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+3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…
... and also RAM Page 7 - remember to disable interrupts while paging, and ... you enable interrupts after your paging operations.
Now ... , you simply reverse your paging operations, and return to ... br /> Just copy the paging segments and wrap them around ... -
Refactoring the ULAplus HDL descriptionFor the ZXUnio project, I'm refactoring the Verilog code I wrote two years ago to describe the ULA and the ULAplus devices. When I've taken this code…
... room to spare for +3 paging ports.
[img]http://yoursmiles ... core features +3 paging scheme, complete with all-RAM modes. See media ... -
+3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…
... also RAM Page 7 - remember to disable interrupts while paging, and ... you enable interrupts after your paging operations.
... , you simply reverse your paging operations, and return to ... Thanks Bert, I forgot about paging for +3DOS configuration before ... -
Ghosts n' Goblins loaderI'm trying to put Ghosts n' Goblins onto a +3 disk but struggling to understand the mc loader. Basic loader [code] ink 7 : clear 25000 : load "" cod…
... bug and don't work on 128k machines. It seems that paging ... -
Ghosts n' Goblins loaderI'm trying to put Ghosts n' Goblins onto a +3 disk but struggling to understand the mc loader. Basic loader [code] ink 7 : clear 25000 : load "" cod…
... bug and don't work on 128k machines. It seems that paging ... -
Idea: New interface 1There are a lot of great new interfaces to plug into the back of the spectrum, but things quickly get rather messy! The interface 1 is a very tidy s…
... up (Yellow border) or not paging one of the ROMs in ... can remember the ZX81 and RAM pack wobble you will appreciate ... -
Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... what winston was saying about paging getting hairy would be if ... get something into the divide RAM from a routine on the ... buffer in the speccy's RAM. -
Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... that has paged ROM and RAM on board, and it only ... , and it is prevented from paging in on traps etc.)
Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... are empty etc) to speccy ram that is going to mean ... once obviously, but all the paging happens repeatedly. :o
[/QUOTE ...Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... quite a bit of Spectranet paging stuff in there. The code ... and used 16K paging (the Spectranet uses 4K paging and it's ...A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
... below 49152, page ROM2 and RAM 7
dos_open equ ... />
; paging routine
; a=page
New games - should they be 48K or 128K?Here's a question for new games - which machine should they be developed on? If I write a game for the 48K Spectrum, is it appreciated that it will …
... memory as the instant screen paging. You can use it to ... in at the top of RAM for writing to you are ... to only 16K of uncontended RAM in the middle for the ...Refactoring the ULAplus HDL descriptionFor the ZXUnio project, I'm refactoring the Verilog code I wrote two years ago to describe the ULA and the ULAplus devices. When I've taken this code…
... core features +3 paging scheme, complete with all-RAM modes. See media ... you have 32K of uncontended RAM and both screens paged in ...The Hobbit - Chaos EngineI had a bit of a slow day yesterday, so I ended up playing 'The Hobbit' (Version 1.0 from this site) for a few hours. I know how to complete the gam…
... that was due to bad RAM rather than bad programming - nor ... would admit was the 'DO' bug. Everything else was a feature ...Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…
... see, is that as any RAM that is accessed by the ... ROM address space, the "new" RAM between 0h and 3FFFh would ... ula board' can have also paging circuit with VRAM bit inverted ...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…
... your interface shares the same 'bug' that allows it to work ... patch program to fix the bug in GDOS that I promised ... , the gals 20v8 and the ram 6264, the eprom, of course ... the desk.
The bug that allows the 128k to ...ESXDOS 0.8.5 and .Z80 on +2B or +3Last week I received some .Z80 snapshot files from a DivMMC EnJOY! user to test. These files didn't work on his ZX Spectrum +2B. [URL="http://benophe…
... ! as it has 128KB of RAM, and a lot is currenly ... toastrack ROM into DivMMC EnJOY! RAM when loading 128K snapshots, but ... ZX Spectrum's own ROM paging.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…
... , the gals 20v8 and the ram 6264, the eprom, of course ... ! 8-)
[QUOTE]The bug that allows the 128k to ...Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…
... to store the palette in RAM, but I don't think ... multicolour too, and 128K-like paging would be nice, given what ... . The propeller has 32k of ram. The every pixel any attribute ...Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…
... as PLL's and embedded RAM blocks. I've been put ... and wiring it up dead bug style. I've been practicing ... ? Will it have any extra ram in addition to whatever the ...HDMI generation by cloning video ram(coming from [url]http://www.worldofspectrum.org/forums/showthread.php?p=768257&posted=1#post768257[/url]). A thing I was brainstorming about.. Why …
... respond to any video ram change in the ZX ... No analog circuits, no video ram reading and contention problems.
ram, with HDMI output...
... palette and multicolour, and 128K paging, then maybe the timing ...Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]
... clones use two paging ports. PROFI support memory paging compatible with ZX ... of current ram page. For example on Pentagon 1024 are paging bits ... can return true number of ram page as one value D0 ... is same in all memory paging modes (on PROFI).
Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]
... clones use two paging ports. PROFI support memory paging compatible with ZX ... of current ram page. For example on Pentagon 1024 are paging bits ... can return true number of ram page as one value D0 ... is same in all memory paging modes (on PROFI).
Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]
... reading of not only linear RAM page number 0- 63, but ... you can read out individual paging ports in their full state ... to unblock the already blocked paging (I think bit 5 of ...Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]
... easy make true values of paging ports because low 3 data ... /32765 0111111111111101 0xxxxxxxxxxxxx0x ZX128 write bug CPU3 Pag(2)
0xxxxxxxxxxxxx0x ...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…
... = IM2 table is in slow ram = ulo show snow/raining effect ... there any chance for a bug-fixed version of this game ...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…
... #FC00-#FD00 in ZX ram pages 0 and at same ... position on ram page 4.
Game ... use only two ram pages - 0 and 1. Paging routine must be ... rewrite for use ram pages 0 ... IM2 table to #FCxx will ram area #5B00-#5BFF free for ...+128 with usr0 in menu screenIve just watched a video of a guy with a spectrum and on the loader menu i think under calculator the menu had an entry for usr0,anyone aware of this…
... black bar and the little bug when you type something wrong ... of the 48k had 64k ram when i should have used ... with black bar and blue bug 48 basic the original 48 ...Games that crash because of contended memory.I find these are really annoying. You load up a game like Astro Marine Corps, Fantasy World Dizzy, Dizzy: Prince Of The Yolkfolk and so on (the init…
... AndyC;725064]It's a bug in the original 128 and ... I register points into contended ram. Emulators never bothered to replicate ... they are immune to the bug.
It was ... />
JSpeccy can emulate this bug, not very realistically though, because ...Help put this back to 16kSo this issue 2 arrived today and ive opened it up just to nosey and confirm that infact it is an issue 2. Now from the help offered in an earlier po…
It should have the ULA bug correction transistor somewhere. It's ... always. Next to the upper RAM is another common location. Of ...
