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Add v0.7 source

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TomW 2013-04-21 14:54:35 +01:00
commit 3c253c2cf8
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19
src/ppi.c Normal file
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@ -0,0 +1,19 @@
/*IBM 5150 cassette nonsense
Calls F979 twice
Expects CX to be nonzero, BX >$410 and <$540
CX is loops between bit 4 of $62 changing
BX is timer difference between calls
*/
#include "ibm.h"
#include "pit.h"
#include "plat-keyboard.h"
#include "plat-mouse.h"
void ppi_reset()
{
ppi.pa=0x0;//0x1D;
ppi.pb=0x40;
}