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Adding serial port FOSSIL driver support

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2083
This commit is contained in:
Dean Beeler 2004-12-22 10:46:16 +00:00
parent 7c75bcef02
commit 26062b0e15
1 changed files with 50 additions and 0 deletions
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50
src/hardware/softmodem.cpp
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@ -99,6 +99,8 @@ struct telnetClient {
};
static Bitu call_int14;
#if 1
static void toUpcase(char *buffer) {
@ -548,6 +550,7 @@ public:
Bitu usesize;
Bit8u txval;
/* Check for eventual break command */
if (!mhd.commandmode) mhd.cmdpause++;
/* Handle incoming data from serial port, read as much as available */
@ -605,6 +608,7 @@ public:
/* Filter telnet commands */
TelnetEmulation(tmpbuf, result);
} else {
rqueue->adds(tmpbuf,result);
}
mhd.cmdpause = 0;
@ -646,7 +650,11 @@ public:
}
bool CanRecv(void) {
if(rqueue->inuse()) {
return true;
} else {
return false;
}
}
@ -694,6 +702,43 @@ protected:
CSerialModem *csm;
static Bitu INT14_FOSSIL(void) {
switch (reg_ah) {
case 0x01:
// Serial - Write character to port
csm->tqueue->addb(reg_al);
reg_ah = csm->read_reg(0xd) & 0x7f;
break;
case 0x02:
// FOSSIL - Receive character with wait
//LOG_MSG("FOSSIL: Calling get to receive character", reg_ah);
csm->mctrl |= MC_RTS;
while(!csm->rqueue->inuse()) {
// Wait for byte. Yes, I realize that this locks up DosBox, but
// it would an oldskool system as well.
csm->Timer();
}
reg_al = csm->rqueue->getb();
reg_ah = 0;
break;
case 0x03:
//LOG_MSG("FOSSIL: Calling get port status", reg_ah);
// Serial - Get port status
csm->mctrl |= MC_RTS;
reg_ah = csm->read_reg(0xd) ; // Line status
if(csm->rqueue->inuse()) reg_ah |= 0x1;
reg_al = csm->read_reg(0xe); // Modem status
break;
default:
LOG_MSG("FOSSIL: Func 0x%x not handled", reg_ah);
break;
}
return CBRET_NONE;
}
void MODEM_Init(Section* sec) {
unsigned long args = 1;
@ -739,6 +784,11 @@ void MODEM_Init(Section* sec) {
}
if(csm != NULL) seriallist.push_back(csm);
//Enable FOSSIL support (GTERM, etc)
call_int14=CALLBACK_Allocate();
CALLBACK_Setup(call_int14,&INT14_FOSSIL,CB_IRET);
RealSetVec(0x14,CALLBACK_RealPointer(call_int14));
}