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Annotation of previous_trunk/src/dimension/nd_vio.cpp, revision 1.1

1.1     ! root        1: #include <stdio.h>
        !             2: #include <limits.h>
        !             3: #include <stdlib.h>
        !             4: 
        !             5: #include "main.h"
        !             6: #include "configuration.h"
        !             7: #include "m68000.h"
        !             8: #include "sysdeps.h"
        !             9: #include "dimension.hpp"
        !            10: #include "i860cfg.h"
        !            11: #include "nd_sdl.hpp"
        !            12: #include "host.h"
        !            13: 
        !            14: 
        !            15: #define LOG_VID_LEVEL   LOG_WARN
        !            16: 
        !            17: /* --------- NEXTDIMENSION VIDEO I/O ---------- *
        !            18:  *                                              *
        !            19:  * Code for NeXTdimension video I/O. For now    *
        !            20:  * only some dummy devices.                     */
        !            21: 
        !            22: 
        !            23: #define ND_VID_DMCD     0x8A
        !            24: #define ND_VID_DCSC0    0xE0
        !            25: #define ND_VID_DCSC1    0xE2
        !            26: 
        !            27: 
        !            28: /* SAA7191 (Digital Multistandard Colour Decoder - Square Pixel) */
        !            29: 
        !            30: DMCD::DMCD(NextDimension* nd) : nd(nd) {}
        !            31: 
        !            32: void DMCD::write(Uint32 step, Uint8 data) {
        !            33:     if (step == 0) {
        !            34:         addr = data;
        !            35:     } else {
        !            36:         Log_Printf(LOG_VID_LEVEL, "[ND] Slot %i: DMCD: Writing register %i (%02X)", nd->slot, addr, data);
        !            37:         
        !            38:         if (addr < ND_DMCD_NUM_REG) {
        !            39:             reg[addr] = data;
        !            40:             addr++;
        !            41:         } else {
        !            42:             Log_Printf(LOG_WARN, "[ND] Slot %i: DMCD: Illegal register (%i)", nd->slot, addr);
        !            43:         }
        !            44:     }
        !            45: }
        !            46: 
        !            47: 
        !            48: /* SAA7192 (Digital Colour Space Converter) */
        !            49: 
        !            50: #define ND_DCSC_CTRL    0x00
        !            51: #define ND_DCSC_CLUT    0x01
        !            52: 
        !            53: DCSC::DCSC(NextDimension* nd, int dev) : nd(nd), dev(dev) {}
        !            54: 
        !            55: void DCSC::write(Uint32 step, Uint8 data) {
        !            56:     switch (step) {
        !            57:         case 0:
        !            58:             addr = data;
        !            59:             break;
        !            60:         case 1:
        !            61:             if (addr == ND_DCSC_CTRL) {
        !            62:                 Log_Printf(LOG_VID_LEVEL, "[ND] Slot %i: DCSC%i: Writing control (%02X)", nd->slot, dev, data);
        !            63:                 
        !            64:                 ctrl = data;
        !            65:                 break;
        !            66:             }
        !            67:             /* else fall through */
        !            68: 
        !            69:         default:
        !            70:             if (addr == ND_DCSC_CLUT) {
        !            71:                 Log_Printf(LOG_VID_LEVEL, "[ND] Slot %i: DCSC%i: Writing LUT at %i (%02X)", nd->slot, dev, step-1, data);
        !            72: 
        !            73:                 lut[(step-1)&0xFF] = data;
        !            74:             } else {
        !            75:                 Log_Printf(LOG_WARN, "[ND] Slot %i: DCSC%i: Unknown address (%02X)", nd->slot, dev, addr);
        !            76:             }
        !            77:             break;
        !            78:     }
        !            79: }
        !            80: 
        !            81: 
        !            82: /* Receiver function (from IIC bus) */
        !            83: 
        !            84: void NextDimension::video_dev_write(Uint8 addr, Uint32 step, Uint8 data) {
        !            85:     if (addr&0x01) {
        !            86:         Log_Printf(LOG_WARN, "[ND] Slot %i: IIC bus: Unimplemented read from video device at %02X", slot, addr);
        !            87:     }
        !            88:     
        !            89:     if (step == 0) {
        !            90:         Log_Printf(LOG_VID_LEVEL, "[ND] Slot %i: IIC bus: selecting device at %02X (subaddress: %02X)", slot, addr, data);
        !            91:     }
        !            92:     
        !            93:     switch (addr&0xFE) {
        !            94:         case ND_VID_DMCD:
        !            95:             dmcd.write(step, data);
        !            96:             break;
        !            97:         case ND_VID_DCSC0:
        !            98:             dcsc0.write(step, data);
        !            99:             break;
        !           100:         case ND_VID_DCSC1:
        !           101:             dcsc1.write(step, data);
        !           102:             break;
        !           103:             
        !           104:         default:
        !           105:             Log_Printf(LOG_WARN, "[ND] Slot %i: IIC bus: Unknown device (%02X)", slot, addr);
        !           106:             break;
        !           107:     }
        !           108: }

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