BMP 2 UDG for ZXPand with UDG Board
Re: BMP 2 UDG for ZXPand with UDG Board
All sorted Greg although shameful embarrassment means I'm not revealing how.
Last edited by Moggy on Wed Dec 20, 2017 10:38 pm, edited 1 time in total.
Re: BMP 2 UDG for ZXPand with UDG Board
Just an observation.
Saved some BMPs resized via windows paint (successfully) but when it comes to displaying them on the zeddy they are upside down!?
Yes I know the answer is to flip them before saving but was just curious as to why?
Saved some BMPs resized via windows paint (successfully) but when it comes to displaying them on the zeddy they are upside down!?
Yes I know the answer is to flip them before saving but was just curious as to why?
Re: BMP 2 UDG for ZXPand with UDG Board
That has always been the case, I don't know why, see Wilf Rigter's article at
http://www.user.dccnet.com/wrigter/inde ... /BMP2P.htm
Regards;
Greg
Re: BMP 2 UDG for ZXPand with UDG Board
No, not always, but usuallyGCHarder wrote: ↑Wed Dec 20, 2017 9:34 pmThat has always been the case, I don't know why, see Wilf Rigter's article at
http://www.user.dccnet.com/wrigter/inde ... /BMP2P.htm
Regards;
Greg
There is a bit in the header, which indicates, whether it is up or down.
I once wrote a program to convert Zeddy Hires to BMP and set this bit different than usually. Thus I did not need to mirror the HIRES picture, but the PC programs (Firefox or similar) show the BMP correctly even when it is not upside down
Siggi
My ZX81 web-server: online since 2007, running since dec. 2020 using ZeddyNet hardware
http://zx81.ddns.net/ZxTeaM
http://zx81.ddns.net/ZxTeaM
Re: BMP 2 UDG for ZXPand with UDG Board
I have tried your great software on real ZX81 and I can happily report that it works with:
- UDG 4 ZXpand/ZXblast with set jumper to CHR$128
- ZXblast
- REM out line 40 LOAD "BMPS/"+B$+".BMP;32768"
- REM out line 9994 LLIST "M=L"
- When loading press L to load.
- Enter ZXblast loader with Double-Shift-L.
- Select BMP and append ":32768" and N/L to load.
- Press N/L back at the filename prompt.