-
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... ZX128+2A/+3)
- new memory layout for slow and fast ... ]- I/O operations are not contended (fast IN/OUT instructions)[/B ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... ZX128+2A/+3)
- new memory layout for slow and fast ... ]- I/O operations are not contended (fast IN/OUT instructions)[/B ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... ZX128+2A/+3)
- new memory layout for slow and fast ... ]- I/O operations are not contended (fast IN/OUT instructions)[/B ... -
DivIDE questionsHi All, I'm the proud owner of two DivIDE interfaces, that I have just "inherited" from a friend. One of them is the original one and the other one …
... ram use same memory chip then all roms are contended with all ... -
Upgrading the Humble Spectrum 128 +2 (Grey)Hello there my fellow WoS'ers I am at a subtle in-pass in my wants for one of my +2 motherboards. I received this mobo, DOA in a job lot from fleab…
[B]The ability to switch memory contention modes[/B]
... or not. I'd have contended I/O etc (original 128 ... -
Frank N SteinThis one > [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0001849[/url] Always seems to crash about level 7 (maybe a bit more) or so with an …
I can only assume its not emulating some form of ULA timing ( not my area :-? ) accurately. Would contended vs uncondended memory be an issue as the 'real' machine has it emulators might not emulate it accurately. -
ZXDS questions...Hi Folks, I am hoping someone on here knows something about [B]ZXDS[/B]. I have downloaded the program to my daughters [B]DSi[/B] (for testing purp…
... personally. I am not using ZXDS to run games (I have ... keyboard bitmaps around would fool ZXDS but alas not. :(
memory as required. With snapshots this ... problem goes away.
ZXDS is seriously a fantastic piece ... -
binutils questionSince there's a few people using binutils these days I thought I'd give it a go and see whether it solves my hunt for a replacement assembler/librari…
... which partitions the Spectrum's memory into sections (those familiar ... create sections within these for contended-code, code, data, sprites, ... , with no gaps, maximising memory use and also honouring the ... the source and can maximise memory use - You know the ... -
128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…
... writing to port 0x3ffd activates memory paging. To quote from guessmachine ... [/i] from that port induces memory paging on the 128K (and ... banks 5-7 should be contended on a 128.... or is ... />
Correct. Odd pages are contended on the 128, whatever the ... -
128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…
... . It shouldn't be a memory contention.
I forgot ... two /PHICPU pulses aren't contended and last four /PHICPU pulses ... can be contended. The fifth a the sixth ... possibly contended pulses are missing. The contention ... -
Sneak Peak...Hi Folks, A sneak peak of the application I have been writing over the last few months (with a lot of help from this group, BASin and recently ZXDS)…
... more can be stored in memory (42K is not huge at ... etc.
[*]Patrik for creating ZXDS - a stunning piece of software ... -
Nintendo shares slump...Hi Folks, I see that Nintendo's share price has slumped after poor results and luke warm sales of the 3DS console. [url]http://www.bbc.co.uk/news/b…
... your DS with an additional memory card to try and access ... the Nintendo Corp.
ZXDS is a standout amongst the ... -
Sneak Peak...Hi Folks, A sneak peak of the application I have been writing over the last few months (with a lot of help from this group, BASin and recently ZXDS)…
... to improve performance and reduce memory use
* Fixed bug ... 40+ steps
* Updated the ZXDS Spectrum+ keyboard images to include ... required to the '*' key on ZXDS keyboard graphic
... has my recent experience of ZXDS. The Spectrum is/was ... -
3DS and Speccy Emulators?Noticed that there seems to 3 or 4 emulators for the Nintendo DS. I've just picked up a 3DS. iS there any one that works best to go for? I'm assuming…
... .php?t=34654&highlight=zxds+3ds[/url]
not ... the guy seems to have zxds working on the 3ds.
memory card into the 3ds, i ... -
Dead Spectrum+Hi! Any suggestions where to start finding what's broken: Spectrum+ with issue 6A motherboard and nothing on TV. Top row of the upper memory chips g…
... memory was defective). If not, one or more chips in the contended ... -
Barleywood Z80 Simulator LicenceHi All, Does anybody know if it is still possible to get a Licence for this Simulator? The reason I ask is that I'm currently using it to develop a…
... to have a view of memory, registers, stack etc on display ... exactly, even old RealSpectrum or ZXDS have debugger. just choose what ... -
Help with Spectrum 128k reparationHi! I have the following symptoms with a 128k unit version 6U - On power on, black and white bars (one char width each), white background - Once po…
... [/url], IC6-IC13 is the contended RAM, and the one I ... problem is that the new memory configuration didn't work as ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... on finding out which memory from the contended bank is damaged (and ... the CPU, or the non contended RAM, as these devices share ... probably a chip in non contended RAM.
Do the ... probably), or faulty multiplexers. Non contended RAM is not directly connected ... -
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... port ram and have nothing contended :D[/QUOTE]
memory, it uses just two 4464 chips. No separate banks for contended ... and uncontended memory. You know what? All memory is ... uncontended. Yes, even the screen memory.
Two ... -
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... 's no separate memory banks for contended and uncontended memory. IN 255 always ... -
Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…
... /> Won't the number of contended display accesses be the same ... ?[/QUOTE]
But the memory access pattern is not the ... only has one of them contended while the other isn't ... -
Faster CLS...Hi Folks, Looking at the CLS command in the Spectrum ROM disassembly it seems rather complex. Does anyone know of a simpler/quicker routine that wi…
... is a strange one - on ZXDS you can actually see the ... fast!) then blank the screen memory (both are doumented earlier in ... -
New interface for ZXThis is my old (2004) unfinished project of internal interface for ZX Spectrum 128+2: ([url]http://velesoft.speccy.cz/hardware_in_development.htm[/u…
... I mean pentagon has no memory contention, is this interface removes ... and 7(both videorams) are contended as on orig.ZX. ... , or active FAST PORTS/MEMORY for better compatibility with russian ... use also MB02+ memory (compatible with DIVIDE+ memory) and enable use ... -
Double Dragon Remake: The Development ThreadOk guy's, so this is the new thread that will be focusing on Jim Bagley's development of the Double Dragon remake that was first proposed by myself a…
... want to use the extra memory pages, you'd have to ... while you access that extra memory, or repeat the interrupt table ... pages (wasting a bit of memory), or take a very special ... there's a list of contended and uncontended banks anywhere, but ... -
ULA snowHow is this feature implemented in emulators ? And how exact is the emulation ? I somehow supposed that ULA snow is something that is not very determ…
... I" can never point to contended areas, even when interrupt is ... and $C000, and $C000 is contended?)[/QUOTE]
... data from memory.
$BFxx and $C0xx is not contended unless ... byte placed on the memory bus) it causes contended RAM to be ... -
ZXDS 0.9.3 beta 1Hello, Today it's exactly five years since the [URL="http://zxds.raxoft.cz"]ZXDS[/URL] has come to life on my DS. To celebrate this anniversary, I h…
... practice, though, in context of ZXDS, the CPU speed would be ... the features and stability of ZXDS now - the pre-selected keyboard ... these are not really "stretching" ZXDS I feel.
The ... /> 2) Microdrives
3) Increased memory e.g. a 256K Spectrum ... -
Difficult to find upper RAM fault.I've recently repaired an issue 3B 48K Spectrum that had a tricky to diagnose upper RAM fault, so I thought I'd post a report of what I found here. …
... ROM doesn't use lower memory at all (except for image ... , are all located into non contended RAM.
Depending upong ... -
ZXDS 0.9.9 beta 1OK kids, here we go: Let me announce the latest and greatest [URL="http://zxds.raxoft.cz"]ZXDS release[/URL]. Mouse emulation, tape recording, stats …
... to see them on virtual memory card?[/QUOTE]
Hmm ... seeing picture of desmume running ZXDS as if it was some ... -
ZXDS 0.9.9 beta 1OK kids, here we go: Let me announce the latest and greatest [URL="http://zxds.raxoft.cz"]ZXDS release[/URL]. Mouse emulation, tape recording, stats …
... problems with multiload games in ZXDS myself, but I get your ... TR-DOS site (linked from ZXDS homepage) and choose [Games] at ... just load the file in ZXDS and it will automatically start ... only enhacements are storage and memory upgrades, so the games will ... -
How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... 2's use of screen memory was discussed here too.
memory in the 48k version of ... ', ([SIZE="1"]it's not contended is it, as I understand ...
