GINGRICH-T@osu-20.ircc.ohio-state.edu (Tyler S Gingrich) (07/02/90)
I have a Mega-4 and I am no longer able to choose the 'Blitter' option from my menu or from NeoDesk (2.05). Does the Mega detect the presence of a blitter automattically and then add it to the menu?? If so, is my blitter 'toasted'?? If my blitter chip is 'toast' how do I go about getting a replacement? Or, should I not worry about the blitter & just purchase Turbo/Quick ST?? Thanks in Advance Tyler
csbrod@medusa.informatik.uni-erlangen.de (Claus Brod ) (07/03/90)
GINGRICH-T@osu-20.ircc.ohio-state.edu (Tyler S Gingrich) writes: >I have a Mega-4 and I am no longer able to choose the 'Blitter' option from >my menu or from NeoDesk (2.05). >Does the Mega detect the presence of a blitter automattically and then >add it to the menu?? Exactly. >If so, is my blitter 'toasted'?? If the blitter option showed up before, yes. If not, you probably don't have any blitter. You might test this using the Xbios Blitmode function: if (Blitmode(-1) & 2) puts("Yep, there is one."); else puts("No blitter, no cry."); ---------------------------------------------------------------------- Claus Brod, Am Felsenkeller 2, Things. Take. Time. D-8772 Marktheidenfeld, West Germany (Piet Hein) csbrod@medusa.informatik.uni-erlangen.de ----------------------------------------------------------------------
ALBERT_DAYES@bdt.UUCP (07/05/90)
Do you have suggestions on books or articles or even better source code that can read 1024 byte sectors with 5 sectors per track??
jgp@fctunl.rccn.pt (Jose Goncalo Pedro) (07/06/90)
In article <3660@bdt.UUCP> ALBERT_DAYES@bdt.UUCP writes: Do you have suggestions on books or articles or even better source code that can read 1024 byte sectors with 5 sectors per track?? Well, I think that, with the proper information in the boot sector (ie, saying it has 1024 bytes/sector, 1 or 2 sectors/cluster, 5 sectors/track, 80/82 tracks, 2 disk sides, 800/820 sectors), TOS will read the disk quite happily. It has got the required info in the boot sector, so while not use it? -jp -- --- Jose Goncalo Pedro BITNET/Internet: jgp@fctunl.rccn.pt +---------------------------------+ UUCP: jgp@unl.uucp | Departamento de Informatica +----------------------------------+ | Universidade Nova de Lisboa 2825 Monte Caparica, PORTUGAL | +--------------------------------------------------------------------+
SYSPMZT@gecrdvm1.crd.ge.com (05/19/91)
I must have missed this one (probably about a thousand times), but my new
1040 STe has a 'Blitter' entry on the option screen, which was unchecked
when I booted with the ST language disk. I set it on (saving my preferences),
and noticed that the graphics did indeed speed up considerably. Can someone
explain what the blitter is all about, and why I need to turn it on? My
impression was that the blitter was a constant piece of the environment; that
is, that it was in the hardware and would always affect the graphics manager.
Thanks,
Phil Z