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blitterRegs.cpp
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blitterRegs.cpp
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#include "blitterRegs.h"
#include "blitter.h"
uint32_t blitterRegsInit( tgBlitterRegs_t *regs )
{
regs->id = 0x80000005;
regs->version = 0x20240918;
regs->command = 0;
return RV_OK;
}
uint32_t blitterRegsReadReg( tgBlitterRegs_t *regs, uint16_t addr )
{
switch( addr >> 2 )
{
case 0x00:
return regs->id;
break;
case 0x01:
return regs->version;
break;
case 0x02:
//status, emulated blitter always ready
return 1;
break;
case 0x03:
return regs->input0;
break;
case 0x04:
return regs->input1;
break;
case 0x05:
return regs->input2;
break;
case 0x06:
return regs->input3;
break;
case 0x07:
return regs->saAddress;
break;
case 0x08:
return regs->saRowWidth;
break;
case 0x09:
return regs->saWidth;
break;
case 0x0a:
return regs->saHeight;
break;
case 0x0b:
return regs->sbAddress;
break;
case 0x0c:
return regs->sbRowWidth;
break;
case 0x0d:
return regs->scAddress;
break;
case 0x0e:
return regs->scRowWidth;
break;
case 0x0f:
return regs->daAddress;
break;
case 0x10:
return regs->daRowWidth;
break;
case 0x11:
return regs->daWidth;
break;
case 0x12:
return regs->daHeight;
break;
case 0x13:
return regs->dbAddress;
break;
case 0x14:
return regs->dbRowWidth;
break;
}
return 0;
}
uint32_t blitterRegsWriteReg( tgBlitterRegs_t *regs, uint16_t addr, uint32_t value )
{
switch( addr >> 2 )
{
case 0x02:
//blitter command
blitterCommand( regs, value );
break;
case 0x03:
regs->input0 = value;
break;
case 0x04:
regs->input1 = value;
break;
case 0x05:
regs->input2 = value;
break;
case 0x06:
regs->input3 = value;
break;
case 0x07:
regs->saAddress = value;
break;
case 0x08:
regs->saRowWidth = value;
break;
case 0x09:
regs->saWidth = value;
break;
case 0x0a:
regs->saHeight = value;
break;
case 0x0b:
regs->sbAddress = value;
break;
case 0x0c:
regs->sbRowWidth = value;
break;
case 0x0d:
regs->scAddress = value;
break;
case 0x0e:
regs->scRowWidth = value;
break;
case 0x0f:
regs->daAddress = value;
break;
case 0x10:
regs->daRowWidth = value;
break;
case 0x11:
regs->daWidth = value;
break;
case 0x12:
regs->daHeight = value;
break;
case 0x13:
regs->dbAddress = value;
break;
case 0x14:
regs->dbRowWidth = value;
break;
}
return RV_OK;
}