🚀 go-pugleaf

In article: <4991431wnr@tangon.demon.co.uk>  woody <woody@tangon.demon.co.uk> writes:
> <john@johnpb.demon.co.uk> writes:
> > 
> > I attempted to install a cover disk (SU27 Flanker) on my son's 486DX-66.
> > 
> > The install was aborted by a message that the program could not locate a
> > "VESA" driver.
> > 
> > I am not sure what this means.     Could someone explain to me what a
> > VESA driver is and where I can get one from?
> >
> 
> VESA (a.k.a. VESA local bus or VLB) is a high speed connection between the 
> processor and the interface cards, here most probably the video.  The normal 
> ISA or enhanced ISA (EISA) expansion sockets into which the video and hard/floppy 
> disc/serial/parallel port cards are plugged (large black straight sockets on the 
> motherboard, usually six to eight in number) are limited to 8MHz (8m ticks per 
> second) and thus limit data throughput.  For faster communications an additional 
> socket of much narrower and closer pins was added to the tail end of up to three of 
> the ISA connectors, and the data on these ran/runs at up to processor speed - in 
> your case 33MHz as the processor clock doubles internally, hence the 2-66.  The 
> VLB sockets, due to loading, were limited to 3 but in most cases there were 
> problems if more than two were used at once.  Your CDR is telling you it needs a 
> VLB card, probably video, to be able to get the throughput (and thus video 
> speed/number of colours) and you don't have one.  Buy one now (a Cirrus 5429 or 
> compatible is a good bet) as VLB has been superceded by PCI which does away 
> with both VLB abd ISA sockets in favour of a new and smaller connector, so 
> supplies are getting short as they are now only made in small quatities if at all.
Wrong!. VESA, is an acronym, for a group in the US, setting various 'standards'
for the PC marketplace. One such standard is VLB (VESA Local Bus), but
another, is for VESA compliant video drivers, that allow a program to take
advantage of some features of cards, without having to have specific drivers
for each card. Many modern cards, contain the VESA driver in their own ROM,
but older cards, require the VESA driver to be loaded as a TSR program,
before it can be used. This is what the program is saying. As has allready been
posted, there is a 'universal' VESA driver available for download (UNIVBE),
but it might also be worth having a look on any 'driver' disks you may have
for the video card, since these often contain a VESA driver.

Good Luck

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