source: trunk/libs/newlib/src/libgloss/sparc/erc32-io.c @ 546

Last change on this file since 546 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 662 bytes
Line 
1#define USE_PORT_A
2
3#define RXADATA (int *) 0x01F800E0
4#define RXBDATA (int *) 0x01F800E4
5#define RXSTAT (int *) 0x01F800E8
6
7void
8outbyte (int c)
9{
10  volatile int *rxstat;
11  volatile int *rxadata;
12  int rxmask;
13
14  rxstat = RXSTAT;
15#ifdef USE_PORT_A
16  rxadata = RXADATA;
17  rxmask = 6;
18#else
19  rxadata = RXBDATA;
20  rxmask = 0x60000;
21#endif
22
23  while ((*rxstat & rxmask) == 0);
24
25  *rxadata = c;
26}
27
28int
29inbyte (void)
30{
31  volatile int *rxstat;
32  volatile int *rxadata;
33  int rxmask;
34
35  rxstat = RXSTAT;
36#ifdef USE_PORT_A
37  rxadata = RXADATA;
38  rxmask = 1;
39#else
40  rxadata = RXBDATA;
41  rxmask = 0x10000;
42#endif
43
44  while ((*rxstat & rxmask) == 0);
45
46  return *rxadata;
47}
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