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| SamCoupé palette support |
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Posted by: nitrofurano - 2011-12-21, 04:26 AM - Forum: Library
- Replies (3)
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Some people here may know that zx-spectrum stuff can run on sam coupé machines, and these stuff can write on its palette as well.
This is based on the library i added to support ULAplus, and did the enough changes for the SamCoupé - i didn't test it yet.
There are differences - while ULAplus has 64 palette colours from 256, SamCoupé has 16 from 128, and arranged in a different way. And anyway, SamCoupé palette seems to be simpler to use, since there are no need for tricky subroutines like "ulaplusattr(ikv as ubyte,pav as ubyte)"
Besides the ULAplus version, i don't know or i have no way to get the palette values back, or test if the machine uses SamCoupé palette
I didn't test this code yet - SimCoupé seems to be a good emulator for testing it:
library/samcoupepalette.bas
Code: dim tmpv as uinteger
sub samcoupepalette(clv as ubyte, vlv as ubyte):
out (clv*256)bor 248,vlv:pause 1
end sub
function samcoupehexcolour(hxcv as uinteger):
tmpv=(hxcv band 4)/4
tmpv=tmpv bor ((hxcv band 64)/16)
tmpv=tmpv bor ((hxcv band 8)*2)
tmpv=tmpv bor ((hxcv band 128)/2)
tmpv=tmpv bor ((hxcv band 32)/4)
hxcv=int(hxcv/256)
tmpv=tmpv bor ((hxcv band 64)/16)
tmpv=tmpv bor ((hxcv band 8)*2)
return tmpv
end function
the information on the code above is based on the reply i got from Velesoft at <!-- m --><a class="postlink" href="http://www.worldofspectrum.org/forums/showthread.php?p=583022#post583022">http://www.worldofspectrum.org/forums/s ... post583022</a><!-- m -->
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| Used to compile? (*solved*) |
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Posted by: britlion - 2011-12-08, 03:08 AM - Forum: Bug Reports
- Replies (7)
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I think this used to work. Now it just gets a blank screen?
Based on HRPrintFast - as attached in the forum.
zxb --version
zxb 1.2.8-s758
<!-- m --><a class="postlink" href="http://dl.dropbox.com/u/4903664/HRPrintFast.zip">http://dl.dropbox.com/u/4903664/HRPrintFast.zip</a><!-- m -->
(I can't seem to attach this file to the forum either: Could not upload attachment to ./files/292_dbf5619d9a32ca38360a971b2a2970cd.)
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| scroll.bas |
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Posted by: britlion - 2011-12-07, 11:27 PM - Forum: Bug Reports
- Replies (9)
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Was thinking of doing some scroll routines. I see there are some useful ones in scroll.bas in the library.
However, there appears to be a left, right and another left in there - no up and down!
sub fastcall ScrollRight
sub fastcall ScrollLeft
sub fastcall ScrollLeft
two also begin a bit strangely - loading the byte at (screenaddress) twice?
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| Window Scroll Up |
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Posted by: britlion - 2011-12-07, 08:20 PM - Forum: How-To & Tutorials
- No Replies
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For what it's worth, I added a window up scroll routine to the library. Allows text areas to be scrolled up as they fill up, without messing up other areas of the screen.
<!-- m --><a class="postlink" href="http://www.boriel.com/wiki/en/index.php/ZX_BASIC:WindowScrollUp">http://www.boriel.com/wiki/en/index.php ... owScrollUp</a><!-- m -->
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| Random Numbers |
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Posted by: britlion - 2011-12-07, 02:46 PM - Forum: Help & Support
- Replies (7)
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Boriel, I know the compiler's pseudorandom number generator is better than the one in the ROM.
Seen this:
<!-- m --><a class="postlink" href="http://www.worldofspectrum.org/forums/showthread.php?t=23070">http://www.worldofspectrum.org/forums/s ... hp?t=23070</a><!-- m -->
?
If it's smaller, faster or better, you might want to consider 
For posterity, an 8 bit result with 32 bit seed that passes diehard test for 32 bit entropy:
Code: rnd ld hl,0xA280 ; xz -> yw
ld de,0xC0DE ; yw -> zt
ld (rnd+1),de ; x = y, z = w
ld a,e ; w = w ^ ( w << 3 )
add a,a
add a,a
add a,a
xor e
ld e,a
ld a,h ; t = x ^ (x << 1)
add a,a
xor h
ld d,a
rra ; t = t ^ (t >> 1) ^ w
xor d
xor e
ld h,l ; y = z
ld l,a ; w = t
ld (rnd+4),hl
ret
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| How to read print flags? |
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Posted by: britlion - 2011-12-07, 12:03 PM - Forum: Help & Support
- No Replies
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Anyone got a reference for how to read current ink, paper bright flash and inverse from pflags?
How about bold and italics - where can I find the current status of those?
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| Function Overloading |
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Posted by: britlion - 2011-12-02, 04:02 PM - Forum: Wishlist
- Replies (3)
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It would be nice if overloading was supported - functions and subroutines of the same name with different parameters.
For example:
change(ubyte ink, ubyte paper) could change the attributes for the whole screen to a specific ink/paper value without clearing it.
change() sets them to the current permanent colours...
change (ubyte ink, ubyte paper, ubyte start_row, ubyte end_row) could change just part of the screen...
And so on and so forth.
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| Librarys corrections to do |
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Posted by: LCD - 2011-11-18, 12:31 AM - Forum: Documentation
- Replies (2)
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Hi Boriel, I currently make the ZXBC library helper for BorIDE and found some errors:
LCase.bas
Quote:----------------------------------------------------------------
' function LCase(s as String)
'
' Parameters:
' s: Input String
'
' Returns:
' A copy of S converted to UpperCase
' ----------------------------------------------------------------
It should be:
Quote:' Returns:
' A copy of S converted to LowerCase
Next what I do not understand: in Key Library you wrote about scancodes such as:
Quote:SC_ENTER or SC_SPACE
But the key definitions are more like:
Quote:KEYENTER or KEYSPACE
Other:
In the Scroll Lib the SUB for scrolling up and down is named in both cases ScrollLeft. And it is written scrolling by pyxel, which is wrong and should be called pixel (PIcture ELement).
Writing Docs for the Fourspriter will be a pain... But also the core commands await me.
FIY: I changed the help system. Now it can display a HTML-Page, which includes a newly designed BorIDE Logo and styled text.
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| speed of compilation |
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Posted by: slenkar - 2011-11-10, 04:11 PM - Forum: Core
- Replies (17)
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do you think the compilation of speccy games would go faster if the compiler was written in a faster language like java?
btw yacc is available in java
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