Last change
on this file since 577 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
File size:
598 bytes
|
Line | |
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1 | static volatile char *data = (char *)(0x20); |
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2 | static volatile char *control = (char *)(0x24); |
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3 | |
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4 | extern void _outb (volatile char*, unsigned char); |
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5 | extern unsigned char _inb (volatile char*); |
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6 | |
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7 | static unsigned char |
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8 | read_scc_reg (unsigned char n) |
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9 | { |
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10 | _outb (control, n); |
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11 | return _inb(control); |
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12 | } |
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13 | |
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14 | static void write_scc_data (unsigned char n) |
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15 | { |
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16 | _outb (data, n); |
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17 | } |
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18 | |
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19 | int |
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20 | _write (int dev, void *buf, unsigned int len) |
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21 | { |
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22 | int i; |
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23 | char *string = (char*)buf; |
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24 | |
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25 | for (i = 0; i < len; i++) |
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26 | { |
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27 | int j; |
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28 | |
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29 | for (j = 0 ; j < 5000; j++) |
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30 | ; |
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31 | write_scc_data (string[i]); |
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32 | |
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33 | } |
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34 | return len; |
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35 | } |
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36 | |
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