Commit Graph

18 Commits

Author SHA1 Message Date
tomcw
bc45812f4e Simplified and moved main-loop video update logic into Video.cpp.
Removed complex case below for:
. VideoHasRefreshed(), 'anyupdates'
. VideoCheckPage()

Detailed notes below.

---

Video updates in ContinueExecution() loop:

'anyupdates' gets set if there were any page-flip(s) in last ~17030 cycles:
	anyupdates |= VideoHasRefreshed();
ie. VideoRefreshScreen() was called outside of this loop.

If there's been a call to VideoRefreshScreen() outside of this loop,
  and then the video framebuffer gets written to, ie. VideoApparentlyDirty() returns TRUE,
then don't call VideoRefreshScreen() from this loop for 3 frames.
(If a VideoRefreshScreen() is called outside of this loop then restart the 3 frame count.)

So..
 if the game is flipping, the VideoApparentlyDirty() will return FALSE (since game writes to other framebuffer).
 if the game is not flipping, then VideoHasRefreshed() will return FALSE (since no flips occur).

Therefore this complex case above probably only arises at a boundary eg. when the game is transitioning between these 2 modes,
and so if the emulator does the very occasional screen update in this main loop, it is of no consequence.

(I guess this extra logic was to throttle video updates on very old slow machines)

---

VideoCheckPage(BOOL bForce) was called twice in main-loop:

UnexpectedPage if g_bVideoDisplayPage2 != SW_PAGE2

Once each time through the loop (ie. every 1ms), with bForce=0
	if UnexpectedPage && >500ms since last flip then VideoRefreshScreen()

Once each video frame (ie. ~17030 cycles) when not flipping, with bForce=1
	if UnexpectedPage then VideoRefreshScreen()

Basically this was all about supporting FullSpeed mode, and limiting the calls to VideoRefreshScreen().
2014-09-13 22:22:27 +01:00
michaelangel007
4b7f8aab3e Debugger 2.8.0.1 Fix #227 (Debugger)[1.25] AppleSoft symbol: COPY.FAC.TO.ARG.ROUNDED overflows into registers 2014-09-08 09:19:12 -07:00
michaelangel007
0c06520dc5 Added note about g_sCurrentDir to use g_sDebugDir 2014-09-02 08:44:21 -07:00
michaelangel007
cf7de38720 2.7.0.36 Fixed: empty command was re-triggering previous command. Example: DW 6062, // test 2014-09-01 12:47:43 -07:00
michaelangel007
d5cf2d1de2 Debugger 2.8.0.0 AppleWin 1.25 2014-08-28 16:55:16 -07:00
michaelangel007
fc5818ee34 Debugger 2.7.0.29 -- Renamed DS to ASC, fixed disassembly for ASC 2014-08-28 11:13:02 -07:00
tomcw
313e7bdcc8 TSAVE: Remap control chars to printable ones 2014-08-27 22:13:14 +01:00
michaelangel007
77aef24880 Cleanup code conventions 2014-08-25 17:12:16 -07:00
michaelangel007
1bcf5b29ee Fix TSAVE and Ctrl-PrintScreen -- convert inverse control characters to space 2014-08-25 15:35:09 -07:00
michaelangel007
24e581ba2c Added: Ctrl-PrintScreen will copy the text screen (auto detect 40/80 columns) to the clipboard. 2014-08-25 08:35:43 -07:00
michaelangel007
9d36d6d007 Added new Debugger command: TSAVE to save the text screen to a file 2014-08-23 23:08:22 -07:00
michaelangel007
eea9110649 Update History.txt with Debugger 2.7.0.23 2014-08-23 17:09:48 -07:00
michaelangel007
8119e22f08 BUGFIX: MemoryFill and MemoryMove: Fix infinite hang if target memory address ends with FFFF due to 16-bit address wrapping around to zero instead of using length.
i.e. F D000:FFFF 0
2014-08-23 12:52:14 -07:00
tomcw
cbdad2a02f Qualified all STL refs with std:: to get rid of the 'using namespace std' mismatch between the main code & debugger code 2014-08-14 20:29:01 +01:00
tomcw
c1bfb8075c Created new DebugDefs.h for memory defs 2014-08-14 18:14:39 +01:00
tomcw
6a26a95487 PCH refactor: remove non-system headers from stdafx.h 2014-08-13 21:30:35 +01:00
michaelangel007
9ded7f0926 Cleanup: Removed unused variable: g_bResetTiming 2014-07-17 19:52:56 -07:00
tomcw
d591dd006b Remove the top-level AppleWin folder 2014-05-23 22:59:02 +01:00