eaw/zSoft
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Updates to the FDD support code

Browse Source
This commit is contained in:
Philip Smart
2022-01-29 22:30:26 +00:00
parent a98b4d35ce
commit 38880a135f
8 changed files with 163 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
include/emumz.h
View File

@@ -137,15 +137,20 @@
// Floppy Disk Control bits.
//
#define FDD_IOP_DISK_SELECT_NO 0xE0 // Floppy disk selected drive number.
#define FDD_IOP_SIDE 0x04 // IOP Control parameters: Disk side selected.
#define FDD_IOP_SECTOR_REQ 0x02 // IOP Control parameters: Sector request service flag/
#define FDD_IOP_SECTOR_DIR 0x01 // IOP Control parameters: Sector request direction, 0 = write, host has written into the cache, 1 = read, IOP needs to write the requested sector into cache.
#define FDD_IOP_SIDE 0x08 // IOP Control parameters: Disk side selected.
#define FDD_IOP_SERVICE_REQ 0x04 // IOP Control parameters: Service request flag.
#define FDD_IOP_REQ_MODE 0x03 // IOP Control parameters: 00 = NOP, 01 = sector is written into cache (IOP->WD1793), 10 = sector is read from cache (WD1793->IOP), 11 = Obtain sector information
#define FDD_IOP_REQ_NOP 0x00 // FDD request is to do nothing.
#define FDD_IOP_REQ_READ 0x01 // FDD request to read a sector.
#define FDD_IOP_REQ_WRITE 0x02 // FDD request to write a sector.
#define FDD_IOP_REQ_INFO 0x03 // FDD request to get current information on disk sector/rpm.
#define FDD_DISK_BUSY 0x40 // Floppy disk BUSY signal state.
#define FDD_DISK_DRQ 0x20 // Floppy disk DRQ signal state.
#define FDD_DISK_MOTORON 0x10 // Floppy disk MOTOR signal state, 0 = on.
#define FDD_DISK_DDEN 0x10 // Floppy disk Double Density DDEN signal state, 0 = double density.
#define FDD_DISK_SELECT_NO 0x07 // Floppy disk selected drive number.
#define FDD_CTRL_READY 0x01 // Flag to indicate the I/O processor is ready. 1 = ready, 0 = busy.
#define FDD_CTRL_SECTOR 0x0E // Addressed sector size, may differ from disk geometry
#define FDD_CTRL_TYPE 0xF0 // Configuration of the controller for a given disk type.
#define FDD_DISK_0_WRITEN 0x02 // Write enable Disk 0
#define FDD_DISK_1_WRITEN 0x08 // Write enable Disk 1
@@ -204,8 +209,8 @@
#define MZ_EMU_REG_CMT3 8 // CMT (tape drive) status register.
#define MZ_EMU_REG_FDD 9 // Floppy Disk Drive configuration register 1.
#define MZ_EMU_REG_FDD2 10 // Floppy Disk Drive configuration register 2.
#define MZ_EMU_REG_FDD3 11 // Floppy Disk Drive configuration register 3.
#define MZ_EMU_REG_FDD4 12 // Floppy Disk Drive configuration register 4.
#define MZ_EMU_REG_FREE1 11 // Spare register 1
#define MZ_EMU_REG_FREE2 12 // Spare register 2
#define MZ_EMU_REG_ROMS 13 // Options ROMS configuration
#define MZ_EMU_REG_SWITCHES 14 // Hardware switches, MZ800 = 3:0
#define MZ_EMU_REG_CTRL 15 // Emulator control register.
@@ -222,8 +227,8 @@
#define MZ_EMU_ADDR_REG_CMT3 MZ_EMU_REG_BASE_ADDR + 8 // Address of the CMT (tape drive) status register.
#define MZ_EMU_ADDR_REG_FDD MZ_EMU_REG_BASE_ADDR + 9 // Address of the Floppy Disk Drive configuration register 1.
#define MZ_EMU_ADDR_REG_FDD2 MZ_EMU_REG_BASE_ADDR + 10 // Address of the Floppy Disk Drive configuration register 2.
#define MZ_EMU_ADDR_REG_FDD3 MZ_EMU_REG_BASE_ADDR + 11 // Address of the Floppy Disk Drive configuration register 3.
#define MZ_EMU_ADDR_REG_FDD4 MZ_EMU_REG_BASE_ADDR + 12 // Address of the Floppy Disk Drive configuration register 4.
#define MZ_EMU_ADDR_REG_FREE1 MZ_EMU_REG_BASE_ADDR + 11 // Address of the unused regiser 1.
#define MZ_EMU_ADDR_REG_FREE2 MZ_EMU_REG_BASE_ADDR + 12 // Address of the unused regiser 2.
#define MZ_EMU_ADDR_REG_ROMS MZ_EMU_REG_BASE_ADDR + 13 // Address of the optional ROMS configuration register.
#define MZ_EMU_ADDR_REG_SWITCHES MZ_EMU_REG_BASE_ADDR + 14 // Address of the Hardware configuration switches.
#define MZ_EMU_ADDR_REG_CTRL MZ_EMU_REG_BASE_ADDR + 15 // Address of the Control reigster.
@@ -381,6 +386,17 @@ enum ACTIONMODE {
ACTION_TOGGLECHOICE = 0x02, // Action callback implements toggle feature.
};
// Error return codes from processing a floppy disk request.
//
enum FLOPPYERRORCODES {
FLPYERR_NOERROR = 0x00, // No error in processing detected.
FLPYERR_SECTOR_NOT_FOUND = 0x01, // Sector wasnt found in image.
FLPYERR_TRACK_NOT_FOUND = 0x02, // Track wasnt found in image.
FLPYERR_HEAD_NOT_FOUND = 0x03, // Head wasnt found in image.
FLPYERR_WRITE_ERROR = 0x04, // Write error, ie. permissions, disk full or hardware error (SD card removed).
FLPYERR_DISK_ERROR = 0x05, // Generic error for any disk retrieval error, ie. cant open, cant read etc.
};
// Types of disks recognised by the Sharp MZ hardware.
// These definitions are coded into the WD1773 controller so any changes in this source file must be reflected in the controller VHDL.
enum DISKTYPES {
@@ -392,7 +408,7 @@ enum DISKTYPES {
DISKTYPE_350K = 0x05, // 35T DS 10S 512B 350K
DISKTYPE_280K = 0x06, // 35T DS 16S 256B 280K
DISKTYPE_400K = 0x07, // 40T 2H 10S 512B 400K
DISKTYPE_TBD4 = 0x08, //
DISKTYPE_1440K = 0x08, // 80T 2H 18S 512B 1440K
DISKTYPE_TBD5 = 0x09, //
DISKTYPE_TBD6 = 0x0A, //
DISKTYPE_TBD7 = 0x0B, //
@@ -727,7 +743,7 @@ const t_floppyDef FLOPPY_DEFINITIONS[16]= { { .tracks = 40, .heads = 2,
{ .tracks = 35, .heads = 2, .sectors = 10, .sectorSize = 512, .rpm = 300 }, // 5 35T DS 10S 512B 350K
{ .tracks = 35, .heads = 2, .sectors = 16, .sectorSize = 256, .rpm = 300 }, // 6 35T DS 16S 256B 280K
{ .tracks = 40, .heads = 2, .sectors = 10, .sectorSize = 512, .rpm = 300 }, // 7 40T 2H 10S 512B 400K
{ .tracks = 40, .heads = 2, .sectors = 16, .sectorSize = 256, .rpm = 300 }, // 8
{ .tracks = 80, .heads = 2, .sectors = 18, .sectorSize = 512, .rpm = 300 }, // 8 80T 2H 18S 512B 1440K
{ .tracks = 40, .heads = 2, .sectors = 16, .sectorSize = 256, .rpm = 300 }, // 9
{ .tracks = 40, .heads = 2, .sectors = 16, .sectorSize = 256, .rpm = 300 }, // 10
{ .tracks = 40, .heads = 2, .sectors = 16, .sectorSize = 256, .rpm = 300 }, // 11
@@ -824,6 +840,7 @@ const char *SHARPMZ_FDD_DISK_TYPE[] = { "40T DS 16S 256B 320K",
"35T DS 10S 512B 350K",
"35T DS 16S 256B 280K",
"40T DS 10S 512B 400K",
"80T DS 18S 512B 1440K",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
const char *SHARPMZ_FDD_IMAGE_POLARITY[] = { "Normal", "Inverted" };
const char *SHARPMZ_FDD_UPDATE_MODE[] = { "Read/Write", "Read Only" };
@@ -1017,7 +1034,7 @@ void EMZNextMountDrive0(enum ACTIONMODE);
void EMZNextMountDrive1(enum ACTIONMODE);
void EMZNextMountDrive2(enum ACTIONMODE);
void EMZNextMountDrive3(enum ACTIONMODE);
short EMZProcessFDDRequest(uint8_t, uint8_t, uint8_t, uint8_t);
enum FLOPPYERRORCODES EMZProcessFDDRequest(uint8_t, uint8_t, uint8_t, uint8_t, uint16_t *, uint16_t *);
short EMZCheckFDDImage(char *);
short EMZSetFDDImageParams(char *, uint8_t, enum IMAGETYPES);