SMVDD.SYS: Difference between revisions
Created page with "This driver provides DOS and WIN-OS/2 digital video support. If you do not use DOS or WIN-OS/2 that require digital video support you can remove this driver from CONFIG.SYS." |
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This driver provides DOS and WIN-OS/2 digital video support. If you do not use DOS or WIN-OS/2 that require digital video support you can remove this driver from CONFIG.SYS. | This driver provides DOS and WIN-OS/2 digital video support. If you do not use DOS or WIN-OS/2 that require digital video support you can remove this driver from CONFIG.SYS. | ||
One of the features of SMVDD.SYS is (or rather: was) to provide a function to map a physical address (in this case: the screen aperture) to a linear address valid in the caller's address space so that you can access the screen and write to it like you would write to memory. This functionality is also provided by SCREEN01.SYS and since SCREEN01.SYS is contained in any OS/2 system up to present day | |||
Revision as of 14:09, 2 June 2023
This driver provides DOS and WIN-OS/2 digital video support. If you do not use DOS or WIN-OS/2 that require digital video support you can remove this driver from CONFIG.SYS.
One of the features of SMVDD.SYS is (or rather: was) to provide a function to map a physical address (in this case: the screen aperture) to a linear address valid in the caller's address space so that you can access the screen and write to it like you would write to memory. This functionality is also provided by SCREEN01.SYS and since SCREEN01.SYS is contained in any OS/2 system up to present day