openMSX
Classes | Enumerations | Functions | Variables
openmsx::VDPAccessSlots Namespace Reference

Classes

struct  AccessTable
 
struct  CycleTable
 
struct  ZeroTable
 
class  Calculator
 VDP-VRAM access slot calculator, meant to be used in the inner loops of the VDPCmdEngine commands. More...
 

Enumerations

enum  Delta : int {
  DELTA_0 = 0 * TICKS , DELTA_1 = 1 * TICKS , DELTA_16 = 2 * TICKS , DELTA_24 = 3 * TICKS ,
  DELTA_28 = 4 * TICKS , DELTA_32 = 5 * TICKS , DELTA_40 = 6 * TICKS , DELTA_48 = 7 * TICKS ,
  DELTA_64 = 8 * TICKS , DELTA_72 = 9 * TICKS , DELTA_88 = 10 * TICKS , DELTA_104 = 11 * TICKS ,
  DELTA_120 = 12 * TICKS , DELTA_128 = 13 * TICKS , DELTA_136 = 14 * TICKS , NUM_DELTAS = 15
}
 

Functions

constexpr CycleTable tabSpritesOn (false, slotsSpritesOn)
 
constexpr CycleTable tabSpritesOff (false, slotsSpritesOff)
 
constexpr CycleTable tabCharSpritesOn (false, slotsCharSpritesOn)
 
constexpr CycleTable tabCharSpritesOff (false, slotsCharSpritesOff)
 
constexpr CycleTable tabText (false, slotsText)
 
constexpr CycleTable tabScreenOff (false, slotsScreenOff)
 
constexpr CycleTable tabMsx1Gfx12 (true, slotsMsx1Gfx12)
 
constexpr CycleTable tabMsx1Gfx3 (true, slotsMsx1Gfx3)
 
constexpr CycleTable tabMsx1Text (true, slotsMsx1Text)
 
constexpr CycleTable tabMsx1ScreenOff (true, slotsMsx1ScreenOff)
 
EmuTime getAccessSlot (EmuTime::param frame, EmuTime::param time, Delta delta, const VDP &vdp)
 Return the time of the next available access slot that is at least 'delta' cycles later than 'time'. More...
 
Calculator getCalculator (EmuTime::param frame, EmuTime::param time, EmuTime::param limit, const VDP &vdp)
 When many calls to getAccessSlot() are needed, it's more efficient to instead use this function. More...
 

Variables

constexpr int16_t slotsScreenOff [154+17]
 
constexpr int16_t slotsSpritesOff [88+16]
 
constexpr int16_t slotsCharSpritesOff [88+17]
 
constexpr int16_t slotsSpritesOn [31+3]
 
constexpr int16_t slotsCharSpritesOn [31+3]
 
constexpr int16_t slotsText [47+10]
 
constexpr int16_t slotsMsx1ScreenOff [107+18]
 
constexpr int16_t slotsMsx1Gfx12 [19+8]
 
constexpr int16_t slotsMsx1Gfx3 [51+8]
 
constexpr int16_t slotsMsx1Text [91+18]
 
constexpr ZeroTable tabBroken
 
constexpr int TICKS = VDP::TICKS_PER_LINE
 

Enumeration Type Documentation

◆ Delta

enum openmsx::VDPAccessSlots::Delta : int
Enumerator
DELTA_0 
DELTA_1 
DELTA_16 
DELTA_24 
DELTA_28 
DELTA_32 
DELTA_40 
DELTA_48 
DELTA_64 
DELTA_72 
DELTA_88 
DELTA_104 
DELTA_120 
DELTA_128 
DELTA_136 
NUM_DELTAS 

Definition at line 12 of file VDPAccessSlots.hh.

Function Documentation

◆ getAccessSlot()

EmuTime openmsx::VDPAccessSlots::getAccessSlot ( EmuTime::param  frame,
EmuTime::param  time,
Delta  delta,
const VDP &  vdp 
)

Return the time of the next available access slot that is at least 'delta' cycles later than 'time'.

The start of the current 'frame' is needed for reference.

Definition at line 243 of file VDPAccessSlots.cc.

References openmsx::Clock< TICKS_PER_SECOND >::duration(), openmsx::Clock< FREQ_NUM, FREQ_DENOM >::getTicksTill_fast(), and TICKS.

Referenced by openmsx::VDP::getAccessSlot().

◆ getCalculator()

Calculator openmsx::VDPAccessSlots::getCalculator ( EmuTime::param  frame,
EmuTime::param  time,
EmuTime::param  limit,
const VDP &  vdp 
)

When many calls to getAccessSlot() are needed, it's more efficient to instead use this function.

Definition at line 253 of file VDPAccessSlots.cc.

Referenced by openmsx::VDP::getAccessSlotCalculator().

◆ tabCharSpritesOff()

constexpr CycleTable openmsx::VDPAccessSlots::tabCharSpritesOff ( false  ,
slotsCharSpritesOff   
)
constexpr

◆ tabCharSpritesOn()

constexpr CycleTable openmsx::VDPAccessSlots::tabCharSpritesOn ( false  ,
slotsCharSpritesOn   
)
constexpr

◆ tabMsx1Gfx12()

constexpr CycleTable openmsx::VDPAccessSlots::tabMsx1Gfx12 ( true  ,
slotsMsx1Gfx12   
)
constexpr

◆ tabMsx1Gfx3()

constexpr CycleTable openmsx::VDPAccessSlots::tabMsx1Gfx3 ( true  ,
slotsMsx1Gfx3   
)
constexpr

◆ tabMsx1ScreenOff()

constexpr CycleTable openmsx::VDPAccessSlots::tabMsx1ScreenOff ( true  ,
slotsMsx1ScreenOff   
)
constexpr

◆ tabMsx1Text()

constexpr CycleTable openmsx::VDPAccessSlots::tabMsx1Text ( true  ,
slotsMsx1Text   
)
constexpr

◆ tabScreenOff()

constexpr CycleTable openmsx::VDPAccessSlots::tabScreenOff ( false  ,
slotsScreenOff   
)
constexpr

◆ tabSpritesOff()

constexpr CycleTable openmsx::VDPAccessSlots::tabSpritesOff ( false  ,
slotsSpritesOff   
)
constexpr

◆ tabSpritesOn()

constexpr CycleTable openmsx::VDPAccessSlots::tabSpritesOn ( false  ,
slotsSpritesOn   
)
constexpr

◆ tabText()

constexpr CycleTable openmsx::VDPAccessSlots::tabText ( false  ,
slotsText   
)
constexpr

Variable Documentation

◆ slotsCharSpritesOff

constexpr int16_t openmsx::VDPAccessSlots::slotsCharSpritesOff[88+17]
constexpr
Initial value:
= {
2, 10, 18, 26, 34, 42, 50, 58, 66, 74,
82, 90, 98, 106, 114, 122, 166, 174, 188, 194,
220, 226, 252, 258, 290, 316, 322, 348, 354, 380,
386, 418, 444, 450, 476, 482, 508, 514, 546, 572,
578, 604, 610, 636, 642, 674, 700, 706, 732, 738,
764, 770, 802, 828, 834, 860, 866, 892, 898, 930,
956, 962, 988, 994, 1020, 1026, 1058, 1084, 1090, 1116,
1122, 1148, 1154, 1186, 1212, 1218, 1270, 1278, 1286, 1294,
1302, 1310, 1318, 1326, 1336, 1346, 1354, 1362,
1368+ 2, 1368+ 10, 1368+18, 1368+ 26, 1368+ 34,
1368+ 42, 1368+ 50, 1368+58, 1368+ 66, 1368+ 74,
1368+ 82, 1368+ 90, 1368+98, 1368+106, 1368+114,
1368+122, 1368+166,
}

Definition at line 56 of file VDPAccessSlots.cc.

◆ slotsCharSpritesOn

constexpr int16_t openmsx::VDPAccessSlots::slotsCharSpritesOn[31+3]
constexpr
Initial value:
= {
32, 96, 166, 174, 188, 220, 252, 316, 348, 380,
444, 476, 508, 572, 604, 636, 700, 732, 764, 828,
860, 892, 956, 988, 1020, 1084, 1116, 1148, 1212, 1268,
1334,
1368+32, 1368+96, 1368+166,
}

Definition at line 82 of file VDPAccessSlots.cc.

◆ slotsMsx1Gfx12

constexpr int16_t openmsx::VDPAccessSlots::slotsMsx1Gfx12[19+8]
constexpr
Initial value:
= {
4, 12, 20, 28, 116, 124, 132, 140, 220, 348,
476, 604, 732, 860, 988, 1116, 1236, 1244, 1364,
1368+ 4, 1368+ 12, 1368+ 20, 1368+ 28, 1368+116,
1368+124, 1368+132, 1368+140,
}

Definition at line 123 of file VDPAccessSlots.cc.

◆ slotsMsx1Gfx3

constexpr int16_t openmsx::VDPAccessSlots::slotsMsx1Gfx3[51+8]
constexpr
Initial value:
= {
4, 12, 20, 28, 116, 124, 132, 140, 220, 228,
260, 292, 324, 348, 356, 388, 420, 452, 476, 484,
516, 548, 580, 604, 612, 644, 676, 708, 732, 740,
772, 804, 836, 860, 868, 900, 932, 964, 988, 996,
1028, 1060, 1092, 1116, 1124, 1156, 1188, 1220, 1236, 1244,
1364,
1368+ 4, 1368+ 12, 1368+ 20, 1368+ 28, 1368+116,
1368+124, 1368+132, 1368+140,
}

Definition at line 131 of file VDPAccessSlots.cc.

◆ slotsMsx1ScreenOff

constexpr int16_t openmsx::VDPAccessSlots::slotsMsx1ScreenOff[107+18]
constexpr
Initial value:
= {
4, 12, 20, 28, 36, 44, 52, 60, 68, 76,
84, 92, 100, 108, 116, 124, 132, 140, 148, 156,
164, 172, 180, 188, 196, 204, 220, 236, 252, 268,
284, 300, 316, 332, 348, 364, 380, 396, 412, 428,
444, 460, 476, 492, 508, 524, 540, 556, 572, 588,
604, 620, 636, 652, 668, 684, 700, 716, 732, 748,
764, 780, 796, 812, 828, 844, 860, 876, 892, 908,
924, 940, 956, 972, 988, 1004, 1020, 1036, 1052, 1068,
1084, 1100, 1116, 1132, 1148, 1164, 1180, 1196, 1212, 1228,
1236, 1244, 1252, 1260, 1268, 1276, 1284, 1292, 1300, 1308,
1316, 1324, 1332, 1340, 1348, 1356, 1364,
1368+ 4, 1368+ 12, 1368+ 20, 1368+ 28, 1368+ 36,
1368+ 44, 1368+ 52, 1368+ 60, 1368+ 68, 1368+ 76,
1368+ 84, 1368+ 92, 1368+100, 1368+108, 1368+116,
1368+124, 1368+132, 1368+140,
}

Definition at line 104 of file VDPAccessSlots.cc.

◆ slotsMsx1Text

constexpr int16_t openmsx::VDPAccessSlots::slotsMsx1Text[91+18]
constexpr
Initial value:
= {
4, 12, 20, 28, 36, 44, 52, 60, 68, 76,
84, 92, 100, 108, 116, 124, 132, 140, 148, 156,
164, 172, 180, 188, 196, 204, 212, 220, 228, 244,
268, 292, 316, 340, 364, 388, 412, 436, 460, 484,
508, 532, 556, 580, 604, 628, 652, 676, 700, 724,
748, 772, 796, 820, 844, 868, 892, 916, 940, 964,
988, 1012, 1036, 1060, 1084, 1108, 1132, 1156, 1180, 1196,
1204, 1212, 1220, 1228, 1236, 1244, 1252, 1260, 1268, 1276,
1284, 1292, 1300, 1308, 1316, 1324, 1332, 1340, 1348, 1356,
1364,
1368+ 4, 1368+ 12, 1368+ 20, 1368+ 28, 1368+ 36,
1368+ 44, 1368+ 52, 1368+ 60, 1368+ 68, 1368+ 76,
1368+ 84, 1368+ 92, 1368+100, 1368+108, 1368+116,
1368+124, 1368+132, 1368+140,
}

Definition at line 144 of file VDPAccessSlots.cc.

◆ slotsScreenOff

constexpr int16_t openmsx::VDPAccessSlots::slotsScreenOff[154+17]
constexpr
Initial value:
= {
0, 8, 16, 24, 32, 40, 48, 56, 64, 72,
80, 88, 96, 104, 112, 120, 164, 172, 180, 188,
196, 204, 212, 220, 228, 236, 244, 252, 260, 268,
276, 292, 300, 308, 316, 324, 332, 340, 348, 356,
364, 372, 380, 388, 396, 404, 420, 428, 436, 444,
452, 460, 468, 476, 484, 492, 500, 508, 516, 524,
532, 548, 556, 564, 572, 580, 588, 596, 604, 612,
620, 628, 636, 644, 652, 660, 676, 684, 692, 700,
708, 716, 724, 732, 740, 748, 756, 764, 772, 780,
788, 804, 812, 820, 828, 836, 844, 852, 860, 868,
876, 884, 892, 900, 908, 916, 932, 940, 948, 956,
964, 972, 980, 988, 996, 1004, 1012, 1020, 1028, 1036,
1044, 1060, 1068, 1076, 1084, 1092, 1100, 1108, 1116, 1124,
1132, 1140, 1148, 1156, 1164, 1172, 1188, 1196, 1204, 1212,
1220, 1228, 1268, 1276, 1284, 1292, 1300, 1308, 1316, 1324,
1334, 1344, 1352, 1360,
1368+ 0, 1368+ 8, 1368+16, 1368+ 24, 1368+ 32,
1368+ 40, 1368+ 48, 1368+56, 1368+ 64, 1368+ 72,
1368+ 80, 1368+ 88, 1368+96, 1368+104, 1368+112,
1368+120, 1368+164
}

Definition at line 11 of file VDPAccessSlots.cc.

◆ slotsSpritesOff

constexpr int16_t openmsx::VDPAccessSlots::slotsSpritesOff[88+16]
constexpr
Initial value:
= {
6, 14, 22, 30, 38, 46, 54, 62, 70, 78,
86, 94, 102, 110, 118, 162, 170, 182, 188, 214,
220, 246, 252, 278, 310, 316, 342, 348, 374, 380,
406, 438, 444, 470, 476, 502, 508, 534, 566, 572,
598, 604, 630, 636, 662, 694, 700, 726, 732, 758,
764, 790, 822, 828, 854, 860, 886, 892, 918, 950,
956, 982, 988, 1014, 1020, 1046, 1078, 1084, 1110, 1116,
1142, 1148, 1174, 1206, 1212, 1266, 1274, 1282, 1290, 1298,
1306, 1314, 1322, 1332, 1342, 1350, 1358, 1366,
1368+ 6, 1368+14, 1368+ 22, 1368+ 30, 1368+ 38,
1368+ 46, 1368+54, 1368+ 62, 1368+ 70, 1368+ 78,
1368+ 86, 1368+94, 1368+102, 1368+110, 1368+118,
1368+162,
}

Definition at line 35 of file VDPAccessSlots.cc.

◆ slotsSpritesOn

constexpr int16_t openmsx::VDPAccessSlots::slotsSpritesOn[31+3]
constexpr
Initial value:
= {
28, 92, 162, 170, 188, 220, 252, 316, 348, 380,
444, 476, 508, 572, 604, 636, 700, 732, 764, 828,
860, 892, 956, 988, 1020, 1084, 1116, 1148, 1212, 1264,
1330,
1368+28, 1368+92, 1368+162,
}

Definition at line 73 of file VDPAccessSlots.cc.

◆ slotsText

constexpr int16_t openmsx::VDPAccessSlots::slotsText[47+10]
constexpr
Initial value:
= {
2, 10, 18, 26, 34, 42, 50, 58, 66, 166,
174, 182, 190, 198, 206, 214, 222, 312, 408, 504,
600, 696, 792, 888, 984, 1080, 1176, 1206, 1214, 1222,
1230, 1238, 1246, 1254, 1262, 1270, 1278, 1286, 1294, 1302,
1310, 1318, 1326, 1336, 1346, 1354, 1362,
1368+ 2, 1368+10, 1368+18, 1368+26, 1368+ 34,
1368+42, 1368+50, 1368+58, 1368+66, 1368+166,
}

Definition at line 91 of file VDPAccessSlots.cc.

◆ tabBroken

constexpr ZeroTable openmsx::VDPAccessSlots::tabBroken
constexpr

Definition at line 214 of file VDPAccessSlots.cc.

◆ TICKS

constexpr int openmsx::VDPAccessSlots::TICKS = VDP::TICKS_PER_LINE
constexpr

Definition at line 10 of file VDPAccessSlots.hh.

Referenced by openmsx::VDPAccessSlots::Calculator::Calculator(), openmsx::VDPAccessSlots::CycleTable::CycleTable(), getAccessSlot(), and openmsx::VDPAccessSlots::Calculator::next().

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