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/*************************************************************************
* *
* $Id: s100_mdriveh.c 1940 2008-06-13 05:28:57Z hharte $ *
* *
* Copyright (c) 2007-2008 Howard M. Harte. *
* http://www.hartetec.com *
* *
* 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 HOWARD M. HARTE 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 Howard M. Harte shall *
* not be used in advertising or otherwise to promote the sale, use or *
* other dealings in this Software without prior written authorization *
* Howard M. Harte. *
* *
* SIMH Interface based on altairz80_hdsk.c, by Peter Schorn. *
* *
* Module Description: *
* CompuPro M-DRIVE/H Controller module for SIMH. *
* *
* Environment: *
* User mode only *
* *
*************************************************************************/
/*#define DBG_MSG */
#include "altairz80_defs.h"
#if defined (_WIN32)
#include <windows.h>
#endif
#ifdef DBG_MSG
#define DBG_PRINT(args) printf args
#else
#define DBG_PRINT(args)
#endif
/* Debug flags */
#define ERROR_MSG (1 << 0)
#define SEEK_MSG (1 << 1)
#define RD_DATA_MSG (1 << 3)
#define WR_DATA_MSG (1 << 4)
#define VERBOSE_MSG (1 << 7)
#define MDRIVEH_MAX_DRIVES 8
typedef struct {
PNP_INFO pnp; /* Plug and Play */
uint32 dma_addr; /* DMA Transfer Address */
UNIT uptr[MDRIVEH_MAX_DRIVES];
uint8 *storage[MDRIVEH_MAX_DRIVES];
} MDRIVEH_INFO;
static MDRIVEH_INFO mdriveh_info_data = { { 0x0, 0, 0xC6, 2 } };
static MDRIVEH_INFO *mdriveh_info = &mdriveh_info_data;
extern uint32 PCX;
extern t_stat set_iobase(UNIT *uptr, int32 val, char *cptr, void *desc);
extern t_stat show_iobase(FILE *st, UNIT *uptr, int32 val, void *desc);
extern uint32 sim_map_resource(uint32 baseaddr, uint32 size, uint32 resource_type,
int32 (*routine)(const int32, const int32, const int32), uint8 unmap);
extern REG *sim_PC;
#define UNIT_V_MDRIVEH_WLK (UNIT_V_UF + 0) /* write locked */
#define UNIT_MDRIVEH_WLK (1 << UNIT_V_MDRIVEH_WLK)
#define UNIT_V_MDRIVEH_VERBOSE (UNIT_V_UF + 1) /* verbose mode, i.e. show error messages */
#define UNIT_MDRIVEH_VERBOSE (1 << UNIT_V_MDRIVEH_VERBOSE)
#define MDRIVEH_CAPACITY (512 * 1000) /* Default M-DRIVE/H Capacity */
#define MDRIVEH_NONE 0
static t_stat mdriveh_reset(DEVICE *mdriveh_dev);
static int32 mdrivehdev(const int32 port, const int32 io, const int32 data);
static uint8 MDRIVEH_Read(const uint32 Addr);
static uint8 MDRIVEH_Write(const uint32 Addr, uint8 cData);
static UNIT mdriveh_unit[] = {
{ UDATA (NULL, UNIT_FIX + UNIT_DISABLE + UNIT_ROABLE, MDRIVEH_CAPACITY) },
{ UDATA (NULL, UNIT_FIX + UNIT_DISABLE + UNIT_DIS + UNIT_ROABLE, MDRIVEH_CAPACITY) },
{ UDATA (NULL, UNIT_FIX + UNIT_DISABLE + UNIT_DIS + UNIT_ROABLE, MDRIVEH_CAPACITY) },
{ UDATA (NULL, UNIT_FIX + UNIT_DISABLE + UNIT_DIS + UNIT_ROABLE, MDRIVEH_CAPACITY) },
{ UDATA (NULL, UNIT_FIX + UNIT_DISABLE + UNIT_DIS + UNIT_ROABLE, MDRIVEH_CAPACITY) },
{ UDATA (NULL, UNIT_FIX + UNIT_DISABLE + UNIT_DIS + UNIT_ROABLE, MDRIVEH_CAPACITY) },
{ UDATA (NULL, UNIT_FIX + UNIT_DISABLE + UNIT_DIS + UNIT_ROABLE, MDRIVEH_CAPACITY) },
{ UDATA (NULL, UNIT_FIX + UNIT_DISABLE + UNIT_DIS + UNIT_ROABLE, MDRIVEH_CAPACITY) }
};
static REG mdriveh_reg[] = {
{ NULL }
};
static MTAB mdriveh_mod[] = {
{ MTAB_XTD|MTAB_VDV, 0, "IOBASE", "IOBASE", &set_iobase, &show_iobase, NULL },
{ UNIT_MDRIVEH_WLK, 0, "WRTENB", "WRTENB", NULL },
{ UNIT_MDRIVEH_WLK, UNIT_MDRIVEH_WLK, "WRTLCK", "WRTLCK", NULL },
/* quiet, no warning messages */
{ UNIT_MDRIVEH_VERBOSE, 0, "QUIET", "QUIET", NULL },
/* verbose, show warning messages */
{ UNIT_MDRIVEH_VERBOSE, UNIT_MDRIVEH_VERBOSE, "VERBOSE", "VERBOSE", NULL },
{ 0 }
};
#define TRACE_PRINT(level, args) if(mdriveh_dev.dctrl & level) { \
printf args; \
}
/* Debug Flags */
static DEBTAB mdriveh_dt[] = {
{ "ERROR", ERROR_MSG },
{ "SEEK", SEEK_MSG },
{ "RDDATA", RD_DATA_MSG },
{ "WRDATA", WR_DATA_MSG },
{ "VERBOSE",VERBOSE_MSG },
{ NULL, 0 }
};
DEVICE mdriveh_dev = {
"MDRIVEH", mdriveh_unit, mdriveh_reg, mdriveh_mod,
MDRIVEH_MAX_DRIVES, 10, 31, 1, MDRIVEH_MAX_DRIVES, MDRIVEH_MAX_DRIVES,
NULL, NULL, &mdriveh_reset,
NULL, NULL, NULL,
&mdriveh_info_data, (DEV_DISABLE | DEV_DIS | DEV_DEBUG), ERROR_MSG,
mdriveh_dt, NULL, "Compupro Memory Drive MDRIVEH"
};
/* Reset routine */
static t_stat mdriveh_reset(DEVICE *dptr)
{
uint8 i;
PNP_INFO *pnp = (PNP_INFO *)dptr->ctxt;
if(dptr->flags & DEV_DIS) { /* Disconnect ROM and I/O Ports */
sim_map_resource(pnp->io_base, pnp->io_size, RESOURCE_TYPE_IO, &mdrivehdev, TRUE);
} else {
/* Connect MDRIVEH at base address */
if(sim_map_resource(pnp->io_base, pnp->io_size, RESOURCE_TYPE_IO, &mdrivehdev, FALSE) != 0) {
printf("%s: error mapping I/O resource at 0x%04x\n", __FUNCTION__, pnp->io_base);
return SCPE_ARG;
}
}
for(i=0; i<MDRIVEH_MAX_DRIVES; i++) {
mdriveh_info->uptr[i] = dptr->units[i];
if((dptr->flags & DEV_DIS) || (dptr->units[i].flags & UNIT_DIS)) {
if (dptr->units[i].flags & UNIT_MDRIVEH_VERBOSE)
printf("MDRIVEH: Unit %d disabled", i);
if(mdriveh_info->storage[i] != NULL) {
if (dptr->units[i].flags & UNIT_MDRIVEH_VERBOSE)
printf(", freed 0x%p\n", mdriveh_info->storage[i]);
free(mdriveh_info->storage[i]);
mdriveh_info->storage[i] = NULL;
} else if (dptr->units[i].flags & UNIT_MDRIVEH_VERBOSE) {
printf(".\n");
}
} else {
if(mdriveh_info->storage[i] == NULL) {
mdriveh_info->storage[i] = calloc(1, 524288);
}
if (dptr->units[i].flags & UNIT_MDRIVEH_VERBOSE)
printf("MDRIVEH: Unit %d enabled, 512K at 0x%p\n", i, mdriveh_info->storage[i]);
}
}
return SCPE_OK;
}
static int32 mdrivehdev(const int32 port, const int32 io, const int32 data)
{
DBG_PRINT(("MDRIVEH: " ADDRESS_FORMAT " IO %s, Port %02x" NLP, PCX, io ? "WR" : "RD", port));
if(io) {
MDRIVEH_Write(port, data);
return 0;
} else {
return(MDRIVEH_Read(port));
}
}
#define MDRIVEH_DATA 0 /* R=Drive Status Register / W=DMA Address Register */
#define MDRIVEH_ADDR 1 /* R=Unused / W=Motor Control Register */
static uint8 MDRIVEH_Read(const uint32 Addr)
{
uint8 cData;
uint8 unit;
uint32 offset;
cData = 0xFF; /* default is High-Z Data */
switch(Addr & 0x1) {
case MDRIVEH_ADDR:
TRACE_PRINT(VERBOSE_MSG, ("MDRIVEH: " ADDRESS_FORMAT " RD Addr = 0x%02x" NLP,
PCX, cData));
break;
case MDRIVEH_DATA:
unit = (mdriveh_info->dma_addr & 0x380000) >> 19;
offset = mdriveh_info->dma_addr & 0x7FFFF;
if(mdriveh_info->storage[unit] != NULL) {
cData = mdriveh_info->storage[unit][offset];
}
TRACE_PRINT(RD_DATA_MSG, ("MDRIVEH: " ADDRESS_FORMAT " RD Data [%x:%05x] = 0x%02x" NLP,
PCX, unit, offset, cData));
/* Increment M-DRIVE/H Data Address */
mdriveh_info->dma_addr++;
mdriveh_info->dma_addr &= 0x3FFFFF;
break;
}
return (cData);
}
static uint8 MDRIVEH_Write(const uint32 Addr, uint8 cData)
{
uint8 result = 0;
uint8 unit;
uint32 offset;
switch(Addr & 0x1) {
case MDRIVEH_ADDR:
mdriveh_info->dma_addr <<= 8;
mdriveh_info->dma_addr &= 0x003FFF00;
mdriveh_info->dma_addr |= cData;
TRACE_PRINT(SEEK_MSG, ("MDRIVEH: " ADDRESS_FORMAT " DMA Address=%06x" NLP,
PCX, mdriveh_info->dma_addr));
break;
case MDRIVEH_DATA:
unit = (mdriveh_info->dma_addr & 0x380000) >> 19;
offset = mdriveh_info->dma_addr & 0x7FFFF;
if(mdriveh_info->storage[unit] != NULL) {
if(mdriveh_info->uptr[unit].flags & UNIT_MDRIVEH_WLK) {
TRACE_PRINT(WR_DATA_MSG, ("MDRIVEH: " ADDRESS_FORMAT " WR Data [%x:%05x] = Unit Write Locked" NLP,
PCX, unit, offset));
} else {
TRACE_PRINT(WR_DATA_MSG, ("MDRIVEH: " ADDRESS_FORMAT " WR Data [%x:%05x] = 0x%02x" NLP,
PCX, unit, offset, cData));
mdriveh_info->storage[unit][offset] = cData;
}
} else {
TRACE_PRINT(WR_DATA_MSG, ("MDRIVEH: " ADDRESS_FORMAT " WR Data [%x:%05x] = Unit OFFLINE" NLP,
PCX, unit, offset));
}
/* Increment M-DRIVE/H Data Address */
mdriveh_info->dma_addr++;
mdriveh_info->dma_addr &= 0x3FFFFF;
break;
}
return (result);
}