[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: 64/65 Cycle Rule?

Subject: Re: 64/65 Cycle Rule?
From: Sheldon Simms <sheldonsimms@yahoo.com>
Date: Sun, 24 Aug 2003 23:59:13 -0400
Newsgroups: comp.sys.apple2
Organization: Posted via Supernews, http://www.supernews.com
References: <7tCdnXV31LzuhNWiRTvUrg@texas.net> <pan.2003.08.24.04.13.18.864830@yahoo.com> <qhoeyeaevl.fsf@ruckus.brouhaha.com>
User-agent: Pan/0.14.0.90 (Face-down once more on the greasy boardwalk of love)
Xref: archiver1.google.com comp.sys.apple2:34378

On Sun, 24 Aug 2003 15:07:42 -0700, Eric Smith wrote:

> Sheldon Simms <sheldonsimms@yahoo.com> writes:
>> I find the main slowdown for my emulator is the double-indirection on
>> all memory references required(*) to simulate the bank-switching
>> capabilites of the IIe.
>> 
>> (*) I have just recently thought of an alternate approach that may
>> remove one level of indirection
> 
> Can't you manipulate the page tables to effect bank switching?
> Under Linux this should be possible with mmap(); I think there's some
> equivalent in Win32.

Hmmm... I dunno. I'll try and find out eventually.

References:
- 64/65 Cycle Rule?
  - From: "Bryan Parkoff" <spam>
- Re: 64/65 Cycle Rule?
  - From: Sheldon Simms <sheldonsimms@yahoo.com>
- Re: 64/65 Cycle Rule?
  - From: Eric Smith <eric-no-spam-for-me@brouhaha.com>

Prev by Date: Re: IIGS Drive Questions
Next by Date: Re: Speed check
Previous by thread: Re: 64/65 Cycle Rule?
Next by thread: Re: 64/65 Cycle Rule?
Index(es):
- Date
- Thread