Not necessarily. Some games in TAP files have custom loaders that happen to use the standard ROM timings. Removal Deluxe is a good example.martingzzz wrote: ↑Mon Feb 19, 2024 11:03 am Around 60% (7369 out of 12329) of the "undetermined" downloads are tap files, meaning they have standard loaders.
Search found 403 matches
- Tue Feb 20, 2024 10:22 pm
- Forum: ZXDB Discussion
- Topic: Questions about "scheme types"
- Replies: 3
- Views: 155
Re: Questions about "scheme types"
- Tue Feb 13, 2024 12:46 pm
- Forum: ZXDB Discussion
- Topic: New Database Model ZXDB
- Replies: 517
- Views: 106232
Re: New Database Model ZXDB
Another ZXDB version is available! This version fails to build the database from ZXDB_sqlite.sql. It gives the following error: Parse error near line 565472: near "CHARACTER": syntax error TABLE IF NOT EXISTS prefixes ( text varchar(10) CHARACTER SET utf8 COLLATE u error here ---^ Parse e...
- Fri Feb 09, 2024 5:37 pm
- Forum: ZXDB Discussion
- Topic: New Database Model ZXDB
- Replies: 517
- Views: 106232
Re: New Database Model ZXDB
Let me know if that works for you! Thanks! I've converted that for SQLite thus, which seems to work (though I need to do some further checking): create table libraries ( title varchar(300), library_title varchar(300) ); insert into libraries select title, '' from entries group by title; insert into...
- Fri Feb 09, 2024 1:43 pm
- Forum: ZXDB Discussion
- Topic: New Database Model ZXDB
- Replies: 517
- Views: 106232
Re: New Database Model ZXDB
IMPORTANT: Columns "entries.library_title" and "aliases.library_title" are now removed in this release... Ouch! I've been bitten by that change. What's the quickest way to get "library_title" back (for software only, if that makes it easier) in a lookup table? I'm usin...
- Mon Feb 05, 2024 10:07 pm
- Forum: Programming
- Topic: A library of tap2sna.py recipes
- Replies: 87
- Views: 3207
Re: A library of tap2sna.py recipes
Fairlight 1 and 2 (128k versions) load and run on emulators but not on real hardware. 8BitSC , presumably you opened an issue on GitHub? I'm afraid I have no idea how the DIVMMC Enjoy Pro loads Z80 snapshots, so I can't even guess what's going wrong. Perhaps someone who has knowledge of that hardwa...
- Sat Feb 03, 2024 1:12 pm
- Forum: Announcements
- Topic: SkoolKit 9.1
- Replies: 0
- Views: 170
SkoolKit 9.1
SkoolKit 9.1 has been released . TL;DR version for the initiated: Improved support for 128K disassemblies, plus simulated memory and I/O contention. For the uninitiated: SkoolKit is a suite of tools that can be used to create a disassembly of a Spectrum game (or any other piece of software), in HTM...
- Tue Jan 30, 2024 3:24 pm
- Forum: ZX Spectrum Next
- Topic: ROTW units shipping soon
- Replies: 10
- Views: 795
Re: ROTW units shipping soon
And it's here.
- Tue Jan 30, 2024 1:54 pm
- Forum: ZXDB Fixes
- Topic: Olympia - wrong tape
- Replies: 1
- Views: 131
- Mon Jan 29, 2024 5:16 pm
- Forum: Games/Software
- Topic: zqloader
- Replies: 4
- Views: 288
Re: zqloader
What I meant to say: instead of "just" feeding it a TAP and hoping it can figure out how to load and start everything... I haven't used this tool, but from the documentation it looks as if you can feed it Z80 snapshots as well. Presumably its success rate is much better with snapshots tha...
- Fri Jan 26, 2024 12:46 pm
- Forum: ZX Spectrum Next
- Topic: ROTW units shipping soon
- Replies: 10
- Views: 795
- Fri Jan 26, 2024 11:50 am
- Forum: ZX Spectrum Next
- Topic: ROTW units shipping soon
- Replies: 10
- Views: 795
Re: ROTW units shipping soon
And now I have an import duty/customs clearance bill of over $100 to pay before I can receive the package.
- Thu Jan 25, 2024 9:43 pm
- Forum: ZX Spectrum Next
- Topic: ROTW units shipping soon
- Replies: 10
- Views: 795
- Thu Jan 25, 2024 7:26 pm
- Forum: ZX Spectrum Next
- Topic: ROTW units shipping soon
- Replies: 10
- Views: 795
Re: ROTW units shipping soon
So I hear they're shipping now. I haven't got a tracking number yet, though. <drums fingers>
- Wed Jan 24, 2024 9:39 pm
- Forum: Programming
- Topic: The --sim-load challenge
- Replies: 10
- Views: 617
Re: The --sim-load challenge
Apologies in advance to anyone who might have wanted to use --sim-load to produce a pristine snapshot of Gold Mine : It definitely won't work for the foreseeable future. Good news for anyone who might have wanted to use tap2sna.py to produce a pristine snapshot of Gold Mine from the original TZX: i...
- Mon Jan 22, 2024 3:53 pm
- Forum: ZXDB Fixes
- Topic: Double entry found
- Replies: 4
- Views: 401
Re: Double entry found
Not entirely relevant, but still interesting:
- RTC Kings Cross (Ashley Greenup)
- RTC Kings Cross (Dee-Kay Systems)
- Fri Jan 19, 2024 8:22 pm
- Forum: Programming
- Topic: Contention pattern for HALT
- Replies: 25
- Views: 1402
Re: Contention pattern for HALT
From what you're saying, this looks like a bug in Fuse to me. Or I'm misunderstanding. Fuse exhibits the same behaviour when the HALT is at 0x7FFF, i.e. PC+1 is 0x8000, in uncontended memory: 14335, 14345 ( pc:4 for the HALT, as expected), 14353 (implying pc:4 ), 14361 ( pc:4 again), 14369, 14377.....
- Fri Jan 19, 2024 7:35 pm
- Forum: Programming
- Topic: Contention pattern for HALT
- Replies: 25
- Views: 1402
Re: Contention pattern for HALT
Only the first fetch of the HALT itself. Then it executes NOPs internally, with PC already being PC+1. (So it's not like it keeps executing itself similar to LDIR, which is what people originally believed.) Are the contents of PC+1 continually fetched (with contention pattern pc:4 there too) while ...
- Fri Jan 19, 2024 12:19 pm
- Forum: Programming
- Topic: Contention pattern for HALT
- Replies: 25
- Views: 1402
Re: Contention pattern for HALT
it is basically NOP, but without advancing the PC. so it's the usual... I'll take that as a yes. Fuse seems to go with pc:4 , so I will too. On an unrelated note, I didn't realise until now just how much an instruction can be delayed when it's located in and/or accesses contended memory. Take CPIR ...
- Tue Jan 16, 2024 5:17 pm
- Forum: Games/Software
- Topic: Games Exposed
- Replies: 148
- Views: 7088
Re: Games Exposed
After i posted, I looked up your HTMLWriter extension docs, and it looks like that's probably the way to go. An HtmlWriter extension would be one way to go, but ...there is no established public API for mangling labels before they're rendered, so whatever modified writer you come up with may not wo...
- Tue Jan 16, 2024 3:31 pm
- Forum: Games/Software
- Topic: Games Exposed
- Replies: 148
- Views: 7088
Re: Games Exposed
I'm not really sure what you're asking here, so I won't attempt an answer, but I have to ask: Are you assigning labels to instructions that aren't jumped to or called from anywhere else in the code? If so, why?
- Tue Jan 16, 2024 12:36 pm
- Forum: Programming
- Topic: Contention pattern for HALT
- Replies: 25
- Views: 1402
Contention pattern for HALT
I've recently been looking into how memory contention affects Z80 instructions, using the Contended memory page of the Sinclair Wiki as my main source. However, one instruction that's missing from that page is HALT. Based on what I've already learnt, I'm guessing that HALT's contention pattern is si...
- Tue Jan 16, 2024 12:04 pm
- Forum: ZXDB Discussion
- Topic: How to detect MCoder II games?
- Replies: 29
- Views: 1828
Re: How to detect MCoder II games?
I use SkoolKit's snapinfo.py. The -f option searches for byte sequences, and the -t option searches for text.
- Mon Jan 15, 2024 12:24 pm
- Forum: Sinclair Miscellaneous
- Topic: The World's Greatest Computer Games with Chris Tarrant (UK 1984)
- Replies: 11
- Views: 661
Re: The World's Greatest Computer Games with Chris Tarrant (UK 1984)
Carrier Command and Starglider 2 could take a while in 128K mode, but nowhere near 25 minutes. I remember loading Project: Stealth Fighter which I think was still a multiload and watching the news while it loaded. I think Football Director II is the longest-loading game I've come across. It's the o...
- Mon Jan 15, 2024 12:12 pm
- Forum: ZXDB Discussion
- Topic: How to detect MCoder II games?
- Replies: 29
- Views: 1828
Re: How to detect MCoder II games?
For what it's worth, here are the 121 game snapshots from the list of 188 I originally posted (containing the text string 'THRELFALL and HODGSON') that also contain the byte string 2b36003e212a1bebcd74f12e0e3a19eb: Ali-Bebe Alien Attack Another Brick on the Wall 2 Anteater Fruit Machine Astroblaster...
- Fri Jan 12, 2024 6:29 pm
- Forum: Games/Software
- Topic: The 'skool' game core
- Replies: 16
- Views: 966
Re: The 'skool' game core
I was just saying they could fill in some unused stuff after the game was nearly finished if they wanted/could be arsed ;) There was definitely some of that going on. For example, try following the jump-aroundy path of these two routines: Print a character's title and name, and walk him onto the sc...