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Able to disable mpu401

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Added some intelligent mode commands.


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@738
This commit is contained in:
Sjoerd van der Berg 2003-03-10 16:24:21 +00:00
parent 33bbeee6e2
commit 4c5ec02038
1 changed files with 146 additions and 6 deletions
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152
src/hardware/mpu401.cpp
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@ -14,12 +14,141 @@ bool MIDI_Available(void);
#define MPU_QUEUE 32
enum MpuMode { M_UART,M_INTELLIGENT } ;
#define CMD_RET_ACK 0xfe
/////////////////////////////////////////////////////////////////////////////
// I/O
/////////////////////////////////////////////////////////////////////////////
#define MPU_STATUS_DSR (1 << 7)
#define MPU_STATUS_DRR (1 << 6)
#define MPU_STATUS_PAD (0xff & (~(MPU_STATUS_DRR | MPU_STATUS_DSR)))
#define MK_MPU_STATUS(dsr, drr)\
(((dsr) ? 0 : MPU_STATUS_DSR) | ((drr) ? 0 : MPU_STATUS_DRR) | MPU_STATUS_PAD)
/////////////////////////////////////////////////////////////////////////////
// Commands
/////////////////////////////////////////////////////////////////////////////
/** Copyright notice for MPU-401 intelligent-mode command constants *********
MPU-401 MIDI Interface Module v1.0
Copyright (c) 1991, Robin Davies. All Rights Reserved.
Robin Davies
224 3rd Avenue
Ottawa, Ontario
Canada. K1S 2K3.
updated by:
Larry Troxler, Compuserve 73520,1736
****************************************************************************/
// Start/Stop Commands
#define CMD_MIDI_STOP 0x01
#define CMD_MIDI_START 0x02
#define CMD_MIDI_CONTINUE 0x03
#define CMD_PLAY_STOP 0x04
#define CMD_PLAY_START 0x08
#define CMD_PLAY_CONTINUE 0x0c
#define CMD_RECORD_STOP 0x10
#define CMD_RECORD_START 0x20
// Commands
#define CMD_DISABLE_ALL_NOTES_OFF 0x30
#define CMD_DISABLE_REAL_TIME_OUT 0x32
#define CMD_TIMING_BYTE_ALWAYS 0x34
#define CMD_MODE_MESS_ON 0x35
#define CMD_EXCLUSIVE_THRU_ON 0x37
#define CMD_COMMON_TO_HOST_ON 0x38
#define CMD_REAL_TIME_TO_HOST_ON 0x39
#define CMD_UART_MODE 0x3f
#define CMD_INT_CLOCK 0x80
#define CMD_FSK_CLOCK 0x81
#define CMD_MIDI_CLOCK 0x82
#define CMD_METRONOME_ON 0x83
#define CMD_METRONOME_OFF 0x84
#define CMD_METRONOME_W_ACCENTS 0x85
#define CMD_BENDER_OFF 0x86
#define CMD_BENDER_ON 0x87
#define CMD_MIDI_THRU_OFF 0x88
#define CMD_MIDI_THRU_ON 0x89
#define CMD_DATA_IN_STOP_MODE_OFF 0x8a
#define CMD_DATA_IN_STOP_MODE_ON 0x8b
#define CMD_SEND_MEASURE_END_OFF 0x8c
#define CMD_SEND_MEASURE_END_ON 0x8d
#define CMD_CONDUCTOR_OFF 0x8e
#define CMD_CONDUCTOR_ON 0x8f
#define CMD_REAL_TIME_AFFECTION_OFF 0x90
#define CMD_REAL_TIME_AFFECTION_ON 0x91
#define CMD_FSK_TO_INTERNAL 0x92
#define CMD_FSK_TO_MIDI 0x93
#define CMD_CLOCK_TO_HOST_OFF 0x94
#define CMD_CLOCK_TO_HOST_ON 0x95
#define CMD_EXCLUSIVE_TO_HOST_OFF 0x96
#define CMD_EXCLUSIVE_TO_HOST_ON 0x97
#define CMD_RESET_RELATIVE_TEMPO 0xb1
#define CMD_CLEAR_PLAY_COUNTERS 0xb8
#define CMD_CLEAR_PLAY_MAP 0xb9
#define CMD_CLEAR_RECORD_COUNTER 0xba
#define CMD_TIMEBASE_48 0xc2
#define CMD_TIMEBASE_72 0xc3
#define CMD_TIMEBASE_96 0xc4
#define CMD_TIMEBASE_120 0xc5
#define CMD_TIMEBASE_144 0xc6
#define CMD_TIMEBASE_168 0xc7
#define CMD_TIMEBASE_192 0xc8
#define CMD_REQUEST_TO_SEND_DATA 0xd0 /* + track #! */
#define CMD_REQUEST_TO_SEND_SYSTEM_MSG 0xdf
#define CMD_SET_TEMPO 0xe0
#define CMD_RELATIVE_TEMPO 0xe1
#define CMD_RELATIVE_TEMPO_GRADUATION 0xe2
#define CMD_MIDI_METRONOME 0xe4
#define CMD_MEASURE_LENGTH 0xe6
#define CMD_INTERNAL_CLOCK_LENGTH_TO_HOST /* ? */
#define CMD_ACTIVE_TRACK_MASK 0xec
#define CMD_SEND_PLAY_COUNTER_MASK 0xed
#define CMD_MIDI_CHANNEL_MASK_LO 0xee
#define CMD_MIDI_CHANNEL_MASK_HI 0xef
#define CMD_EOX 0xf7
#define CMD_TIMING_OVERFLOW 0xf8
#define CMD_MPU_MARK 0xfc
#define CMD_RESET 0xff
// Commands that return data
#define CMD_REQUEST_PLAY_COUNTER 0xa0
#define CMD_REQUEST_AND_CLEAR_PLAY_COUNTER 0xab
#define CMD_REQUEST_VERSION 0xac
#define CMD_REQUEST_REVISION 0xad
#define CMD_REQUEST_TEMPO 0xaf
/////////////////////////////////////////////////////////////////////////////
// Messages
/////////////////////////////////////////////////////////////////////////////
#define MSG_CMD_ACK 0xfe
static struct {
MpuMode mode;
Bit8u queue[MPU_QUEUE];
Bitu queue_pos,queue_used;
Bitu cmd;
} mpu;
@ -39,16 +168,24 @@ static void ClrQueue(void) {
static void MPU401_WriteCommand(Bit32u port,Bit8u val) {
switch (val) {
case 0x3f: /* Switch to UART Mode */
case CMD_UART_MODE: /* Switch to UART Mode */
mpu.mode=M_UART;
QueueByte(CMD_RET_ACK);
QueueByte(MSG_CMD_ACK);
break;
case 0xff: /* Reset Commmand */
case CMD_RESET: /* Reset Commmand */
mpu.mode=M_INTELLIGENT;
ClrQueue();
QueueByte(CMD_RET_ACK);
QueueByte(MSG_CMD_ACK);
break;
case CMD_REQUEST_TO_SEND_DATA:
case CMD_REQUEST_TO_SEND_SYSTEM_MSG:
QueueByte(MSG_CMD_ACK);
break;
default:
LOG(LOG_MISC,"MPU401:Unhandled command %X",val);
QueueByte(MSG_CMD_ACK);
break;
}
@ -67,7 +204,7 @@ static void MPU401_WriteData(Bit32u port,Bit8u val) {
}
static Bit8u MPU401_ReadData(Bit32u port) {
Bit8u ret=CMD_RET_ACK;
Bit8u ret=MSG_CMD_ACK;
if (mpu.queue_used) {
ret=mpu.queue[mpu.queue_pos];
mpu.queue_pos++;
@ -79,6 +216,9 @@ static Bit8u MPU401_ReadData(Bit32u port) {
void MPU401_Init(Section* sec) {
Section_prop * section=static_cast<Section_prop *>(sec);
if(!section->Get_bool("mpu401")) return;
if (!MIDI_Available()) return;
IO_RegisterWriteHandler(0x330,&MPU401_WriteData,"MPU401");