| Title: | DIGITAL UNIX (FORMERLY KNOWN AS DEC OSF/1) |
| Notice: | Welcome to the Digital UNIX Conference |
| Moderator: | SMURF::DENHAM |
| Created: | Thu Mar 16 1995 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 10068 |
| Total number of notes: | 35879 |
A partner is porting to Digital Unix Alpha. They have own design hardware (ISA I/O card), and would like to know how to access memory and I/O ports on this ISA card. Does it need a device driver, or can something like mmap() work? thanks, Ian Chamberlin
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 9295.1 | COL01::LINNARTZ | Wed Mar 26 1997 10:23 | 12 | ||
Ian,
point them to the device driver documentation, start with
tutorial and guide to write EISA device driver.
to mmap their device, they have to apply the xx_mmap function
in their driver, which if you access physical hardware requires
some knowledge about our I/O layout.
I don't see a way to mmap directly, as they have no device entry
point to open and by this won't have a fd to supply to the mmap system
call.
Pit
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| 9295.2 | Thanks, I thought a driver was the only way to go. | RDGENG::CHAMBERLIN | Danger! Do not Reverse Polarity | Wed Mar 26 1997 10:38 | 0 |