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AmericaI've been wondering, was the Spectrum released in America? Was it popular? Are there Spectrum games that were made in America? There must be a few A…
... board in order to page this memory and the fact that ... system enumerated the expansion memory and would use print#, ... a better machine than the 128K Spectrum in 1986, even ... it didn't have the 128k RAM. I'm not ... a starting point for the 128K Spec. The former vice ... -
need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... SPRSRC) ; source of sprite in memory (sprite is stored in such ... /> CALL DRAWSPR ;Call sprite drawing routine
RET
< ... start of a 256 byte page
* Requires 512 bytes ... the next
* 256 byte page.
SCRTAB EQU 65024 ... -
Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... enabled, processor jumps to interrupt routine (TIME: 0)
in the ... /right border) ULA try read memory page (16384-32767}. if CPU try ... read the same page (that means write to memory, read memory or just ... -
Clone Project feedbackFinally i now have some time to start again with my clone project. I have decided to drop the 48k project and go directly on a 128k clone. This migh…
... pages 5-7 of a 128K model.
It will ... also want to have enough memory to add extra grapich modes ... in the future. And memory is cheap.
[quote ... a look at my +3s page and perhaps find some useful ... -
commodore64just download a c64 emulator and find this interesting site [url="http://www.c64.com"]http://www.c64.com[/url], lots of games and screenshots, ..i re…
... it that much, nice 128K music though from memory, might check the ... is used on the titles page of the Speccy 128 version ... Capulets" used for the titles page.
Game-wise, the ... -
Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
... :22, Ralf wrote:
My routine is as follows
1 ... to draw everything into a memory buffer as you see fit ... and slows things down. The 128k Spec has the double buffer ... -
128k Shadow Screen?When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without canc…
... the +2A/+3. On the 128K/+2, RAM pages 1, 3 ... always wondered why it was page 5 and 7 since 6 ... programs that use the full memory and run across the different ... -
Interest in a new adventure game?After recently reading the feature on Gilsoft in Retro Gamer I got the urge to go back to my adventure tools and create something which was actually …
... used PAW to create a 128k adventure before?
I ... sit on page 0 (i.e. the original 48k of memory). Generally ... the support stuff for a 128k adventure? I've got about ... branch off into a new page, but I wouldn't want ... -
Interest in a new adventure game?After recently reading the feature on Gilsoft in Retro Gamer I got the urge to go back to my adventure tools and create something which was actually …
... used PAW to create a 128k adventure before?
page 0 (i.e. the original 48k of memory). Generally ... the support stuff for a 128k adventure? I've got ... start a new page now. I wrote a 128K PAW adventure ... are all 48K games - 128K games are a lot more ... -
"Sinclair Zx Spectrum: Absolutely Better Than Commodore 64"Did you ever read this? [url="http://www.alfonsomartone.itb.it/fztsmo.html"]http://www.alfonsomartone.itb.it/fztsmo.html[/url]
... and there's a 16 page monster thread to read...
routine (which would've been closer ... at the hardware, but from memory it's not the same ... -
z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…
... you have issues with available memory, there are a couple of ... being done on the tutorial page (it involves a call to ... a paging library for the 128K spectrums and attempt to use ... 'll be coding the first 128K game with AY music and ... -
divIDE issuesI discovered a few issues with the divIDE hardware and FATware software that may be of interest to some people. 1. ROM paging If your Spectrum is a…
... resulting action (to page in or not to page) depends on ... issues with 128k Z80 snapshots loading. The IM2 detection routine is ... because some 48k snapshots test 128k paging for additional runtime ... measuring the delay of ROM-routine execution time, no software ... -
Emulator File types...SNA/TAP/TZX/Z80/ZXS All I knew about the Spectrum was how to play games on it, but since being introduced to pc emulations back in '97 I've always w…
... begin changing in the memory to reflect the state ... just dumping this entire memory state to the tape ... 's a "snapshot" of the memory.
[/quote]
128K memorydump where SNA is ... Only the standard ROM routine is used for loading from ... -
Ripping Text from ZX games running on EmulatorsHello one and all - All hail Retro! I'd like to know how to rip all the .txt from ZX games running on a windoze emulator (I'm a writer and like do…
... files (if nothing else, consider 128K snaps, for which 'RAM address ... , I agree about banked memory in 128K snaps, as there's not ... 't originally aware of the 'page boundary' issue in those (uncompressed ... -
Back into PAWHave nearly finished writing my 128k adventure game, but have hit a snag. Page 0 is now empty of bytes, so have created a new page. However, I can …
... need a small amount of memory, you could try going ... messages out from page 0 into a new page (ie, start ... a new page, delete the ... messages within the new page and re-type the ... you read the essay on 128k considerations in the technical ... -
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…
... /> [code]
When memory is being paged, interrupts should ... 2 RAM page (0-7) to map into memory at ... does not affect the memory between 0x4000 and 0x7fff, ... . ROM 0 is the 128k editor and menu system; ... scratchpads.
Memory banks 4-7 are contended ... -
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…
... displayed
2) which memory bank is mapped on 49152 ... is present two times in memory
so ... 7 to be accessible via page on 49152
draw ... idea to have your sprite routine above 49152 except you ... have the same routine at same place in ... -
Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …
... and sometimes the print screen routine for menus.
... . Then the interrupt service routine for up to 6 peripherals ... The hw would make the memory page switch on spotting an instruction ... are they enabled) that the routine would seem to operate normally ... -
How can I tell if 128k in codeIs there an easy way in code to check if the Spectrum has 128k, rather than 48k so I can display a message "Must have 128k" etc
... which machine it is (48k, 128k, +2, +3). I think ... If the issue is with memory, the best thing to do ... use the paging. Page in a RAM page, write a byte ... to 49152, page in another RAM page, write a ... to 49152. Then page the original page back in and test ... -
z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…
... optimizations in the move sprite routine that tries to avoid making ... /> - The engine is now a memory pig. splib2 required less extra ... requires the same amount of memory as double buffering and on ... already have one eye on 128k support for larger games.
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…
... , whereas divIDE prefers to only page its own RAM in when ... in the 128k. Once you set it, all ZXCF memory would become ...New - BASin r13a is available for downloadHi all, Here's the latest BASin. Mostly just bugfixes, but also now has the upgraded UDG editor which can now edit multiple UDGs on one editing gri…
... Format when you rip from memory (or create a new blank ... 1 byte. For the sprites routine I'm currently using to ... should masks have their own "page" in the palette, or should ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... the first 256 bytes of memory. This mode was rarely used ... /> [*] The Basic system's interrupt routine at 0x38 takes at least ... on an exact 256-byte page, meaning the least significant byte ... file[/URL] suggests the following memory map:
[code]
The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... and not the address my routine was at.
I ... before it, but the fill memory block function didn't seem ... on that dialog the RAM Page combo box overlaps the Fill ... that changing a block of memory would of caused a new ...Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…
... the variable in any random memory location, and put that location ... be the ascii code - the routine decodes the variables' names as ... routine (Bit 7 of FLAGS).
[quote]
Secondly, the page ...The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... by some mechanism.
* Memory segmented into 8k or 16k ... the ability to program any memory page into any 8/16k segment ... ROMs and any of the 128k RAM.
The system ... sprites (since the 12k video memory is a drag on performance ...The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... used to.
[quote]* Memory segmented into 8k or 16k ... the ability to program any memory page into any 8/16k segment ... ROMs and any of the 128k RAM.[/quote]
Actually, that ... sprites (since the 12k video memory is a drag on performance ...The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... />
I actually meant choose page sizes at 8k OR 16k ... by any page of ROM or any page of the 128k RAM. Ie ... I'm not talking about segmented memory ... . When you go up to 128k memory you have to start thinking ...The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... /> [quote]I actually meant choose page sizes at 8k OR 16k ... by any page of ROM or any page of the 128k RAM. Ie ... I'm not talking about segmented memory ... . When you go up to 128k memory you have to start thinking ...
