CT65545

QNX Newsgroups (Archives) qdn.public.ddk.graphics
1

hi all

i’m starting to modify devg-chips_hiqv source to make a driver for CT65545
only chipset for ISA bus, but someone know if there is something just done ?


bye
donCiccio

2

Hi,

There is no driver done by QNX for the C&T65545 for QNX6. I don’t
know of any third party driver, but can’t say for sure.

Regards,

Joe

donCiccio <donCiccio@hotmail.com> wrote:

hi all

i’m starting to modify devg-chips_hiqv source to make a driver for CT65545
only chipset for ISA bus, but someone know if there is something just done ?



bye
donCiccio

3

“Hardware Support Account” <hw@qnx.com> ha scritto nel messaggio
news:abuk18$7pv$1@nntp.qnx.com…

Hi,

There is no driver done by QNX for the C&T65545 for QNX6. I don’t
know of any third party driver, but can’t say for sure.

when i finish (probably the next friday), could you check my code?

i can test it on a device, and for now it’s working.
you can tell me what is better do and what not, to give my driver the right
behavior.


Regards,
donCiccio

4

Hi Don,

are you by any chance using the RTD PC104 cm112 utility card
(ide/svga/…)? If so I am in the same situation. I was told that I
need to modify the driver from loading the video bios into a linear
memory segment since the ISA bus only had 22 address bits (i think - i
could be wrong) Anyway if you are working the same issue I would like
to work on it with you - two heads are better than one.

Erick

–
Erick Oberstar

Mechatronics Lab Manager
University of Wisconsin - Madison
http://mechatronics.me.wisc.edu

On Thu, 16 May 2002 20:31:18 +0200, “donCiccio”
<donCiccio@hotmail.com> wrote:

“Hardware Support Account” <> hw@qnx.com> > ha scritto nel messaggio
news:abuk18$7pv$> 1@nntp.qnx.com> …
Hi,

There is no driver done by QNX for the C&T65545 for QNX6. I don’t
know of any third party driver, but can’t say for sure.


when i finish (probably the next friday), could you check my code?

i can test it on a device, and for now it’s working.
you can tell me what is better do and what not, to give my driver the right
behavior.


Regards,
donCiccio

5

<mechlab@nospam.me.wisc.edu> ha scritto nel messaggio
news:3ce4fafb.62850125@inn.qnx.com…

Hi Don,

are you by any chance using the RTD PC104 cm112 utility card
(ide/svga/…)? If so I am in the same situation. I was told that I
need to modify the driver from loading the video bios into a linear
memory segment since the ISA bus only had 22 address bits (i think - i
could be wrong) Anyway if you are working the same issue I would like
to work on it with you - two heads are better than one.

Erick

OK Erick, i’m ready to give you what i have wrote, but the next week,
because i have all at work.

no, i don’t use your video card, my card is also a PC104 vga on ISA bus, but
it is an italian product.

my card work fine with vga and svga device driver, but i need hardware
acceleration, so i modify svga driver.

for now i done only this feature:

  • enable linear adressing on the chip, in F00000 (you must enable the memory
    hole in this location, into the PC bios, if you have 16Mbyte memory or
    above).

  • changed memory allocation for the main surface, mapping it directly to
    video memory, so the FFB can operate directly, no more need bank switch and
    region upate. In svga driver, tha bank switch is done via video bios, this
    cause an increment in interrupt latency when bank switch occour, probably is
    not a problem for you, but i need stable response for my int 0 handler.

  • add hardware acceleration to draw_span, draw_rect, blit, core functions.

what to do:

  • pattern handling.

  • draw_bitmap core function.

  • context function (if they are needed)

  • hardware cursor (but i don’t need cursor, so probably i never add this)

send me your correct email, i will send you my code on monday evening or
tuesday.


bye
donCiccio