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Annotation of nono/vm/printer.cpp, revision 1.1.1.8

1.1       root        1: //
                      2: // nono
1.1.1.2   root        3: // Copyright (C) 2020 nono project
                      4: // Licensed under nono-license.txt
1.1       root        5: //
                      6: 
1.1.1.6   root        7: //
                      8: // プリンタポート
                      9: //
                     10: 
1.1       root       11: #include "printer.h"
1.1.1.3   root       12: #include "mpu.h"
1.1       root       13: 
1.1.1.6   root       14: // コンストラクタ
1.1       root       15: PrinterDevice::PrinterDevice()
1.1.1.8 ! root       16:        : inherited(OBJ_PRINTER)
1.1       root       17: {
                     18: }
                     19: 
1.1.1.6   root       20: // デストラクタ
1.1       root       21: PrinterDevice::~PrinterDevice()
                     22: {
                     23: }
                     24: 
                     25: uint64
                     26: PrinterDevice::Read8(uint32 addr)
                     27: {
                     28:        // 書き込み専用
1.1.1.8 ! root       29:        mpu->AddCycle(7);       // InsideOut p.135
1.1       root       30:        return (uint64)-1;
                     31: }
                     32: 
                     33: uint64
                     34: PrinterDevice::Read16(uint32 addr)
                     35: {
                     36:        // 書き込み専用
1.1.1.8 ! root       37:        mpu->AddCycle(7);       // InsideOut p.135
1.1       root       38:        return (uint64)-1;
                     39: }
                     40: 
                     41: uint64
                     42: PrinterDevice::Write8(uint32 addr, uint32 data)
                     43: {
1.1.1.8 ! root       44:        mpu->AddCycle(7);       // InsideOut p.135
1.1.1.3   root       45: 
1.1       root       46:        uint32 offset = addr - baseaddr;
                     47:        switch (offset) {
                     48:         case 0:
1.1.1.7   root       49:                // データ書き込み
                     50:                putlog(0, "Write Data (NOT IMPLEMENTED)");
1.1       root       51:                break;
                     52:         case 3:
1.1.1.7   root       53:                // ストローブ書き込み
                     54:                putlog(0, "Write Strobe (NOT IMPLEMENTED)");
1.1       root       55:                return 0;
                     56:         default:
                     57:                break;
                     58:        }
                     59:        return (uint64)-1;
                     60: }
                     61: 
                     62: uint64
                     63: PrinterDevice::Write16(uint32 addr, uint32 data)
                     64: {
                     65:        return Write8(addr + 1, data);
                     66: }
                     67: 
                     68: uint64
                     69: PrinterDevice::Peek8(uint32 addr)
                     70: {
                     71:        // XXX
                     72:        return 0xff;
                     73: }

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