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Annotation of nono/vm/areaset.cpp, revision 1.1.1.3

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 "areaset.h"
1.1.1.3 ! root        8: #include "mpu.h"
1.1       root        9: 
                     10: AreaSetDevice::AreaSetDevice()
                     11: {
                     12:        logname = "area";
                     13:        devname = "AreaSet";
                     14:        devaddr = baseaddr;
                     15:        devlen  = 0x2000;
                     16: }
                     17: 
                     18: AreaSetDevice::~AreaSetDevice()
                     19: {
                     20: }
                     21: 
1.1.1.3 ! root       22: void
        !            23: AreaSetDevice::ResetHard()
        !            24: {
        !            25:        limit = 0;
        !            26: }
        !            27: 
1.1       root       28: uint64
                     29: AreaSetDevice::Read8(uint32 addr)
                     30: {
                     31:        switch (addr) {
                     32:         case 0xe86001:
                     33:                return limit;
                     34:        }
                     35:        return (uint64)-1;
                     36: }
                     37: 
                     38: uint64
                     39: AreaSetDevice::Read16(uint32 addr)
                     40: {
                     41:        return 0xff00 | Read8(addr + 1);
                     42: }
                     43: 
                     44: uint64
                     45: AreaSetDevice::Write8(uint32 addr, uint32 data)
                     46: {
1.1.1.3 ! root       47:        gMPU->AddCycle(7);      // InsideOut p.135
        !            48: 
1.1       root       49:        switch (addr) {
                     50:         case 0xe86001:
                     51:                putlog(0, "未実装エリアセット書き込み $%02x", data);
                     52:                limit = data;
                     53:                return 0;
                     54:         default:
                     55:                break;
                     56:        }
                     57:        return (uint64)-1;
                     58: }
                     59: 
                     60: uint64
                     61: AreaSetDevice::Write16(uint32 addr, uint32 data)
                     62: {
                     63:        return Write8(addr + 1, data);
                     64: }
                     65: 
                     66: uint64
                     67: AreaSetDevice::Peek8(uint32 addr)
                     68: {
                     69:        switch (addr) {
                     70:         case 0xe86001:
                     71:                return limit;
                     72:         default:
                     73:                return 0xff;
                     74:        }
                     75: }

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