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https://github.com/holub/mame
synced 2025-05-30 17:41:47 +03:00
(MESS) Mac: added "image" card which allows direct read/write access to any vMac/BasiliskII compatible image under 256 MB, including HD floppies. Not bootable, and do NOT try to swap the disk. [Rob Braun, R. Belmont]
This commit is contained in:
R. Belmont
parent
a0dbae3208
commit
51c1cbd056
2
.gitattributes
vendored
2
.gitattributes
vendored
@ -7131,6 +7131,8 @@ src/mess/machine/nubus.c svneol=native#text/plain
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src/mess/machine/nubus.h svneol=native#text/plain
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src/mess/machine/nubus_asntmc3b.c svneol=native#text/plain
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src/mess/machine/nubus_asntmc3b.h svneol=native#text/plain
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src/mess/machine/nubus_image.c svneol=native#text/plain
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src/mess/machine/nubus_image.h svneol=native#text/plain
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src/mess/machine/null_modem.c svneol=native#text/plain
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src/mess/machine/null_modem.h svneol=native#text/plain
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src/mess/machine/odyssey2.c svneol=native#text/plain
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@ -68,6 +68,7 @@
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#include "video/nubus_radiustpd.h"
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#include "video/nubus_wsportrait.h"
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#include "machine/nubus_asntmc3b.h"
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#include "machine/nubus_image.h"
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#include "video/nubus_m2video.h"
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#include "video/pds30_cb264.h"
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#include "video/pds30_procolor816.h"
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@ -853,6 +854,7 @@ static SLOT_INTERFACE_START(mac_nubus_cards)
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SLOT_INTERFACE("824gc", NUBUS_824GC) /* Apple 8*24 Graphics Card */
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SLOT_INTERFACE("cb264", NUBUS_CB264) /* RasterOps ColorBoard 264 */
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SLOT_INTERFACE("vikbw", NUBUS_VIKBW) /* Moniterm Viking board */
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SLOT_INTERFACE("image", NUBUS_IMAGE) /* Disk Image Pseudo-Card */
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SLOT_INTERFACE("specpdq", NUBUS_SPECPDQ) /* SuperMac Spectrum PDQ */
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SLOT_INTERFACE("m2hires", NUBUS_M2HIRES) /* Apple Macintosh II Hi-Resolution Card */
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SLOT_INTERFACE("spec8s3", NUBUS_SPEC8S3) /* SuperMac Spectrum/8 Series III */
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@ -871,6 +873,9 @@ static SLOT_INTERFACE_START(mac_pds030_cards)
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SLOT_INTERFACE("mc30", PDS030_XCEEDMC30) // Micron/XCEED Technology MacroColor 30
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SLOT_INTERFACE_END
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static SLOT_INTERFACE_START(mac_lcpds_cards)
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SLOT_INTERFACE_END
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/***************************************************************************
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MACHINE DRIVERS
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***************************************************************************/
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@ -1149,6 +1154,9 @@ static MACHINE_CONFIG_DERIVED( maclc, macii )
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MCFG_NUBUS_SLOT_REMOVE("nbe")
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MCFG_NUBUS_BUS_REMOVE("nubus")
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MCFG_NUBUS_BUS_ADD("pds", "maincpu", nubus_intf)
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MCFG_NUBUS_SLOT_ADD("pds","lcpds", mac_lcpds_cards, NULL, NULL)
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MCFG_ASC_REPLACE("asc", C15M, ASC_TYPE_V8, mac_asc_irq)
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MCFG_SOUND_ROUTE(0, "lspeaker", 1.0)
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MCFG_SOUND_ROUTE(1, "rspeaker", 1.0)
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254
src/mess/machine/nubus_image.c
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254
src/mess/machine/nubus_image.c
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@ -0,0 +1,254 @@
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/***************************************************************************
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nubus_image.c - synthetic NuBus card to allow reading/writing "raw"
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HFS images, including floppy images (DD and HD) and vMac/Basilisk HDD
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volumes up to 256 MB in size.
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***************************************************************************/
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#include "emu.h"
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#include "machine/nubus_image.h"
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#define IMAGE_ROM_REGION "image_rom"
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#define IMAGE_DISK0_TAG "nb_disk"
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#define MESSIMG_DISK_SECTOR_SIZE (512)
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// messimg_disk_image_device
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class messimg_disk_image_device : public device_t,
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public device_image_interface
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{
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public:
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// construction/destruction
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messimg_disk_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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// image-level overrides
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virtual iodevice_t image_type() const { return IO_QUICKLOAD; }
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virtual bool is_readable() const { return 1; }
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virtual bool is_writeable() const { return 1; }
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virtual bool is_creatable() const { return 0; }
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virtual bool must_be_loaded() const { return 0; }
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virtual bool is_reset_on_load() const { return 0; }
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virtual const char *image_interface() const { return NULL; }
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virtual const char *file_extensions() const { return "img"; }
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virtual const option_guide *create_option_guide() const { return NULL; }
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virtual bool call_load();
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virtual void call_unload();
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disk_data *token() { return &m_token; }
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protected:
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// device-level overrides
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virtual void device_config_complete();
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virtual void device_start();
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virtual void device_reset();
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disk_data m_token;
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};
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// device type definition
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extern const device_type MESSIMG_DISK;
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const device_type MESSIMG_DISK = &device_creator<messimg_disk_image_device>;
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messimg_disk_image_device::messimg_disk_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: device_t(mconfig, MESSIMG_DISK, "Mac image", tag, owner, clock),
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device_image_interface(mconfig, *this)
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{
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}
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void messimg_disk_image_device::device_config_complete()
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{
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update_names(MESSIMG_DISK, "disk", "disk");
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};
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/***************************************************************************
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get_safe_disk_token - makes sure that the passed in device is a messimg disk
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***************************************************************************/
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INLINE disk_data *get_safe_disk_token(device_t *device) {
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assert(device != NULL);
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assert(device->type() == MESSIMG_DISK);
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return (disk_data *) downcast<messimg_disk_image_device *>(device)->token();
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}
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/*-------------------------------------------------
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device start callback
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-------------------------------------------------*/
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void messimg_disk_image_device::device_start()
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{
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disk_data *disk = get_safe_disk_token(this);
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disk->device = this;
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disk->image = this;
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disk->data = (UINT8 *)NULL;
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if (exists() && fseek(0, SEEK_END) == 0)
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{
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disk->size = (UINT32)ftell();
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}
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}
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bool messimg_disk_image_device::call_load()
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{
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disk_data *disk = get_safe_disk_token(this);
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// we're not ejectable for the time being
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if (disk->data)
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{
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return IMAGE_INIT_FAIL;
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}
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if (disk->size > (256*1024*1024))
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{
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printf("Mac image too large: must be 256MB or less!\n");
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disk->size = 0;
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return IMAGE_INIT_FAIL;
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}
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disk->data = (UINT8 *)auto_alloc_array_clear(machine(), UINT32, disk->size/sizeof(UINT32));
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fseek(0, SEEK_SET);
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fread(disk->data, disk->size);
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return IMAGE_INIT_PASS;
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}
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void messimg_disk_image_device::call_unload()
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{
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disk_data *disk = get_safe_disk_token(this);
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// TODO: track dirty sectors and only write those
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fseek(0, SEEK_SET);
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fwrite(disk->data, disk->size);
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// disk->size = 0;
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// free(disk->data);
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}
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/*-------------------------------------------------
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device reset callback
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-------------------------------------------------*/
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void messimg_disk_image_device::device_reset()
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{
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}
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MACHINE_CONFIG_FRAGMENT( image )
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MCFG_DEVICE_ADD(IMAGE_DISK0_TAG, MESSIMG_DISK, 0)
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MACHINE_CONFIG_END
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ROM_START( image )
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ROM_REGION(0x2000, IMAGE_ROM_REGION, 0)
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ROM_LOAD( "nb_fake.bin", 0x000000, 0x002000, CRC(b6c46215) SHA1(5dc805658c1731d189e2cb289c611539680b87f4) )
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ROM_END
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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const device_type NUBUS_IMAGE = &device_creator<nubus_image_device>;
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//-------------------------------------------------
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// machine_config_additions - device-specific
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// machine configurations
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//-------------------------------------------------
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machine_config_constructor nubus_image_device::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( image );
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}
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//-------------------------------------------------
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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const rom_entry *nubus_image_device::device_rom_region() const
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{
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return ROM_NAME( image );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// nubus_image_device - constructor
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//-------------------------------------------------
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nubus_image_device::nubus_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, NUBUS_IMAGE, "Disk Image Pseudo-Card", tag, owner, clock),
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device_nubus_card_interface(mconfig, *this)
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{
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m_shortname = "nb_image";
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}
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nubus_image_device::nubus_image_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, type, name, tag, owner, clock),
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device_nubus_card_interface(mconfig, *this)
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{
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m_shortname = "nb_image";
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void nubus_image_device::device_start()
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{
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UINT32 slotspace;
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UINT32 superslotspace;
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// set_nubus_device makes m_slot valid
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set_nubus_device();
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install_declaration_rom(this, IMAGE_ROM_REGION);
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slotspace = get_slotspace();
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superslotspace = get_super_slotspace();
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// printf("[image %p] slotspace = %x, super = %x\n", this, slotspace, superslotspace);
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m_nubus->install_device(slotspace, slotspace+3, read32_delegate(FUNC(nubus_image_device::image_r), this), write32_delegate(FUNC(nubus_image_device::image_w), this));
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m_nubus->install_device(superslotspace, superslotspace+((256*1024*1024)-1), read32_delegate(FUNC(nubus_image_device::image_super_r), this), write32_delegate(FUNC(nubus_image_device::image_super_w), this));
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device_t *device0 = subdevice(IMAGE_DISK0_TAG);
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m_image = (disk_data *) downcast<messimg_disk_image_device *>(device0)->token();
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image_mapping = (UINT32 *)NULL;
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void nubus_image_device::device_reset()
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{
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image_length = m_image->size;
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image_mapping = (UINT32 *)m_image->data;
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}
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WRITE32_MEMBER( nubus_image_device::image_w )
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{
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}
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READ32_MEMBER( nubus_image_device::image_r )
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{
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return image_length;
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}
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WRITE32_MEMBER( nubus_image_device::image_super_w )
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{
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data = ((data & 0xff) << 24) | ((data & 0xff00) << 8) | ((data & 0xff0000) >> 8) | ((data & 0xff000000) >> 24);
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mem_mask = ((mem_mask & 0xff) << 24) | ((mem_mask & 0xff00) << 8) | ((mem_mask & 0xff0000) >> 8) | ((mem_mask & 0xff000000) >> 24);
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COMBINE_DATA(&image_mapping[offset]);
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}
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READ32_MEMBER( nubus_image_device::image_super_r )
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{
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UINT32 data = image_mapping[offset];
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return ((data & 0xff) << 24) | ((data & 0xff00) << 8) | ((data & 0xff0000) >> 8) | ((data & 0xff000000) >> 24);
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}
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58
src/mess/machine/nubus_image.h
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58
src/mess/machine/nubus_image.h
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@ -0,0 +1,58 @@
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#pragma once
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#ifndef __NUBUS_IMAGE_H__
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#define __NUBUS_IMAGE_H__
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#include "emu.h"
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#include "machine/nubus.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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struct disk_data
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{
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device_t *device;
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UINT32 size;
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UINT8 *data;
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device_image_interface *image;
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};
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// ======================> nubus_image_device
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class nubus_image_device :
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public device_t,
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public device_nubus_card_interface
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{
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public:
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// construction/destruction
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nubus_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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nubus_image_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock);
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// optional information overrides
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virtual machine_config_constructor device_mconfig_additions() const;
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virtual const rom_entry *device_rom_region() const;
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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DECLARE_READ32_MEMBER(image_r);
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DECLARE_WRITE32_MEMBER(image_w);
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DECLARE_READ32_MEMBER(image_super_r);
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DECLARE_WRITE32_MEMBER(image_super_w);
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public:
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UINT32 image_length;
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UINT32 *image_mapping;
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disk_data *m_image;
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};
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// device type definition
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extern const device_type NUBUS_IMAGE;
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#endif /* __NUBUS_IMAGE_H__ */
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@ -715,6 +715,7 @@ $(MESSOBJ)/apple.a: \
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$(MESS_VIDEO)/nubus_radiustpd.o \
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$(MESS_VIDEO)/nubus_m2video.o \
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$(MESS_MACHINE)/nubus_asntmc3b.o \
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$(MESS_MACHINE)/nubus_image.o \
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$(MESS_VIDEO)/nubus_wsportrait.o \
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$(MESS_VIDEO)/pds30_cb264.o \
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$(MESS_VIDEO)/pds30_procolor816.o \
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