4.104.114.84.95
Last change
on this file since be4284d0 was
f246caf,
checked in by Joel Sherrill <joel.sherrill@…>, on 07/25/98 at 14:13:34
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Interrupts were incorrectly managed with a disable/disable pair rather
than with a disable/enable pair.
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-
Property mode set to
100644
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File size:
1.4 KB
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1 | /* |
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2 | * This file contains a typical set of register access routines which may be |
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3 | * used with the z85c30 chip if accesses to the chip are as follows: |
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4 | * |
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5 | * + registers are accessed as bytes |
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6 | * |
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7 | * COPYRIGHT (c) 1989-1997. |
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8 | * On-Line Applications Research Corporation (OAR). |
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9 | * Copyright assigned to U.S. Government, 1994. |
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10 | * |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.OARcorp.com/rtems/license.html. |
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14 | * |
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15 | * $Id$ |
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16 | */ |
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17 | |
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18 | #include <rtems.h> |
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19 | |
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20 | #ifndef _Z85C30_MULTIPLIER |
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21 | #define _Z85C30_MULTIPLIER 1 |
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22 | #define _Z85C30_NAME(_X) _X |
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23 | #define _Z85C30_TYPE unsigned8 |
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24 | #endif |
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25 | |
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26 | /* |
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27 | * Z85C30 Get Register Routine |
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28 | */ |
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29 | |
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30 | unsigned8 _Z85C30_NAME(z85c30_get_register)( |
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31 | unsigned32 ulCtrlPort, |
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32 | unsigned8 ucRegNum |
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33 | ) |
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34 | { |
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35 | _Z85C30_TYPE *port; |
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36 | unsigned8 data; |
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37 | rtems_interrupt_level level; |
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38 | |
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39 | port = (_Z85C30_TYPE *)ulCtrlPort; |
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40 | |
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41 | rtems_interrupt_disable(level); |
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42 | |
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43 | if(ucRegNum) { |
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44 | *port = ucRegNum; |
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45 | } |
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46 | data = *port; |
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47 | rtems_interrupt_enable(level); |
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48 | |
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49 | return data; |
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50 | } |
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51 | |
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52 | /* |
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53 | * Z85C30 Set Register Routine |
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54 | */ |
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55 | |
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56 | void _Z85C30_NAME(z85c30_set_register)( |
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57 | unsigned32 ulCtrlPort, |
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58 | unsigned8 ucRegNum, |
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59 | unsigned8 ucData |
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60 | ) |
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61 | { |
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62 | _Z85C30_TYPE *port; |
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63 | rtems_interrupt_level level; |
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64 | |
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65 | port = (_Z85C30_TYPE *)ulCtrlPort; |
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66 | |
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67 | rtems_interrupt_disable(level); |
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68 | if(ucRegNum) { |
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69 | *port = ucRegNum; |
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70 | } |
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71 | *port = ucData; |
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72 | rtems_interrupt_enable(level); |
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73 | } |
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