Retro/pcjs
Watch
1
0
Fork
You've already forked pcjs
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Updated RAM component with TODO regarding 16Kb alignment

Browse source
This commit is contained in:
Jeff Parsons 2016-11-28 14:40:57 -08:00 • committed by Jeff Parsons
commit c0a2a7c39a
1 changed files with 5 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
modules/pdp11/lib/ram.js
View file

@ -57,6 +57,11 @@ if (NODE) {
* NOTE: We make a note of the specified size, but no memory is initially allocated for the RAM until the * NOTE: We make a note of the specified size, but no memory is initially allocated for the RAM until the
* Computer component calls powerUp(). * Computer component calls powerUp().
* *
* TODO: I seem to recall a PDP-11 diagnostic that failed if total RAM wasn't a multiple of 16Kb; our Bus
* component defaults to a block size that matches BusPDP11.IOPAGE_LENGTH (ie, 8Kb), and we even allow partial
* block allocations, so internally, we don't have that requirement, but for better compatibility, perhaps we
* should display a non-fatal warning if addr or size don't fall on 16Kb boundaries.
*
* @constructor * @constructor
* @extends Component * @extends Component
* @param {Object} parmsRAM * @param {Object} parmsRAM