178 lines
5.2 KiB
C
178 lines
5.2 KiB
C
/*
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File: cpu.c
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Contains: This file contains the hardware specific routines to control a PWM-based
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interface found on Asahi, TIM, DB-Lite.
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Written by: Andy Gong x6595
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Copyright: © 1991-1992 by Apple Computer, Inc. All rights reserved.
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This file is used in these builds: ROM
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Change History (most recent first):
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<SM1> 2/11/93 CSS Checked in from Horror.
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<1> 6/5/91 ag Moved data
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*/
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/*page*/
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/************************************/
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/*** INCLUDE FILES DECLARATIONS ***/
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#include <SysEqu.h>
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#include <types.h>
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#include <errors.h>
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#include "PowerMgr.h"
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#include "backlight.h"
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#define BACKLIGHT_POT_CHANNEL 0
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#define STATUS 0
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#define POWERBYTE 1
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#define TEMPBYTE 2
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/*page
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===================================================================================================
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== asahi software =================================================================================
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===================================================================================================
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*/
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/*page
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***************************************************************************************************
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*
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*
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***************************************************************************************************
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*/
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unsigned char PortableBacklightValue()
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{
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return(GetPortableValues(TEMPBYTE));
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};
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/*page
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===================================================================================================
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== TIM software ===================================================================================
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===================================================================================================
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*/
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OSErr InitTimControls(driverGlobalPtr globalPtr)
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{
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/* setup default values */
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if ((*JAWS_SPEED_FSTN_REG_PTR & JAWS_FSTN) == 0)
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globalPtr->dualTable = true; /* support high/low table */
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return(InitPWMControls(globalPtr));
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};
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/*page
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***************************************************************************************************
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*
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*
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***************************************************************************************************
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*/
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unsigned char PowerMgrPot()
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{
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return(Get_AtoD(BACKLIGHT_POT_CHANNEL));
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};
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/*page
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===================================================================================================
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== DB software ====================================================================================
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===================================================================================================
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*/
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/*page
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***************************************************************************************************
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*
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*
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***************************************************************************************************
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*/
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unsigned char PGE_button()
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{
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return(Get_PGEButton(BACKLIGHT_POT_CHANNEL));
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};
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/*page
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===================================================================================================
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== Dart software =================================================================================
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===================================================================================================
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*/
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extern setTableType BacklightTblDart;
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/*page
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***************************************************************************************************
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*
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* SetDart - <H8> backlight set routine for Dartanian with Ponti ACIC
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*
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*
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***************************************************************************************************
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*/
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int SetDart(int new,driverGlobalPtr globalPtr)
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{
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unsigned char newvalue;
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unsigned char oldvalue;
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PEG_TO_LIMITS(new, globalPtr->maximumTable[globalPtr->powerRange], globalPtr->settingTable->minimum); /* <H8> use new tables */ /* limit value to valid range */
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newvalue = globalPtr->settingTable->table[new]; /* shift bits into the correct position */
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if ((globalPtr->lastHWSetting) == newvalue) return (new);
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globalPtr->lastHWSetting = newvalue;
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newvalue <<= PONTILMPMUX0; /* shift bits into the correct position */
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oldvalue = PONTILMPCTLREG;
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oldvalue &= ~(0x03 << PONTILMPMUX0 | 0x01 << PONTILMPON); /* mask out lamp values */
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newvalue |= oldvalue; /* or in the other bits into the new value */
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if (new) newvalue |= (1 << PONTILMPON);
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PONTILMPCTLREG = newvalue;
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return (new);
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};
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/*page
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***************************************************************************************************
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*
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* GetDart - backlight get routine for Dartanian with Ponti ACIC
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*
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***************************************************************************************************
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*/
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int GetDart (driverGlobalPtr globalPtr)
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{
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int userinput;
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switch(globalPtr->powerRange)
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{
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case 1:
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case 2: userinput = 2; break;
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case 3: userinput = 1; break;
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case 4: userinput = 0; break;
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default: userinput = 3;
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};
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return(userinput);
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}
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OSErr InitDartControls(driverGlobalPtr globalPtr)
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{
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/* setup default values */
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PONTILMPCTLREG |= 0x01 << PONTILMPON; /* turn on backlight to enable sense bit */
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if (PONTILMPCTLREG & (0x01 << PONTILMPHWCTL)) /* check for hardare controls */
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{
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SetPWM(29,globalPtr); /* kludge for orca based units */
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globalPtr->setlevelproc = SetDart; /* proc to set level */
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globalPtr->userInputProc = GetDart; /* proc to read user input */
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};
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return(InitPWMControls(globalPtr));
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};
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