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/*
* VPC-XT Revision 2.0
*
* Title : Host Dependent General Include File (Tk43 Version)
*
* Description : Any defines etc that may change between hosts are
* placed in this file.
*
* Author : Henry Nash
*
* Notes : This file is included by xt.h and should NOT be
* included directly by any other file.
*/
/* static char SccsID[]="@(#)host_gen.h 1.11 4/9/91 Copyright Insignia Solutions Ltd." */
/*
* Definition of signed 8 bit arithmetic unit of storage
*/
typedef char signed_char;
/*
* Root directory - this is where fonts are found, and the default
* place for the data directory.
*/
#define ROOT host_get_spc_home()
extern char *host_get_spc_home();
/*
* Host-specific defaults.
*/
#define DEFLT_HDISK_SIZE 10
#define DEFLT_FSA_NAME "fsa_dir"
/*
* The rate at which timer signals/events are generated for softPC.
* This is defined as the number of microseconds between each tick.
* On the Sun3 these are the same rate as expected by the PC.
*/
#define SYSTEM_TICK_INTV 54925
/*
* The amount of memory allowed for the fact that we do not wrap
* all string instructions as we should. Stuck at end of Intel Memory.
*/
#define NOWRAP_PROTECTION 0x10020
/*
* The following macros are used to access Intel address space
*
* NOTE: A write check for Delta needs to be added
*/
#define write_intel_word(s, o, v) sas_storew(effective_addr(s,o),v)
#define write_intel_byte(s, o, v) sas_store(effective_addr(s,o),v)
#define write_intel_byte_string(s, o, v, l) sas_stores(effective_addr(s,o),v,l)
#define read_intel_word(s, o, v) sas_loadw(effective_addr(s,o),v)
#define read_intel_byte(s, o, v) sas_load(effective_addr(s,o),v)
#define read_intel_byte_string(s, o, v, l) sas_loads(effective_addr(s,o),v,l)
#define push_word(w) setSP((getSP()-2) & 0xffff);\
write_intel_word(getSS(), getSP(), w)
#define push_byte(b) setSP((getSP()-1) & 0xffff);\
write_intel_byte(getSS(), getSP(), b)
#define pop_word(w) read_intel_word(getSS(), getSP(), w);\
setSP((getSP()+2) & 0xffff)
#define pop_byte(b) read_intel_byte(getSS(), getSP(), b);\
setSP((getSP()+1) & 0xffff)
/*
* Memory size used by reset.c to initialise the appropriate BIOS variable.
*/
#define host_get_memory_size() 640
typedef half_word HALF_WORD_BIT_FIELD;
typedef word WORD_BIT_FIELD;
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