artik-wroc wrote:How can you bypass the VGA BIOS interrupt call (INT10H) from the Atari level? I'm too weak
ctirad wrote:Cziets, you are awesome. I have to check it on my Mulltiboard and Panther2.
Is there a way to enable some debug info? I'm going to start emutos from the floppy (image).
Code: Select all
/* #define ENABLE_KDEBUG */
artik-wroc wrote:Registers on the ISA side are one thing, but what about Atari (VDI)?
Do you know VGA drivers (sources) on Atari? I found only STGA.
artik-wroc wrote:It's the equivalent of the Standard VGA driver, known in Windows.
Why this mode? Because this is a sensible resolution (320x200 ? No).
The standard VGA modes are on almost every ISA card, including those for which there are no drivers eg. Trident.
Cyprian wrote:Stupid question, what is the difference between Idek's drivers and STGA drivers? Both have VDI drivers for ET4000.
czietz wrote: Where on Till's page do you see the source code to the VDI?
czietz wrote:Cyprian wrote:Stupid question, what is the difference between Idek's drivers and STGA drivers? Both have VDI drivers for ET4000.
Well, they are different implementations of a similar thing -- NVDI/ET4000 would be yet another VDI driver for ET4000. Idek has drivers for different adapters, i.e. different base addresses: MEGA4000, Volksfarben and Nova; while the STGA driver is of course meant for STGA only.
BTW: Where on Till's page do you see the source code to the VDI? STGA_SW (where SW = schwarz-weiß = black & white) is just a simple configuration program for a monochrome mode that mostly uses TOS's VDI. That's comparable to what I added to EmuTOS; it's not a fully-fledged VDI driver for the ET4000. In particular, it won't help you implementing anything using color modes.
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