248 lines
9.6 KiB
C
248 lines
9.6 KiB
C
#ifndef GLOBALS_H
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#define GLOBALS_H
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/* Some definitions needed globally */
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#ifdef __MINGW32__
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#include <ctype.h>
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#endif
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/* Definition for enabling incrementing the R register for each M1 cycle */
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#define DO_INCR
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/* Definitions for enabling PUN: and LST: devices */
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#define USE_PUN // The pun.txt and lst.txt files will appear on drive A: user 0
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#define USE_LST
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/* Definitions for file/console based debugging */
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//#define DEBUG // Enables the internal debugger (enabled by default on vstudio debug builds)
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//#define iDEBUG // Enables instruction logging onto iDebug.log (for development debug only)
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//#define DEBUGLOG // Writes extensive call trace information to RunCPM.log
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//#define CONSOLELOG // Writes debug information to console instead of file
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//#define LOGBIOS_NOT 01 // If defined will not log this BIOS function number
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//#define LOGBIOS_ONLY 02 // If defines will log only this BIOS function number
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//#define LOGBDOS_NOT 06 // If defined will not log this BDOS function number
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//#define LOGBDOS_ONLY 22 // If defines will log only this BDOS function number
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#define LogName "RunCPM.log"
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/* RunCPM version for the greeting header */
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#define VERSION "6.0"
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#define VersionBCD 0x60
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/* Definition of which CCP to use (must define only one) */
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#define CCP_INTERNAL // If this is defined, an internal CCP will emulated
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//#define CCP_DR
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//#define CCP_CCPZ
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//#define CCP_ZCPR2
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//#define CCP_ZCPR3
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//#define CCP_Z80
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/* Definition of the CCP memory information */
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//
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#ifdef CCP_INTERNAL
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#define CCPname "INTERNAL v3.0" // Will use the CCP from ccp.h
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#define VersionCCP 0x30 // 0x10 and above reserved for Internal CCP
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#define BatchFCB (tmpFCB + 48)
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#define CCPaddr BDOSjmppage // Internal CCP has size 0
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#endif
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//
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#ifdef CCP_DR
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#define CCPname "CCP-DR." STR(TPASIZE) "K"
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#define VersionCCP 0x00 // Version to be used by INFO.COM
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#define BatchFCB (CCPaddr + 0x7AC) // Position of the $$$.SUB fcb on this CCP
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#define CCPaddr (BDOSjmppage-0x0800) // CCP memory address
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#endif
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//
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#ifdef CCP_CCPZ
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#define CCPname "CCP-CCPZ." STR(TPASIZE) "K"
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#define VersionCCP 0x01
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#define BatchFCB (CCPaddr + 0x7A) // Position of the $$$.SUB fcb on this CCP
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#define CCPaddr (BDOSjmppage-0x0800)
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#endif
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//
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#ifdef CCP_ZCPR2
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#define CCPname "CCP-ZCP2." STR(TPASIZE) "K"
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#define VersionCCP 0x02
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#define BatchFCB (CCPaddr + 0x5E) // Position of the $$$.SUB fcb on this CCP
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#define CCPaddr (BDOSjmppage-0x0800)
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#endif
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//
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#ifdef CCP_ZCPR3
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#define CCPname "CCP-ZCP3." STR(TPASIZE) "K"
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#define VersionCCP 0x03
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#define BatchFCB (CCPaddr + 0x5E) // Position of the $$$.SUB fcb on this CCP
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#define CCPaddr (BDOSjmppage-0x1000)
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#endif
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//
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#ifdef CCP_Z80
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#define CCPname "CCP-Z80." STR(TPASIZE) "K"
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#define VersionCCP 0x04
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#define BatchFCB (CCPaddr + 0x79E) // Position of the $$$.SUB fcb on this CCP
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#define CCPaddr (BDOSjmppage-0x0800)
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#endif
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//
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#ifndef CCPname
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#error No CCP defined
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#endif
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//
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#define STR_HELPER(x) #x
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#define STR(x) STR_HELPER(x)
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// #define CCPHEAD "\r\nRunCPM Version " VERSION " (CP/M " STR(TPASIZE) "K)\r\n"
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#define CCPHEAD "\r\nRunCPM [\e[1mv" VERSION "\e[0m] => CCP:[\e[1m" CCPname "\e[0m] TPA:[\e[1m" STR(TPASIZE) "K\e[0m]\r\n"
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#define NOSLASH // Will translate '/' to '_' on filenames to prevent directory errors
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//#define HASLUA // Will enable Lua scripting (BDOS call 254)
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// Should be passed externally per-platform with -DHASLUA
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//#define PROFILE // For measuring time taken to run a CP/M command
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// This should be enabled only for debugging purposes when trying to improve emulation speed
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#define NOHIGHUSER // Prevents the creation of user folders above 'F' (15) by programs
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// Original CP/M BDOS allows it, but I prefer to keep the folders clean
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/* Definition for CP/M 2.2 user number support */
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#define BATCHA // If this is defined, the $$$.SUB will be looked for on drive A:
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//#define BATCH0 // If this is defined, the $$$.SUB will be looked for on user area 0
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// The default behavior of DRI's CP/M 2.2 was to have $$$.SUB created on the current drive/user while looking for it
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// on drive A: current user, which made it complicated to run SUBMITs when not logged to drive A: user 0
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/* Some environment and type definitions */
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#ifndef TRUE
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#define FALSE 0
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#define TRUE 1
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#endif
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typedef signed char int8;
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typedef signed short int16;
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typedef signed int int32;
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typedef unsigned char uint8;
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typedef unsigned short uint16;
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typedef unsigned int uint32;
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#define LOW_DIGIT(x) ((x) & 0xf)
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#define HIGH_DIGIT(x) (((x) >> 4) & 0xf)
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#define LOW_REGISTER(x) ((x) & 0xff)
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#define HIGH_REGISTER(x) (((x) >> 8) & 0xff)
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#define SET_LOW_REGISTER(x, v) x = (((x) & 0xff00) | ((v) & 0xff))
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#define SET_HIGH_REGISTER(x, v) x = (((x) & 0xff) | (((v) & 0xff) << 8))
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#define WORD16(x) ((x) & 0xffff)
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/* CP/M Page 0 definitions */
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#define IOByte 0x03
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#define DSKByte 0x04
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/* CP/M disk definitions */
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#define BlkSZ 128 // CP/M block size
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#define BlkEX 128 // Number of blocks on an extension
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#define ExtSZ (BlkSZ * BlkEX)
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#define BlkS2 4096 // Number of blocks on a S2 (module)
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#define MaxEX 31 // Maximum value the EX field can take
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#define MaxS2 15 // Maximum value the S2 (modules) field can take - Can be set to 63 to emulate CP/M Plus
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#define MaxCR 128 // Maximum value the CR field can take
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#define MaxRC 128 // Maximum value the RC field can take
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/* CP/M memory definitions */
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#define TPASIZE 64 // Can be 60 for CP/M 2.2 compatibility or more, up to 64 for extra memory
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// Values other than 60 or 64 would require rebuilding the CCP
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// For TPASIZE<60 CCP ORG = (SIZEK * 1024) - 0x0C00
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#define BANKS 1 // Number of memory banks available
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static uint8 curBank = 1; // Number of the current RAM bank in use (1-x, not 0-x)
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static uint8 isXmove = FALSE; // Used by BIOS
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static uint8 srcBank = 1; // Source bank for memory MOVE
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static uint8 dstBank = 1; // Destination bank for memory MOVE
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static uint8 ioBank = 1; // Destination bank for sector IO
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#define PAGESIZE 64 * 1024 // RAM(plus ROM) needs to be 64K to avoid compatibility issues
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#define MEMSIZE PAGESIZE * BANKS // Total RAM size
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#if BANKS==1
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#define RAM_FAST // If this is defined, all RAM function calls become direct access (see below)
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// This saves about 2K on the Arduino code and should bring speed improvements
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#endif
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#ifdef RAM_FAST // Makes all function calls to memory access into direct RAM access (less calls / less code)
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static uint8 RAM[MEMSIZE];
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#define _RamSysAddr(a) &RAM[a]
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#define _RamRead(a) RAM[a]
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#define _RamRead16(a) ((RAM[((a) & 0xffff) + 1] << 8) | RAM[(a) & 0xffff])
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#define _RamWrite(a, v) RAM[a] = v
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#define _RamWrite16(a, v) RAM[a] = (v) & 0xff; RAM[(a) + 1] = (v) >> 8
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#endif
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// Size of the allocated pages (Minimum size = 1 page = 256 bytes)
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// BIOS Pages (512 bytes from the top of memory)
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#define BIOSjmppage (PAGESIZE - 512)
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#define BIOSpage (BIOSjmppage + 256)
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// BDOS Pages (depends on TPASIZE for external CCPs)
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#if defined CCP_INTERNAL
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#define BDOSjmppage (BIOSjmppage - 256)
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#define BDOSpage (BDOSjmppage + 16)
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#else
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#define BDOSjmppage (TPASIZE * 1024) - 1024
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#define BDOSpage (BDOSjmppage + 256)
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#endif
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#define DPBaddr (BIOSpage + 128) // Address of the Disk Parameter Block (Hardcoded in BIOS)
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#define DPHaddr (DPBaddr + 15) // Address of the Disk Parameter Header
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#define SCBaddr (BDOSpage + 3) // Address of the System Control Block
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#define tmpFCB (BDOSpage + 16) // Address of the temporary FCB
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/* Definition of global variables */
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static uint8 filename[17]; // Current filename in host filesystem format
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static uint8 newname[17]; // New filename in host filesystem format
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static uint8 fcbname[13]; // Current filename in CP/M format
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static uint8 pattern[13]; // File matching pattern in CP/M format
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static uint16 dmaAddr = 0x0080; // Current dmaAddr
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static uint8 oDrive = 0; // Old selected drive
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static uint8 cDrive = 0; // Currently selected drive
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static uint8 userCode = 0; // Current user code
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static uint16 roVector = 0;
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static uint16 loginVector = 0;
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static uint8 allUsers = FALSE; // true when dr is '?' in BDOS search first
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static uint8 allExtents = FALSE; // true when ex is '?' in BDOS search first
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static uint8 currFindUser = 0; // user number of current directory in BDOS search first on all user numbers
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static uint8 blockShift; // disk allocation block shift
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static uint8 blockMask; // disk allocation block mask
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static uint8 extentMask; // disk extent mask
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static uint16 firstBlockAfterDir; // first allocation block after directory
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static uint16 numAllocBlocks; // # of allocation blocks on disk
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static uint8 extentsPerDirEntry; // # of logical (16K) extents in a directory entry
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#define logicalExtentBytes (16*1024UL)
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static uint16 physicalExtentBytes;// # bytes described by 1 directory entry
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#define tohex(x) ((x) < 10 ? (x) + 48 : (x) + 87)
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/* Definition of externs to prevent precedence compilation errors */
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#ifdef __cplusplus // If building on Arduino
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extern "C"
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{
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#endif
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#ifndef RAM_FAST
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extern uint8* _RamSysAddr(uint16 address);
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extern void _RamWrite(uint16 address, uint8 value);
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#endif
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extern void _Bdos(void);
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extern void _Bios(void);
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extern void _HostnameToFCB(uint16 fcbaddr, uint8* filename);
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extern void _HostnameToFCBname(uint8* from, uint8* to);
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extern void _mockupDirEntry(void);
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extern uint8 match(uint8* fcbname, uint8* pattern);
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extern void _puts(const char* str);
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#ifdef __cplusplus // If building on Arduino
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}
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#endif
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#endif
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