Misc/abrash-black-book
Watch
1
0
Fork
You've already forked abrash-black-book
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Change bold code snippets to inline code blocks

Browse source
This commit is contained in:
James Gregory 2013-12-31 17:12:29 +11:00
commit 3c76d884ef
185 changed files with 1772 additions and 1772 deletions
Download patch file Download diff file Expand all files Collapse all files

8
34-01.md
View file

@ -82,12 +82,12 @@ least reliable and capable in that mode, as we'll see next.
Here's the problem with loading the entire DAC repeatedly: The DAC
contains 256 color storage locations, each loaded via either 3 or 4
**OUT** instructions (more on that next), so at least 768 **OUT**s are
needed to load the entire DAC. That many **OUT**s take a considerable
amount of time, all the more so because **OUT**s are painfully slow on
`OUT` instructions (more on that next), so at least 768 `OUT`s are
needed to load the entire DAC. That many `OUT`s take a considerable
amount of time, all the more so because `OUT`s are painfully slow on
486s and Pentiums, and because the DAC is frequently on the ISA bus
(although VLB and PCI are increasingly common), where wait states are
inserted in fast computers. In an 8 MHz AT, 768 **OUT**s alone would
inserted in fast computers. In an 8 MHz AT, 768 `OUT`s alone would
take 288 microseconds, and the data loading and looping that are also
required would take in the ballpark of 1,800 microseconds more, for a
minimum of 2 milliseconds total.