Apple-2-Tools/apple2pi
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Give GPCLK chance to settle before talking to Apple II

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David Schmenk 2013-09-23 13:57:21 -07:00
parent 662bb16adb
commit 90ce319e53
1 changed files with 8 additions and 7 deletions
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15
src/a2pid.c
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@ -730,12 +730,6 @@ void main(int argc, char **argv)
evrely.type = EV_REL; evrely.type = EV_REL;
evrely.code = REL_Y; evrely.code = REL_Y;
evsync.type = EV_SYN; evsync.type = EV_SYN;
#if defined(SETSERCLK) && defined(__ARMEL__)
/*
* Initialize ACIA clock for Apple II Pi card
*/
gpclk(271); /* divisor for ~1.8 MHz => (500/271) MHz */
#endif
/* /*
* Open serial port. * Open serial port.
*/ */
@ -753,7 +747,14 @@ void main(int argc, char **argv)
newtio.c_cc[VTIME] = 0; /* inter-character timer unused */ newtio.c_cc[VTIME] = 0; /* inter-character timer unused */
newtio.c_cc[VMIN] = 1; /* blocking read until 1 char received */ newtio.c_cc[VMIN] = 1; /* blocking read until 1 char received */
tcsetattr(a2fd, TCSANOW, &newtio); tcsetattr(a2fd, TCSANOW, &newtio);
prlog("a2pid: Waiting...\n"); prlog("a2pid: Waiting to connect to Apple II...\n");
#if defined(SETSERCLK) && defined(__ARMEL__)
/*
* Initialize ACIA clock for Apple II Pi card
*/
gpclk(271); /* divisor for ~1.8 MHz => (500/271) MHz */
sleep(1); /* give clock chance to settle down */
#endif
iopkt[0] = 0x80; /* request re-sync if Apple II already running */ iopkt[0] = 0x80; /* request re-sync if Apple II already running */
write(a2fd, iopkt, 1); write(a2fd, iopkt, 1);
if (read(a2fd, iopkt, 1) == 1) if (read(a2fd, iopkt, 1) == 1)