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Annotation of nono/vm/printer.cpp, revision 1.1.1.4

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: 
                      7: #include "printer.h"
1.1.1.3   root        8: #include "mpu.h"
1.1       root        9: 
1.1.1.4 ! root       10: std::unique_ptr<PrinterDevice> gPrinter;
        !            11: 
1.1       root       12: PrinterDevice::PrinterDevice()
                     13: {
                     14:        logname = "printer";
                     15:        devname = "Printer";
                     16:        devaddr = baseaddr;
                     17:        devlen  = 0x2000;
                     18: }
                     19: 
                     20: PrinterDevice::~PrinterDevice()
                     21: {
                     22: }
                     23: 
                     24: uint64
                     25: PrinterDevice::Read8(uint32 addr)
                     26: {
                     27:        // 書き込み専用
1.1.1.3   root       28:        gMPU->AddCycle(7);      // InsideOut p.135
1.1       root       29:        return (uint64)-1;
                     30: }
                     31: 
                     32: uint64
                     33: PrinterDevice::Read16(uint32 addr)
                     34: {
                     35:        // 書き込み専用
1.1.1.3   root       36:        gMPU->AddCycle(7);      // InsideOut p.135
1.1       root       37:        return (uint64)-1;
                     38: }
                     39: 
                     40: uint64
                     41: PrinterDevice::Write8(uint32 addr, uint32 data)
                     42: {
1.1.1.3   root       43:        gMPU->AddCycle(7);      // InsideOut p.135
                     44: 
1.1       root       45:        uint32 offset = addr - baseaddr;
                     46:        switch (offset) {
                     47:         case 0:
                     48:                putlog(0, "未実装データ書き込み");
                     49:                break;
                     50:         case 3:
                     51:                putlog(0, "未実装ストローブ書き込み");
                     52:                return 0;
                     53:         default:
                     54:                break;
                     55:        }
                     56:        return (uint64)-1;
                     57: }
                     58: 
                     59: uint64
                     60: PrinterDevice::Write16(uint32 addr, uint32 data)
                     61: {
                     62:        return Write8(addr + 1, data);
                     63: }
                     64: 
                     65: uint64
                     66: PrinterDevice::Peek8(uint32 addr)
                     67: {
                     68:        // XXX
                     69:        return 0xff;
                     70: }

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