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// kwl.c - KW11L Line Clock Emulator
//
// Copyright (c) 2002, Timothy M. Stark
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// TIMOTHY M STARK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Except as contained in this notice, the name of Timothy M Stark shall not
// be used in advertising or otherwise to promote the sale, use or other
// dealings in this Software without prior written authorization from
// Timothy M Stark.
#include "dev/dec/kwl.h"
void kwl_ResetClock(KWL_CLOCK *kwl)
{
MAP_IO *io = &kwl->ioMap;
CLKCSR = CLKCSR_DONE;
io->CancelInterrupt(io, 0);
}
int kwl_Tick(void *dptr)
{
KWL_CLOCK *kwl = (KWL_CLOCK *)dptr;
MAP_IO *io = &kwl->ioMap;
CLKCSR |= CLKCSR_DONE;
if (CLKCSR & CLKCSR_IE)
io->SendInterrupt(io, 0);
return TS10_OK;
}
int kwl_ReadIO(void *dptr, uint32 pAddr, uint16 *data, uint32 acc)
{
KWL_CLOCK *kwl = (KWL_CLOCK *)dptr;
*data = CLKCSR;
#ifdef DEBUG
if (dbg_Check(DBG_IOREGS))
dbg_Printf("%s: (R) CLKCSR (%o) => %06o\n",
kwl->Unit.devName, pAddr, *data);
#endif /* DEBUG */
return UQ_OK;
}
int kwl_WriteIO(void *dptr, uint32 pAddr, uint16 data, uint32 acc)
{
KWL_CLOCK *kwl = (KWL_CLOCK *)dptr;
MAP_IO *io = &kwl->ioMap;
if (pAddr & 1)
return UQ_OK;
// Update IE or DONE bit on Clock CSR register.
CLKCSR = (data & CLKCSR_RW) | (CLKCSR & ~CLKCSR_RW);
if (data & CLKCSR_DONE)
CLKCSR &= ~CLKCSR_DONE;
// Unless DONE+IE set, clear interrupt request.
if (((CLKCSR & CLKCSR_DONE) == 0) || ((CLKCSR & CLKCSR_IE) == 0))
io->CancelInterrupt(io, 0);
#ifdef DEBUG
if (dbg_Check(DBG_IOREGS))
dbg_Printf("%s: (W) CLKCSR (%o) <= %06o (Now: %06o)\n",
kwl->Unit.devName, pAddr, data, CLKCSR);
#endif /* DEBUG */
return UQ_OK;
}
// Create/Initialize KW11L device.
// Usage: create <device> <KW11L> ...
void *kwl_Create(MAP_DEVICE *newMap, int argc, char **argv)
{
KWL_CLOCK *kwl = NULL;
MAP_IO *io;
if (kwl = (KWL_CLOCK *)calloc(1, sizeof(KWL_CLOCK))) {
// First, set up its description,
kwl->Unit.devName = newMap->devName;
kwl->Unit.keyName = newMap->keyName;
kwl->Unit.emuName = newMap->emuName;
kwl->Unit.emuVersion = newMap->emuVersion;
kwl->Device = newMap->devParent->Device;
kwl->Callback = newMap->devParent->Callback;
kwl->System = newMap->devParent->sysDevice;
// Set up I/O map settings
io = &kwl->ioMap;
io->devName = kwl->Unit.devName;
io->keyName = kwl->Unit.keyName;
io->emuName = kwl->Unit.emuName;
io->emuVersion = kwl->Unit.emuVersion;
io->Device = kwl;
io->csrAddr = KWL_CSRADR;
io->nRegs = KWL_NREGS;
io->nVectors = KWL_NVECS;
io->intIPL = KWL_IPL;
io->intVector[0] = KWL_VEC;
io->ReadIO = kwl_ReadIO;
io->WriteIO = kwl_WriteIO;
// Assign that registers to QBA's I/O space.
kwl->Callback->SetMap(kwl->Device, io);
// Finally, link it to its mapping device.
newMap->Device = kwl;
newMap->Callback = kwl->Callback;
}
return kwl;
}
DEVICE kwl_Device =
{
KWL_KEY, // Device Type (Key) Name
KWL_NAME, // Emulator Name
KWL_VERSION, // Emulator Version
NULL, // Listing of devices
DF_SYSMAP, // Device Flags
DT_CLOCK, // Device Type
NULL, // Commands
NULL, // Set Commands
NULL, // Show Commands
kwl_Create, // Create Routine
NULL, // Configure Routine
NULL, // Delete Routine
NULL, // Reset Routine
NULL, // Attach Routine
NULL, // Detach Routine
NULL, // Info Routine
NULL, // Boot Routine
NULL, // Execute Routine
#ifdef DEBUG
NULL, // Debug Routine
#endif /* DEBUG */
};
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