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author angelosa <lordkale4@gmail.com>2020-04-25 03:53:06 +0200
committer angelosa <lordkale4@gmail.com>2020-04-25 03:53:06 +0200
commit4a6bf4e1c0b994919e4641b7210ba1fe59ea05fc (patch)
tree3a3ced1bf3a637e6bdf710cca08db82b0548f09d
parent737497d5539b16d835c44c751ae5abafc8455488 (diff)
stvcd.cpp: move note on top, make some basic QA (nw)
-rw-r--r--src/devices/machine/stvcd.cpp21
1 files changed, 17 insertions, 4 deletions
diff --git a/src/devices/machine/stvcd.cpp b/src/devices/machine/stvcd.cpp
index 267e981621c..e5ed71a382c 100644
--- a/src/devices/machine/stvcd.cpp
+++ b/src/devices/machine/stvcd.cpp
@@ -21,6 +21,23 @@
LBA except it counts starting at absolute zero instead of
the first sector (00:02:00 in MSF format).
+============================================================================
+TODO:
+- finish off code cleanups (repetition etc.);
+- improve debugging;
+- fix DRQ behaviour, several softwares gets to the point of filling
+ the buffer (and probably don't know what to do);
+- fix startup, cfr. cdblock branch;
+- merge common components with lle version via superclass (i.e. comms);
+- derive MPEG commands in a subdevice;
+
+DASM notes:
+* whizzj:
+- wpset 0x605e4b8,4,w,wpdata==0x4e
+ (second trigger)
+- write to 0x605e498 -> 1
+ (PUBLISH.CPK tries to playback a few frames then keeps looping)
+
***************************************************************************/
#include "emu.h"
@@ -487,10 +504,6 @@ void stvcd_device::cr_standard_return(uint16_t cur_status)
}
else
{
- /*
- TODO:
- - Whizz: wpset 0x608f030,4,w,wpdata==0x100&&pc!=0x6040006
- */
cr1 = cur_status | (playtype << 7) | 0x00 | (cdda_repeat_count & 0xf); //options << 4 | repeat & 0xf
cr2 = (cur_track == 0xff) ? 0xffff : ((sega_cdrom_get_adr_control(cdrom, cur_track)<<8) | (cdrom_get_track(cdrom, cd_curfad-150)+1));
cr3 = (get_track_index(cd_curfad)<<8) | (cd_curfad>>16); //index & 0xff00