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Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... , the TK85 has an extended ROM with hi-speed loading and ... a description of the extended ROM routines here:
[url="http ... -
Writing for MultifaceI was just wondering, is it possible to write a BASIC program, compile it and use the Multiface to run it? I'd like to write a small util to edit te…
... that doesn't use any ROM routines, because they'd be unavailable ... -
Writing for MultifaceI was just wondering, is it possible to write a BASIC program, compile it and use the Multiface to run it? I'd like to write a small util to edit te…
... ROM game for the crap games competition by replacing the tape routines ... , and if it used any ROM routines in that top 8k. I ... don't know much about ROM routines, and machine code in general ... -
Why did the Commodore 64 lose to the Spectrum in the UK?The Commodore 64 was released in the UK in 1983. As we all know, it was a great machine from a US company with a much larger financial backing than t…
... it cost ?125 for the 16K version and ?175 for the 48K ... version. At the same time the ... -
The Key - version 5I used to use this to copy games (back up my own tapes, naturally!) when I first got my Spectrum in '83. Latterly used v7 which is in the archive, bu…
The Key was just a rom-loader copier. Version 5 couldn't even copy headerless files. Version 7 could (I think) but that was the only type of "protection" it could do. -
Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?
Yeah, that'll do it nicely. Adds another 70+ T-States to the routine tho'. Personally I'm not a fan of using ROM routines unless I'm going for space-saving code, but that's just me.
Should give Rob a few ideas to try out anyway. -
The Key - version 5I used to use this to copy games (back up my own tapes, naturally!) when I first got my Spectrum in '83. Latterly used v7 which is in the archive, bu…
... Key was just a rom-loader copier. Version 5 couldn't ... even copy headerless files. Version 7 could (I think) ... I still have a copied version of The Key somewhere. The ... version I have did not ... I can't remember what version it is, but I'll ... -
What's the RAND USR code for the test screen?And what versions of hardware does it work on? Ta!
... . While none of the Spectrum ROM routines were written to be called ... were tied to the 128K ROM and even less likely to ... screen was in the other ROM.
Even Amstrad could ... into a debugged Spectrum 128K ROM but just could not be ... -
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 …
... games make use of the ROM.
How ... position, and call the ROM's PRINT routine. It ... number - just call the ROM's random routine, it' ... br /> BASin's compiler uses ROM routines heavily, and scores for speed ... uses its own custom routines for. BASIC is a ... -
kobrahsoft software cataloguesNot actually software but two kobrahsoft catalogues 1989 and summer 1989. They appear to list a lot of software not on the archive, if you are inter…
... /> The tape was easily TZXed ;-), 16k version, wonder if there was a ... 48k version ?
I'll get the ... -
Loading schemes18 years ago I hated loading schemes like Alcatraz and Speedlock because they were a b*tch to copy and became unreliable when the tape got older. Now…
... entire loading routine from the ROM into high RAM, alter the ... byte value as their equivalent ROM routines. -
OpenZXRom v2006-05-17 releasedJust knocked out a new release of OpenZXRom last night - a GPL licensed functional replacement for the original Spectrum ROM. [url]http://matt.west.…
... . Not surprising - probably not uses ROM calls :D .
Project ... not based on original Speccy ROM.
As for legal ... of important and frequently called ROM routines.
First in list are ... -
Spectrum audio signallingI've had a poke around in some of the docs (and my Z80 assembler-fu is so rusty it'll be a while before I grok the Complete Spectrum ROM disassembly)…
... ]most[/i] loaders (including the ROM routines) use only the edge transitions ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... was redesigned in the c64 version to keep up the framerate ... way that made the c64 version playable.
[quote]
16k and 48k ram versions. There ... second display file in the 16k version. They did add the second ... -
Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…
... with a rewrite of the ROM routines, was still far too slow ... -
Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…
... not going to utilise the ROM routines (and thus lose the speed ... have to code your own routines for PRINT etc. Assembly language ... -
Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…
... not going to utilise the ROM routines (and thus lose the speed ... have to code your own routines for PRINT etc. Assembly language ... stores numbers. Also, although the ROM routines generally aren't the fastest ... -
Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…
... not going to utilise the ROM routines (and thus lose the speed ... have to code your own routines for PRINT etc. Assembly language ... /> Even if using lot of ROM calls MC is much faster ... -
Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…
BTW, I think most BASIC compilers still depend on the ROM routines so even if you compile it a slow ROM can result in slow code. Compiling a BASIC program does let it skip the parsing and searching for line numbers/variables which are very slow. -
Floating point representationI'm planning on picking up the [url=http://matt.west.co.tt/category/spectrum/openzxrom/]OpenZXRom[/url] project from where I left off a few months ba…
If you decide to check out the TRS-80 ROM I also have a document that lists ROM routines so it's a lot easier to find stuff than the disassembly. -
Which Emulator?I?m interested to know which emulator people use! Which one has the look and ?feel? of a real Spectrum and which one has the most accurate loading e…
... the money...[/QUOTE]
Version 6.40 does, and works ... /spectac_640.jpg]UniDos ROM[/url].
But version 6.40 is ... -
Which Emulator?I?m interested to know which emulator people use! Which one has the look and ?feel? of a real Spectrum and which one has the most accurate loading e…
[QUOTE=Steve Parry-Thomas]Version 6.40 does, and works ... /spectac_640.jpg]UniDos ROM[/url].
But version 6.40 is ... -
MB02+ EmulationWhile I realise that a lot of people don't like it for one reason or another, I'm still a fond user of RealSpectrum. However, for the first time sin…
... work of reverse engineering the rom routines or third party software. Pure ... -
Sam coup? - some questionsHi everyone. Got myself a sam coupé without any kind of cables. I was a bit suspicious about it's working condition. Hooked it to a pc at psu a…
... of great help regarding where ROM routines etc are, and ports and ... (roughly)... there`s an entire ROM dissasembly too floating around by ... -
Sam coup? - some questionsHi everyone. Got myself a sam coupé without any kind of cables. I was a bit suspicious about it's working condition. Hooked it to a pc at psu a…
... of great help regarding where ROM routines etc are, and ports and ... (roughly)... there`s an entire ROM dissasembly too floating around by ... paging.[/QUOTE]
ROM routines are quite useful if you ... lot better to ignore the ROM and write what you ... -
Sam coup? - some questionsHi everyone. Got myself a sam coupé without any kind of cables. I was a bit suspicious about it's working condition. Hooked it to a pc at psu a…
[quote=Quazar]ROM routines are quite useful if you' ... lot better to ignore the ROM and write what you need ... -
Sam coup? - some questionsHi everyone. Got myself a sam coupé without any kind of cables. I was a bit suspicious about it's working condition. Hooked it to a pc at psu a…
... a simple scroller using the ROM routines for placing characters and rolling ... another scroller but not using ROM routines, writing all my own code ... -
Sam coup? - some questionsHi everyone. Got myself a sam coupé without any kind of cables. I was a bit suspicious about it's working condition. Hooked it to a pc at psu a…
... a simple scroller using the ROM routines for placing characters and rolling ... another scroller but not using ROM routines, writing all my own code ... -
Small C on Sam help neededI'm trying to make good on some of my old developments that fell by the wayside and one of them uses Small C. The reason I stopped was down to not h…
... attached to your program calls ROM routines ( RST 16 and jump table ... -
Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... />
The problem with the ROM routines is that the data your ... it can seen when the ROM is paged in (ROM0 is ... spare buffer, then using the ROM to pop it on the ... copying it twice. Also the ROM routines aren't particularly fast anyway ...
