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[Localizations, Games, Apps, Docs / Re: CC65 and the PCE]

I tried to load your font with pceas and it works fine .

Try this for loading your font:
...
tia gfx4BPP_font , $0002 , $800

I keep forgetting I'm not coding straight 6502 and have access to things like this; thanks
Though I did have to change $800 to $800*2 since the VRAM expects word values.

Your vram_clearBAT code isn't correct ... you're using Y without initializing it.

aha, so I was getting by on pure luck. ;) I figured that routine was broken somehow, due to being a late night coding exercise.

Your font loading code isn't correct ... you're using Y without initializing it (because font_loadSize is $0800).

ah, there we go, that would be it. guess I wasn't running the branch code properly in my head

Thanks for your help, elmer and touko; this weekend is going to be a lot of fun.

here's the fixed example, in case anyone wants it:
http://www.ajworld.net/pcedev/pce-example01_ca65-fixed.zip
other comments/critique are welcome

[Localizations, Games, Apps, Docs / Re: CC65 and the PCE]

PS:Your source code is very clean 

thanks, that was one of my goals

you set your VRAM position badly

you did it like that:
st0 #VDCREG_MAWR
st1 #<$0804
st2 #>$0804

It must be:
st0 #VDCREG_MAWR
st1 #<($0800 >> 4)
st2 #>($0800 >> 4)

I just tried this out in mednafen, and this seems wrong... the VRAM looks like this:

dropboxusercontent.com/u/6447287/pcedev/800_lsr4-vram.png

All VRAM read/write addresses must be (my_address >> 4), and for sprite patterns (my_address >> 5)

That sounds right for the BAT and SATB areas, but I'm having trouble with just getting the tiles into VRAM properly...

if I just use $0800 as the VRAM source address, a la

st0 #VDCREG_MAWR
st1 #<$0800
st2 #>$0800

this is what I get in the VRAM viewer:

dropboxusercontent.com/u/6447287/pcedev/800_regular-vram.png

(edit)
and for reference, here's what the VRAM looks like when I load into $0804:

dropboxusercontent.com/u/6447287/pcedev/804_dumbluck-vram.png

[Localizations, Games, Apps, Docs / Re: CC65 and the PCE]

alright, I've been trying to get the hang of doing PCE development with ca65 and ld65...

Managed to load a font and write to BAT, though I've been having some trouble dealing with VRAM locations...



rom and source code is available here; requires gnu make and a recent ca65/ld65 set.

With relation to VRAM troubles, I have to offset the location the file gets loaded by 4 (it was previously 3 before I changed how I was calculating the VRAM address)... not sure how to go about fixing this, so I'm hoping one of the PCE gurus will check it out and lend me a hand :p