the normal paging mode 4 is ... just the memory test next time. No changing the paging mode with ... -
Detecting +3 / +2AWhat's a simple but reliable way to detect if code is running on a +2A/+3? My first though was to try switching to ROM2 and then checking for the …
... /> First test finds out if it has any 128k paging and if ... a 48k, then it uses special paging mode to distinguish between the ... Black +2/+3.
As colonel32 says, test the features you ... t be an issue probing special paging mode unless they're memory ... -
Port 0x7ffd Partial DecodingI'm trying Pitfighter on my emulator and it runs in +2A/+3 mode but crashes in 128k/+2 mode. I traced it down to an OUT instruction which sends 4 to …
... and it runs in +2A/+3 mode but crashes in 128k ... in +2A/+3 mode 1FFD is reserved for special paging functions.
3 sets the ROM high byte ... this happens. Has a +2A/+3 check occured that I haven ... -
Quick test (2)Could I ask any 128 / +2 / +2A / +3 owners to test the new version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]fusetest[/url] on thei…
... any 128 / +2 / +2A / +3 owners to test the new version of ... 128K / +2 and the +2A / +3.
Cheers. -
New project: CargandoLeches. Ultraloads with ROMHi This project has started months ago, between decicoder, macleod and me. Uses the best modulation of k7zx (throwing shavings). But this ultraloa…
... if you have a +2A/+3 model, you can try it ... modified ROM: these models has special paging that allows RAM in lower ... -
Wanted CHEAP +3 gameI am looking for a cheap as possible working +3 game to test out a new machine I just picked up. Thanks B
I am looking for a cheap as possible working +3 game to test out a new machine I just picked up.
Thanks
B -
'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…
Here's "orange test snapshot" v4:-
[url] ... , attrfill1
; save old paging state in 'd'
ld ... /> flicker2
; Invert bit 3 of paging register
ld a,e ...
; Restore bit 3 of paging register
ld a,d ... -
+2A extended memory map & ULA bug?The [URL="http://www.worldofspectrum.org/faq/reference/128kreference.htm"]128K reference page[/URL] says: [quote]The ULA bug which causes snow when I…
... +2A if I switch to special paging mode, with RAM bank 4 ... ?[/QUOTE]
No. +2A/+3 ula don't snow. -
Pac-Man EmulatorMy Pac-Man Emulator for the Spectrum +2A/+3 is now available for download from: [url]http://simonowen.com/spectrum/pacemuzx/[/url] You'll need to su…
That has been already addressed in this very thread :) Mainly, because a special paging configuration is needed (0123) which is only possible on +2A/+3 models. -
New project: CargandoLeches. Ultraloads with ROMHi This project has started months ago, between decicoder, macleod and me. Uses the best modulation of k7zx (throwing shavings). But this ultraloa…
... if you have a +2A/+3 model, you can try it ... modified ROM: these models has special paging that allows RAM in lower ... -
about Dan DareHi all, I not think this is for MIA forum but want to ask and I will be grateful if anyone help me with answer. I get from ebay dandare tape, origi…
... .
About your proposed test with ZXDS/PZX, I also ... got (with wavscan) for the 3 "special" blocks:
Side A's ... -
Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…
... size, however I didn't test anything:
[CODE] ... ;A =168 if +2A/+3 else 0
ld d ... hl,$1031 ;STMT-RET (+2A/+3/+3e ROM.1)
... ld hl,$5b2f ;REGNUOY (+2A/+3/+3e paging)
MCCONT: push hl ... -
Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
very nice!
Presumably the Stage 1 bootloader could have code to detect +2A/+3 and set special paging mode? -
Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
... code to detect +2A/+3 and set special paging mode?[/QUOTE]
paging stuff it needs to do ... the 4K page)
Stage 3 is the contents of boot ... -
Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
... blame Phil for the buggy paging emulation in fuse, and Pete ... own ROM when the +3 is in a special paging mode, does this ... ,13 @@
machine_current->ram.special = 0;
normal_memory_map( rom, page ... -
Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
... own ROM when the +3 is in a special paging mode, does this ... -
128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…
... [code]
3 REM main program, lines 3-8999
... as headerless CODE
; test load with "RANDOMIZE bytes: CLS ... ,$1031 ;STMT-RET (+2A/+3/+3e ROM.1)
... ld hl,$5b2f ;REGNUOY (+2A/+3/+3e paging)
MCCONT: push hl ... -
GYRUSSJust found this video on youtube...does anybody knows about this? [url]https://www.youtube.com/watch?v=krmSJKE18_A[/url]
Also, I made a version that loaded from disk. It works setting a special paging mode, so it should work in +2A and +3 models. -
Patching RST routines?Hi all, I am quite unexperienced regarding the Speccy and today I made another attempt to make a concept for a SymbOS port to this machine. There is…
... Spectrum +2A/+2B/+3, which have additional paging modes that allow RAM ... . See the "ZX Spectrum +2A / +3" section of the [url="http ... Pac-Man emulator uses the special paging mode to have RAM pages ... 0/1/2/3 present. Code showing that in ... -
New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…
... to transfer
-b1,2,3 use an alt mem location ... which, when run on a +3, copies the snapshot from tape ... which when run on a +3 saves the snapshot to disk ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... /> [code]
48K 128K +3 ULA bus
-----------------------------
... concluded before from the screen paging test (i.e., 14362 is ... the pattern of +2A/+3 models is 7 contended and ... />
[quote]Which test are you referring to? Hikaru ...
