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EnigmA Amiga Run 1997 February
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EnigmA AMIGA RUN 15 (1997)(G.R. Edizioni)(IT)[!][issue 1997-02][PLANET CD V].iso
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enigma
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earcd
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varie
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uae-0_64.lha
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uae-0.6.4
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src
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expansion.c
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C/C++ Source or Header
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1996-09-02
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14KB
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527 lines
/*
* UAE - The Un*x Amiga Emulator
*
* Expansion Slots
*
* (c) 1996 Stefan Reinauer
*/
#include "sysconfig.h"
#include "sysdeps.h"
#include "config.h"
#include "options.h"
#include "memory.h"
#include "custom.h"
#include "newcpu.h"
#include "autoconf.h"
#define MAX_EXPANSION_BOARDS 5
/* 00 / 02 */
#define MEM_8MB 0x00 /* Size of Memory Block */
#define MEM_4MB 0x07
#define MEM_2MB 0x06
#define MEM_1MB 0x05
#define MEM_512KB 0x04
#define MEM_256KB 0x03
#define MEM_128KB 0x02
#define MEM_64KB 0x01
#define same_slot 0x08 /* Next card is in the same Slot */
#define rom_card 0x10 /* Card has valid ROM */
#define add_memory 0x20 /* Add Memory to List of Free Ram */
#define generic 0xc0 /* Type of Expansion Card */
#define future1 0x00
#define future2 0x40
#define future3 0x80
/* ********************************************************** */
/* Card Data - Where can I get a complete List of these ???? */
/* 04 - 06 & 10-16 */
#define commodore_g 513 /* Commodore Braunschweig (Germany) */
#define commodore 514 /* Commodore West Chester */
#define gvp 2017 /* GVP */
#define hackers_id 2011
#define commodore_a2091 3 /* A2091 / A590 Card from C= */
#define commodore_a2091_ram 10 /* A2091 / A590 Ram on HD-Card */
#define commodore_a2232 70 /* A2232 Multiport Expansion */
#define gvp_series_2_scsi 11
#define gvp_iv_24_gfx 32
/* ********************************************************** */
/* 08-0A */
#define no_shutup 64 /* Card cannot receive Shut_up_forever */
#define care_addr 128 /* Adress HAS to be $200000-$9fffff */
/* ********************************************************** */
/* 40-42 */
#define enable_irq 1 /* enable Interrupt */
#define reset_card 4 /* Reset of Expansion Card */
#define card_int2 16 /* READ ONLY: IRQ 2 occured */
#define card_irq6 32 /* READ ONLY: IRQ 6 occured */
#define card_irq7 64 /* READ ONLY: IRQ 7 occured */
#define does_irq 128 /* READ ONLY: Karte loest ger. IRQ aus*/
/* ********************************************************** */
/* ROM defines */
#define rom_4bit (0x00<<14) /* ROM width */
#define rom_8bit (0x01<<14)
#define rom_16bit (0x02<<14)
#define rom_never (0x00<<12) /* Never run Boot Code */
#define rom_install (0x01<<12) /* run code at install time */
#define rom_binddrv (0x02<<12) /* run code with binddrivers */
CPTR ROM_filesys_resname = 0, ROM_filesys_resid = 0;
CPTR ROM_filesys_diagentry = 0;
CPTR ROM_hardfile_resname = 0, ROM_hardfile_resid = 0;
CPTR ROM_hardfile_init = 0;
/* ********************************************************** */
static void expamem_init_clear(void);
static void expamem_map_clear(void);
static void expamem_init_fastcard(void);
static void expamem_map_fastcard(void);
static void expamem_init_filesys(void);
static void expamem_map_filesys(void);
void (*card_init[MAX_EXPANSION_BOARDS])(void);
void (*card_map[MAX_EXPANSION_BOARDS])(void);
int ecard = 0;
/* **********************************************************
* Fast Memory
* ********************************************************** */
static ULONG fastmem_mask;
static ULONG fastmem_alget(CPTR) REGPARAM;
static UWORD fastmem_awget(CPTR) REGPARAM;
static ULONG fastmem_lget(CPTR) REGPARAM;
static UWORD fastmem_wget(CPTR) REGPARAM;
static UBYTE fastmem_bget(CPTR) REGPARAM;
static void fastmem_lput(CPTR, ULONG) REGPARAM;
static void fastmem_wput(CPTR, UWORD) REGPARAM;
static void fastmem_bput(CPTR, UBYTE) REGPARAM;
static int fastmem_check(CPTR addr, ULONG size) REGPARAM;
static UBYTE *fastmem_xlate(CPTR addr) REGPARAM;
static ULONG fastmem_start; /* Determined by the OS */
static UBYTE *fastmemory = NULL;
ULONG fastmem_alget(CPTR addr)
{
UBYTE *m;
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
m = fastmemory + addr;
return (((ULONG)m[0] << 24) + ((ULONG)m[1] << 16)
+ ((ULONG)m[2] << 8) + ((ULONG)m[3]));
}
UWORD fastmem_awget(CPTR addr)
{
UBYTE *m;
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
m = fastmemory + addr;
return ((UWORD)m[0] << 8) + m[1];
}
ULONG fastmem_lget(CPTR addr)
{
UBYTE *m;
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
m = fastmemory + addr;
return (((ULONG)m[0] << 24) + ((ULONG)m[1] << 16)
+ ((ULONG)m[2] << 8) + ((ULONG)m[3]));
}
UWORD fastmem_wget(CPTR addr)
{
UBYTE *m;
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
m = fastmemory + addr;
return ((UWORD)m[0] << 8) + m[1];
}
UBYTE fastmem_bget(CPTR addr)
{
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
return fastmemory[addr];
}
void fastmem_lput(CPTR addr, ULONG l)
{
UBYTE *m;
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
m = fastmemory + addr;
m[0] = l >> 24;
m[1] = l >> 16;
m[2] = l >> 8;
m[3] = l;
}
void fastmem_wput(CPTR addr, UWORD w)
{
UBYTE *m;
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
m = fastmemory + addr;
m[0] = w >> 8;
m[1] = w;
}
void fastmem_bput(CPTR addr, UBYTE b)
{
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
fastmemory[addr] = b;
}
static int fastmem_check(CPTR addr, ULONG size)
{
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
return (addr + size) < fastmem_size;
}
static UBYTE *fastmem_xlate(CPTR addr)
{
addr -= fastmem_start & fastmem_mask;
addr &= fastmem_mask;
return fastmemory + addr;
}
addrbank fastmem_bank = {
fastmem_alget, fastmem_awget,
fastmem_lget, fastmem_wget, fastmem_bget,
fastmem_lput, fastmem_wput, fastmem_bput,
fastmem_xlate, fastmem_check
};
/*
* Filesystem device ROM
* This is very simple, the Amiga shouldn't be doing things with it. No support
* for 68020 unaligned addressing etc.
*/
static ULONG filesys_lget(CPTR) REGPARAM;
static UWORD filesys_wget(CPTR) REGPARAM;
static UBYTE filesys_bget(CPTR) REGPARAM;
static void filesys_lput(CPTR, ULONG) REGPARAM;
static void filesys_wput(CPTR, UWORD) REGPARAM;
static void filesys_bput(CPTR, UBYTE) REGPARAM;
static ULONG filesys_start; /* Determined by the OS */
static UBYTE filesysory[65536];
ULONG filesys_lget(CPTR addr)
{
UBYTE *m;
addr -= filesys_start & 65535;
addr &= 65535;
m = filesysory + addr;
return (((ULONG)m[0] << 24) + ((ULONG)m[1] << 16)
+ ((ULONG)m[2] << 8) + ((ULONG)m[3]));
}
UWORD filesys_wget(CPTR addr)
{
UBYTE *m;
addr -= filesys_start & 65535;
addr &= 65535;
m = filesysory + addr;
return ((UWORD)m[0] << 8) + m[1];
}
UBYTE filesys_bget(CPTR addr)
{
addr -= filesys_start & 65535;
addr &= 65535;
return filesysory[addr];
}
static void filesys_lput(CPTR addr, ULONG l)
{
fprintf(stderr, "filesys_lput called\n");
}
static void filesys_wput(CPTR addr, UWORD w)
{
fprintf(stderr, "filesys_wput called\n");
}
static void filesys_bput(CPTR addr, UBYTE b)
{
fprintf(stderr, "filesys_bput called\n");
}
addrbank filesys_bank = {
default_alget, default_awget,
filesys_lget, filesys_wget, filesys_bget,
filesys_lput, filesys_wput, filesys_bput,
default_xlate, default_check
};
/* ******************************************************* */
/* Autoconfig address space at 0xE80000 */
static UBYTE expamem[65536];
static UBYTE expamem_lo;
static UBYTE expamem_hi;
static ULONG expamem_lget(CPTR) REGPARAM;
static UWORD expamem_wget(CPTR) REGPARAM;
static UBYTE expamem_bget(CPTR) REGPARAM;
static void expamem_lput(CPTR, ULONG) REGPARAM;
static void expamem_wput(CPTR, UWORD) REGPARAM;
static void expamem_bput(CPTR, UBYTE) REGPARAM;
addrbank expamem_bank = {
expamem_lget, expamem_wget,
expamem_lget, expamem_wget, expamem_bget,
expamem_lput, expamem_wput, expamem_bput,
default_xlate, default_check
};
static ULONG expamem_lget(CPTR addr)
{
fprintf(stderr,"warning: READ.L from address $%lx \n",addr);
return 0xffffffff;
}
static UWORD expamem_wget(CPTR addr)
{
fprintf(stderr,"warning: READ.W from address $%lx \n",addr);
return 0xffff;
}
static UBYTE expamem_bget(CPTR addr)
{
UBYTE value;
addr &= 0xFFFF;
return expamem[addr];
}
static void expamem_write(CPTR addr, UBYTE value)
{
addr &= 0xffff;
if (addr==00 || addr==02 || addr==0x40 || addr==0x42) {
expamem[addr] = (value & 0xf0);
expamem[addr+2] = (value & 0x0f) << 4;
} else {
expamem[addr] = ~(value & 0xf0);
expamem[addr+2] = ~((value & 0x0f) << 4);
}
}
static void expamem_lput(CPTR addr, ULONG value)
{
fprintf(stderr,"warning: WRITE.L to address $%lx : value $%lx\n",addr,value);
}
static void expamem_wput(CPTR addr, UWORD value)
{
fprintf(stderr,"warning: WRITE.W to address $%lx : value $%x\n",addr,value);
}
static void expamem_bput(CPTR addr, UBYTE value)
{
switch (addr&0xff) {
case 0x30:
case 0x32:
expamem_hi = 0;
expamem_lo = 0;
expamem_write (0x48, 0x00);
break;
case 0x48:
expamem_hi = value;
(*card_map[ecard])();
fprintf (stderr," Card %d done.\n",ecard+1);
++ecard;
if (ecard <= MAX_EXPANSION_BOARDS)
(*card_init[ecard])();
else
expamem_init_clear();
break;
case 0x4a:
expamem_lo = value;
break;
case 0x4c:
fprintf (stderr," Card %d had no success.\n",ecard+1);
++ecard;
if (ecard <= MAX_EXPANSION_BOARDS)
(*card_init[ecard])();
else
expamem_init_clear();
break;
}
}
void expamem_reset()
{
int cardno = 0;
ecard = 0;
if (fastmemory != NULL) {
card_init[cardno] = expamem_init_fastcard;
card_map[cardno++] = expamem_map_fastcard;
}
if (automount_uaedev && !ersatzkickfile) {
card_init[cardno] = expamem_init_filesys;
card_map[cardno++] = expamem_map_filesys;
}
while (cardno < MAX_EXPANSION_BOARDS) {
card_init[cardno] = expamem_init_clear;
card_map[cardno++] = expamem_map_clear;
}
(*card_init[0])();
}
void expansion_init(void)
{
if (fastmem_size > 0) {
fastmem_mask = fastmem_size - 1;
fastmemory = (UBYTE *)calloc(fastmem_size,1);
if (fastmemory == NULL) {
fprintf (stderr,"Out of memory for fastmem card.\n");
}
}
}
/* ***************************************************************
* Expansion Card (ZORRO II) for 1/2/4/8 MB of Fast Memory
* *************************************************************** */
void expamem_map_fastcard()
{
fastmem_start = ((expamem_hi|(expamem_lo>>4)) << 16);
map_banks (&fastmem_bank, fastmem_start >> 16, fastmem_size >> 16);
fprintf (stderr,"Fastcard: mapped @$%lx: %dMB fast memory\n",fastmem_start, fastmem_size >>20);
}
void expamem_init_fastcard()
{
expamem_init_clear();
if (fastmem_size==0x100000)
expamem_write (0x00, MEM_1MB+add_memory+generic);
else if (fastmem_size==0x200000)
expamem_write (0x00, MEM_2MB+add_memory+generic);
else if (fastmem_size==0x400000)
expamem_write (0x00, MEM_4MB+add_memory+generic);
else if (fastmem_size==0x800000)
expamem_write (0x00, MEM_8MB+add_memory+generic);
expamem_write (0x08, care_addr);
expamem_write (0x04, 1);
expamem_write (0x10, hackers_id >> 8);
expamem_write (0x14, hackers_id & 0x0f);
expamem_write (0x18, 0x00); /* ser.no. Byte 0 */
expamem_write (0x1c, 0x00); /* ser.no. Byte 1 */
expamem_write (0x20, 0x00); /* ser.no. Byte 2 */
expamem_write (0x24, 0x01); /* ser.no. Byte 3 */
expamem_write (0x28, 0x00); /* Rom-Offset hi */
expamem_write (0x2c, 0x00); /* ROM-Offset lo */
expamem_write (0x40, 0x00); /* Ctrl/Statusreg.*/
}
/*
* Filesystem device
*/
void expamem_map_filesys()
{
filesys_start=((expamem_hi | (expamem_lo >> 4)) << 16);
map_banks(&filesys_bank, filesys_start >> 16, 1);
}
void expamem_init_filesys()
{
UBYTE diagarea[] = { 0x90, 0x00, 0x01, 0x0C, 0x01, 0x00, 0x01, 0x06 };
expamem_init_clear();
expamem_write (0x00, MEM_64KB | rom_card | generic);
expamem_write (0x08, care_addr | no_shutup);
expamem_write (0x04, 2);
expamem_write (0x10, hackers_id >> 8);
expamem_write (0x14, hackers_id & 0x0f);
expamem_write (0x18, 0x00); /* ser.no. Byte 0 */
expamem_write (0x1c, 0x00); /* ser.no. Byte 1 */
expamem_write (0x20, 0x00); /* ser.no. Byte 2 */
expamem_write (0x24, 0x01); /* ser.no. Byte 3 */
expamem_write (0x28, 0x10); /* Rom-Offset hi */
expamem_write (0x2c, 0x00); /* ROM-Offset lo */
expamem_write (0x40, 0x00); /* Ctrl/Statusreg.*/
/* Build a DiagArea */
memcpy(expamem + 0x1000, diagarea, sizeof diagarea);
/* Call DiagEntry */
expamem[0x1100] = 0x4E;
expamem[0x1101] = 0xF9; /* JMP */
expamem[0x1102] = ROM_filesys_diagentry>>24;
expamem[0x1103] = ROM_filesys_diagentry>>16;
expamem[0x1104] = ROM_filesys_diagentry>>8;
expamem[0x1105] = ROM_filesys_diagentry;
/* What comes next is a plain bootblock */
expamem[0x1106] = 0x4E;
expamem[0x1107] = 0xF9; /* JMP */
expamem[0x1108] = EXPANSION_bootcode>>24;
expamem[0x1109] = EXPANSION_bootcode>>16;
expamem[0x110A] = EXPANSION_bootcode>>8;
expamem[0x110B] = EXPANSION_bootcode;
memcpy(filesysory, expamem, 0x2000);
}
/* *********************************************************
* Dummy Entries to show that there's no card in a slot
* ********************************************************* */
void expamem_map_clear()
{
fprintf(stderr, "expamem_map_clear() got called. Shouldn't happen.\n");
}
void expamem_init_clear()
{
memset (expamem,0xff,sizeof expamem);
}