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Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... much more fun/easier to understand what the Z80 ... better way to fill memory blocks it to 'ab'use ... then you use LDIR to copy (HL) to (DE). LDI automatically increases ... that causes the same byte to be copied over & ... the block size you want to fill:
[CODE ... -
Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …
... QUOTE=Matt_B;465610]The quickest copy would use LDI during the ... it kicks in, and back to LDI afterwards. Has anyone ... gasman) find the quickest copy is to POP from uncontended memory during ... one screen line), then PUSH to screen memory during the uncontended ... -
Best Way to Load TZX Files on a Spec Using a Mac?Evening all, I've spent the afternoon bastardising two knackered Spectrum +3s, and I now have one fully working unit. Although I've got a working d…
... /> You could also convert the TZX to VOC or there's probably ... -
Best Way to Load TZX Files on a Spec Using a Mac?Evening all, I've spent the afternoon bastardising two knackered Spectrum +3s, and I now have one fully working unit. Although I've got a working d…
... /> You could also convert the TZX to VOC or there's probably ... has given me a reason to start faffing around with Apple ... do now is drop the TZX on to the Util and off ... -
Issue 65 of Scene+As I understand that some programmers wants to be informed if their programs were distributed on our disk magazine, here is a list what will be on ne…
... but ofcourse you are FREE to be a shouter , just ... MAGAZINE EVER ASK PERMISSION TO PUBLISH any picture or ... are free in the internet to publish in a disk - ... here on WOS conversions from TZX to Tap or vice versa. ... details, maybe he failed to be a lawyer and now ... -
Beebs Back in Education AgainBletchley Park Museum of Computing is running classes for A-Level students in computing using old BBC-Bs: [URL="http://www.bbc.co.uk/news/technology-…
... user's home directory (copy itself to the !Boot file, set ... file). The sole purpose was to replicate.
... I was just about to embark on the code ... I ever got around to finish the self replicating ... much fun it was to see Wordwise introduce deliberate ... -
Booting with a programIf you ever had a VTX-5000, you'll remember it booted to a menu. The menu itself was written in BASIC. When the Spectrum initialized, this BASIC prog…
... don't want the programmer to have to add extra stuff, saving ... would have to do with GO TO), instead I just copy NEWPPC to OLDPPC ... . (The trap itself is just to signal "ROM done initializing", and ... the base modules uses it to display some useful information, a ... -
Booting with a programIf you ever had a VTX-5000, you'll remember it booted to a menu. The menu itself was written in BASIC. When the Spectrum initialized, this BASIC prog…
... don't want the programmer to have to add extra stuff, saving ... would have to do with GO TO), instead I just copy NEWPPC to OLDPPC ... . (The trap itself is just to signal "ROM done initializing", and ... the base modules uses it to display some useful information, a ... -
ZX ULA Book releaseThe book is complete and with the printer. Once the proof copy is back and checked, and assuming no changes are required, I'll start shipping all you…
I really hope no ones asks for a signed copy only to see it advertised for sale later...
Still waiting for mine. :) -
compressing basicI thought I'd ask here instead of the basic forum.. in the sense of giving me 1 command line, and NOT the whole listing joined up etc. and it uncom…
... program size is set to exactly 2k to simplify calculations, so ... br /> 25626 237 176 LDIR ;copy program# from stack
... /> 25656 237 176 LDIR ;copy program# to stack
25658 201 RET ... -
ZX ULA Book releaseThe book is complete and with the printer. Once the proof copy is back and checked, and assuming no changes are required, I'll start shipping all you…
[QUOTE=zxbruno;475356]I really hope no ones asks for a signed copy only to see it advertised for sale later...
Still waiting for mine. :)[/QUOTE]
You should have it by now, surely? -
what are the hardest speccy games.can members please post what they feel are the hardest spectrum games. there are tons of them. a few i think where hard. midnight resistance jet se…
Found it!!
Stainless Steel - [url]http://www.youtube.com/watch?v=JYE0YTKneiQ[/url]
[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0004806[/url]
Just downloading the tzx to see if it is as hard as I remember it. -
what are the hardest speccy games.can members please post what they feel are the hardest spectrum games. there are tons of them. a few i think where hard. midnight resistance jet se…
... ]
Just downloading the tzx to see if it is as ... -
what are the hardest speccy games.can members please post what they feel are the hardest spectrum games. there are tons of them. a few i think where hard. midnight resistance jet se…
... ]
Just downloading the tzx to see if it is as ... [/URL] being hyped up prior to it's release. It's ... scanner.
Being put back to the start of the level ... -
Loading BASIC programs stored as "bytes:"Hi all, I have a question regarding loading BASIC programs, that I managed to save as machine code (I suppose) when I was a child, as a result of e…
Kobrahsoft published a utility to do this for you. It' ... the majority of their 'tape-to-drive' conversion kits, e.g ... .cgi?id=0020715"]SD4+ Tape to Microdrive Utility[/URL].
Use ... available in the conversion kit) to find out the start and ... -
Brand new Horace GameWe could think on how should the next Horace Game be, taking in account that the past three are mixtures of old, well established classic arcade game…
... is not available in TZX format it is claimed ... as "missing perfect TZX image" or something like ... s why I tend to release in TZX so the "perfect ... ), so utilities such as TZX to TAP worked fine. Some ... did was using TZX2TAP.EXE to convert each file, and ... -
Brand new Horace GameWe could think on how should the next Horace Game be, taking in account that the past three are mixtures of old, well established classic arcade game…
... release a game as a TZX, as that is a ... for the "loading screen" to be much use/fun anyway ... playing Speccy games (I commute to work :sad:), and the ... is not fast enough to fast load .tzx files, whereas .tap ... some problems with converting .tzx to .tap files? -
Loading BASIC programs stored as "bytes:"Hi all, I have a question regarding loading BASIC programs, that I managed to save as machine code (I suppose) when I was a child, as a result of e…
I wouldn't attempt to guess the start address of ... an emulator with the ability to handle real tapes, and set ... to +3 mode) - I'd go ... an informed decision as to where to load the code or copy it to. -
Sprite RoutineI was wondering if anyone could point me in the direction of a really basic example of a per-pixel sprite routine? Preferably commented. The screen …
... /> LD (HL),A ;copy the to screen
INC DE ... br /> DEC L ;return to left side of the sprite ...
CALL OnePixelLineDown ;go to next line of pixels
to the same character line< ... /> LD A,L ;going to new character line
... -
Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …
... Example, delete patterns 00 to 25 and save, enter new ... songs is going to be bars 00 to 25. And ... very handy. Using the 'copy pattern to' manually for 100 bars ... is going to be very tedious.
... of patterns, its down to 60 patterns.
Just ... -
Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... giving me the ability to send any number of ... There is an option to jump to an address so I ...
I write each BYTE to the border during the download ... so the screen has to be used to store those 256 ... a small Z80 stub to copy them to 65280, set the registers ... -
Official CSSCGC 2010 Competition ThreadDear Wossers, As 'loser' of the 2009 competition, I am now obliged to host the 2010 competition. I have created a site which will provide a hub for …
... at first I tried to make it return to basic, but for ... , meaning that returning to basic invariably caused it to crash. Much cleaner ... just to 'JP 0' ;)[/ ... , why not stack them, or copy them to some ram location? ;) -
Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
Hi Dr. Beep,
OK, knocked up the following based on your proposal. Code works but has not been reviewed/optmised yet.
[CODE]100 CLEAR 65446:
BORDER 1:
PAPER 1:
CLS :
GO SUB 260
110 REM ... -
Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
...
120 FOR f=0 TO 87: POKE 23606,f
151 IF INKEY$="" THEN GO TO 120
190 REM *------------------------*
230 REM Copy Numbers to RAM and
240 REM ... NUMS=64000: FOR A=0 TO 79: POKE NUMS+A,PEEK ... -
Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... )/256):
FOR A=1 TO 5:
FOR B=167 ... TO 247:
POKE 23606,B:< ... REM *------------------------*
170 REM Copy Numbers to RAM and
180 REM ... =65447:
FOR A=0 TO 79:
POKE NUMS+A ... -
Ebay FakesBUMS! I just spent over ?10 on a game from ebay only to find out its a fake :( well, its a fake or they had inkjet printers and photograph paper b…
... 'll need to compare it with another copy just to make sure though ... -
SaucerI'm gutted over Joffa. He was a bloomin marvellous guy. Anyway, I feel like finishing Saucer for him, so at least there will be one more game to his…
... a loading screen without having to plug my Spectrum in , loading ... ' and saving it to microdrive, like I used to in the old days ... -
Spectrum +3 doesn't workMy recently ebay purchased +3 arrived today, so I was quite excited to have one again. I plugged it in and all was well, except for a slightly worry…
... I decided to have another go to get Residos ... I finally managed to get a tzx to work, but what ... needed is for somebody to code a file selector ... to use %TAPEIN then LOAD "" command to load a tap/tzx ... .
Anyone want to write ... -
New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... basically the algorithm it uses to "inject" itself into stuff ... teenage years I considered block copy instructions to be 'too slow' : ... a treat... Managed to Convert MoreTeaVicar.sna to TAP easily... Im ... compression with RLE profiling to make sure that BYTES ... -
iPhone loading. What am I doing wrong?Hi Folks, I've converted a couple of files to MP3 to play back through an MP3>cassette adapter on my +2B. They appear to start loading, but I get …
what bitrate are you using when you convert to mp3?
I generally turn a tap or tzx to a wav file then turn them into 320kbit mono mp3's using nero
what's Otla btw?
