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Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... , I mean only the method. LDI again with corrections for the ... -
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
Already posted, but there is no point in it... It can't be improved, only with replacing LDIR with number of LDI, but this is not "improvement". Just wanted to have other codes of the same procedure, but as I realized now, no one is interested in it. -
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... )
ld de, (lines)
ldi x32
ld hl, (lines ... /> ld de, (lines+2)
ldi x32
...
repeat for ... /> ld de, (lines+380)
ldi x32
... rest of ... -
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... )
ld de, (lines)
ldi x32
ld hl, (lines ... /> ld de, (lines+2)
ldi x32
...
repeat for ... /> ld de, (lines+380)
ldi x32
... rest of ... -
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
...
ld de, #4000
ldi x 32
hl, #4200 ...
ld de, #4100
ldi x 32
...
[/code ... -
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... to use a amount of LDI commands (for example 32 of ... -
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... )
ld de, #4000
ldi x 32
ld hl ... )
ld de, #4100
ldi x 32
...
[/code ...
ld de, #4000
ldi x 32
pop hl ...
ld de, #4100
ldi x 32
...
[/code ... -
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... get clobbered by the memory contention in the screen ram which ... 16K will be clobbered by contention repeatedly, if it's repeatedly ...Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... ;308952]I can solve the contention issue by paging in shadow ... /> I wouldn't worry about contention too much though, so long ...Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... ;308952]I can solve the contention issue by paging in shadow ... /> I wouldn't worry about contention too much though, so long ...Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... . For a full description of contention, I'd recommend that people ...Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... . For a full description of contention, I'd recommend that people ...Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…
... delta player without LDIR as LDI cannot be controled in such ...Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…
... in some comments about "the LDI jump table trick", so it ... a table of (say) 128 LDI instructions (or actually INI instructions ...Which computer is most similar to Zx Spectrum?I have wondered recently wihch other 8-bit computer is most of all similar to Zx Spectrum. I mean similar graphics, similar gameplay, similar program…
... the CPU; this avoids memory contention but stops you from directly ...what were the things the Speccy architecture was good for?I don't know a hell of a lot about all the different computers hardware and I wanted to know if the way the Spectrum was built lent itself to certain…
... this is exacerbated by memory contention between it and the video ...Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…
... two frames ago.
The LDI Table is a nice idea ... it needs more than 255 LDI commands, as BC Byte count ... reduce the number of needed LDI (or INI for reading from ...what were the things the Speccy architecture was good for?I don't know a hell of a lot about all the different computers hardware and I wanted to know if the way the Spectrum was built lent itself to certain…
... , it loses more to memory contention so that tends to even ...what were the things the Speccy architecture was good for?I don't know a hell of a lot about all the different computers hardware and I wanted to know if the way the Spectrum was built lent itself to certain…
... faster, having no screen memory contention combined with the 6502's ...RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…
... it wasn't for memory contention.[/quote]
Don't you ...RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…
... on a real Spectrum, memory contention eats up too much time ...Fuse for Mac OS X beta releasesA beta version of Fuse for Mac OS X has been released at the dedicated sourceforge project: [url]http://sourceforge.net/projects/fuse-for-macosx/[/u…
... (but probably not perfect) TS2068 contention (Philip Kendall).
[*] Various other ...ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... will get hit by memory contention which will tend to distort ...ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... an example of how bad contention is, try using the Magical ... sounds awful in Spin with contention turned on though; music for ... timing loops to take memory contention into account. That's probably ...ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... sounds awful in Spin with contention turned on though; music for ... timing loops to take memory contention into account. That's probably ...Machine code help pls: LDI example[deleted]
... =15, BC=24
LDI copies the contents of address ...Machine code help pls: LDI example[deleted]
SkoolKid is correct, except for his first sentence :-)
Yes, it is a typo. The end result of an LDI will indeed be DE=10, HL=16 - [b]not[/b] HL=10, DE=16 - as per the reasoning you've both given.