X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/4bc81323e51ac138e733c14eeb6f283ae706e904..3b841cea9979b3df9d9292ce37aad9ea4b9ae268:/avr/z180-serv.c diff --git a/avr/z180-serv.c b/avr/z180-serv.c index 193b23f..9cf59f8 100644 --- a/avr/z180-serv.c +++ b/avr/z180-serv.c @@ -1,167 +1,622 @@ /* + * (C) Copyright 2014-2016 Leo C. + * + * SPDX-License-Identifier: GPL-2.0 */ +#include "z180-serv.h" #include "common.h" -//#include -//#include -//#include -//#include -//#include - - -#include "debug.h" +#include +#include +#include +#include + +#include "config.h" +#include "background.h" +#include "env.h" +#include "ff.h" #include "serial.h" #include "z80-if.h" +#include "debug.h" +#include "print-utils.h" +#include "timer.h" +#include "time.h" +#include "bcd.h" +#include "rtc.h" +#define DEBUG_CPM_SDIO 0 /* set to 1 to debug */ + +#define debug_cpmsd(fmt, args...) \ + debug_cond(DEBUG_CPM_SDIO, fmt, ##args) /*--------------------------------------------------------------------------*/ -uint32_t z80_sram_cmp(uint32_t addr, uint32_t length, uint8_t wval, int inc) +struct msg_item { + uint8_t fct; + uint8_t sub_min, sub_max; + void (*func)(uint8_t, int, uint8_t *); +}; + +uint32_t msg_to_addr(uint8_t *msg) { - uint8_t rval; - int_fast8_t errors = 0; - - DBG_P(1, "SRAM: Check 0x%.5lx byte... ", length); - while (length--) { - if ((rval = z80_read(addr)) != wval) { - if (errors == 0) { - DBG_P(1, "\nSRAM: Address W R\n" \ - " ------------------\n"); - } - errors++; - if (errors > 20) { - DBG_P(1, " ...\n"); - break; - } - DBG_P(1, " 0x%.5lx 0x%.2x 0x%.2x\n", addr, wval, rval); - } - addr++; - wval += inc; + union { + uint32_t as32; + uint8_t as8[4]; + } addr; + + addr.as8[0] = msg[0]; + addr.as8[1] = msg[1]; + addr.as8[2] = msg[2]; + addr.as8[3] = 0; + + return addr.as32; +} + + +static int msg_xmit_header(uint8_t func, uint8_t subf, int len) +{ + z80_memfifo_putc(fifo_msgout, 0xAE); + z80_memfifo_putc(fifo_msgout, len+2); + z80_memfifo_putc(fifo_msgout, func); + z80_memfifo_putc(fifo_msgout, subf); + + return 0; +} + +int msg_xmit(uint8_t func, uint8_t subf, int len, uint8_t *msg) +{ + msg_xmit_header(func, subf, len); + while (len--) + z80_memfifo_putc(fifo_msgout, *msg++); + + return 0; +} + +void do_msg_ini_memfifo(uint8_t subf, int len, uint8_t * msg) +{ + (void)len; + + z80_memfifo_init(subf, msg_to_addr(msg)); +} + + +void do_msg_char_out(uint8_t subf, int len, uint8_t * msg) +{ + (void)subf; + + while (len--) + putchar(*msg++); +} + +/* echo message */ +void do_msg_echo(uint8_t subf, int len, uint8_t * msg) +{ + (void)subf; + + /* send re-echo */ + msg_xmit(1, 3, len, msg); +} + +/* get timer */ +void do_msg_get_timer(uint8_t subf, int len, uint8_t * msg) +{ + uint32_t time_ms = (len >= 4) ? *(uint32_t *) msg : 0; + + time_ms = get_timer(time_ms); + msg_xmit(3, subf, sizeof(time_ms), (uint8_t *) &time_ms); +} + +/* ---------------------------------------------------------------------------*/ + +#define CPM_DAY_OFFSET ((1978-1900) * 365 + 19) /* 19 leap years */ + +/* + * Convert CP/M time stamp to a broken-down time structure + * + */ +int mk_date_time (int len, uint8_t *msg, struct tm *tmp) +{ + time_t stamp; + + if (len != 5) + return -1; + + /* days since 2000-01-01 */ + long days = msg[3] + (msg[4] << 8) - 8036; + + if (days < 0) + return -1; + + stamp = days * ONE_DAY; + stamp += bcd2bin(msg[0]); + stamp += bcd2bin(msg[1]) * 60 ; + stamp += bcd2bin(msg[2]) * 3600L; + gmtime_r(&stamp, tmp); + return 0; +} + +void mk_cpm_time(struct tm *tmp, uint8_t cpm_time[5]) +{ + uint16_t days = 1; + uint_fast8_t leap=2; + + for (int year=78; year < tmp->tm_year; year++) { + days = days + 365 + (leap == 0); + leap = (leap+1)%4; } - DBG_P(1, "Done.\n"); + days += tmp->tm_yday; - return addr; + cpm_time[0] = bin2bcd(tmp->tm_sec); + cpm_time[1] = bin2bcd(tmp->tm_min); + cpm_time[2] = bin2bcd(tmp->tm_hour); + cpm_time[3] = days; + cpm_time[4] = days >> 8; } -void z80_sram_fill(uint32_t addr, uint32_t length, uint8_t startval, int inc) +/* get/set cp/m time */ +void do_msg_get_set_time(uint8_t subf, int len, uint8_t * msg) { - printf("SRAM: Write 0x%.5lx byte... ", length); - while (length--) { - z80_write(addr, startval); - ++addr; - startval += inc; + struct tm t; + uint8_t cpm_time[5]; + int rc; + + memset(cpm_time, 0, ARRAY_SIZE(cpm_time)); + + switch (subf) { + case 3: /* set date & time */ + /* initialize t with current time */ + rc = rtc_get (&t); + + if (rc >= 0) { + /* insert new date & time */ + if (mk_date_time (len, msg, &t) != 0) { + my_puts_P(PSTR("## set_time: Bad date format\n")); + break; + } + + time_t time; + time = mk_gmtime(&t); + gmtime_r(&time, &t); + + /* and write to RTC */ + rc = rtc_set (&t); + if(rc) + my_puts_P(PSTR("## set_time: Set date failed\n")); + } else { + my_puts_P(PSTR("## set_time: Get date failed\n")); + } + /* FALL TROUGH */ + case 2: /* get date & time */ + rc = rtc_get (&t); + if (rc >= 0) { + time_t time; + time = mk_gmtime(&t); + //mktime(&t); + gmtime_r(&time, &t); + + mk_cpm_time(&t, cpm_time); + } else { + my_puts_P(PSTR("## get_time: Get date failed\n")); + } + break; } - printf("Done.\n"); + + msg_xmit(3, subf, sizeof(cpm_time), cpm_time); } +/* ---------------------------------------------------------------------------*/ -#if 0 -void z80_sram_fill_string(uint32_t addr, int length, const char *text) +static uint8_t drv; +static uint8_t disk_buffer[CONFIG_CPM_BLOCK_SIZE]; +static struct cpm_drive_s drv_table[CONFIG_CPM_MAX_DRIVE]; +static int handle_cpm_drv_to; + +typedef enum {SINGLE, START, MIDDLE, END} dbgmsg_t; + +void drv_debug(dbgmsg_t phase, const FLASH char *const fmt, ...) \ { - char c; - const char *p = text; + struct cpm_drive_s *dp = &drv_table[drv]; + + if (dp->opt & DRV_OPT_DEBUG) { + + va_list ap; + va_start (ap, fmt); - while (length--) { - z80_write(addr++, c = *p++); - if (c == 0) - p = text; + if (phase == SINGLE || phase == START) + printf_P(PSTR("# %7lu dsk%d: "), get_timer(0), drv); + + vfprintf_P (stdout, fmt, ap); + + if (phase == SINGLE || phase == END) + putc('\n', stdout); + + va_end (ap); } } +int drv_list(void) +{ + for (uint8_t i = 0; i < CONFIG_CPM_MAX_DRIVE; i++) { + struct cpm_drive_s * p = &drv_table[i]; + if (p->img_name) { + printf_P(PSTR(" dsk%d: %2s %3s attached to %s\n"), i, + p->opt&DRV_OPT_RO ? "RO":"RW", p->opt&DRV_OPT_DEBUG ? "DBG":"", + p->img_name); + } + } + return 0; +} -uint32_t z80_sram_cmp_string(uint32_t addr, int length, const char *text) +int drv_detach(uint8_t unit) { - char c; - const char *p = text; + drv = unit; + if (drv < CONFIG_CPM_MAX_DRIVE) { + struct cpm_drive_s *p = &drv_table[drv]; + + drv_debug(SINGLE, PSTR("detach from '%s'"), p->img_name ? p->img_name : "-"); + + if (p->img_name) { + f_close(&p->fd); + free(p->img_name); + p->opt = 0; + p->flags &= ~DRV_FLG_DIRTY; + p->img_name = NULL; + + uint32_t scb = getenv_ulong(PSTR(ENV_CPM3_SCB), 16, 0); + if (scb && (z80_bus_cmd(Request) & ZST_ACQUIRED)) { + z80_write(scb + 0xf0, 0xff); + z80_write(p->dph + 11, 0xff); + z80_bus_cmd(Release); + } + } + } + return 0; +} - while (length--) { - c = *p++; - if (z80_read(addr) != c) - break; - ++addr; - if (c == 0) - p = text; +static int drv_find_file_attached(const char *fn) +{ + for (uint8_t i = 0; i < CONFIG_CPM_MAX_DRIVE; i++) { + struct cpm_drive_s *p = &drv_table[i]; + if (p->img_name && !strcmp(fn, p->img_name)) { + return i; + } } - return addr; + return -1; } -const char * const qbfox = "Zhe quick brown fox jumps over the lazy dog!"; -const char * const qbcat = "Zhe quick brown fox jumps over the lazy cat!"; +int drv_attach(uint8_t unit, const char *filename, drv_opt_t options) +{ + int res; + + drv = unit; + if (drv >= CONFIG_CPM_MAX_DRIVE) + return AT_RANGE; + + struct cpm_drive_s *p = &drv_table[drv]; + + if (options & DRV_OPT_REATTATCH) { + if (filename) { + return AT_ERROR; + } + + if (!p->img_name) { + return AT_NOT; + } + + /* change options */ + if ((p->opt ^ options) & DRV_OPT_RO) { + f_close(&p->fd); + res = f_open(&p->fd, p->img_name, + FA_READ | (options&DRV_OPT_RO ? 0 : FA_WRITE)); + } + + p->opt = options & ~DRV_OPT_REATTATCH; + + } else { + + if (p->img_name) + return AT_ALREADY; + if (drv_find_file_attached(filename) >= 0) + return AT_OTHER; + + p->opt = options; + + /* new attachment */ + + if ((p->img_name = strdup(filename)) == NULL) + return AT_NOMEM; + res = f_open(&p->fd, p->img_name, + FA_READ | (options&DRV_OPT_RO ? 0 : FA_WRITE)); + + if (!res && f_size(&p->fd) < CONFIG_CPM_DISKSIZE) { +#if 0 + unsigned int bw; + debug_cpmsd(" expanding image file from %ld to %ld\n", + f_size(&p->fd), CONFIG_CPM_DISKSIZE); + + res = f_lseek(&p->fd, CONFIG_CPM_DISKSIZE-CONFIG_CPM_BLOCK_SIZE); + if (!res) { + memset(disk_buffer, 0xe5, CONFIG_CPM_BLOCK_SIZE); + res = f_write(&p->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &bw); + if (res || bw < CONFIG_CPM_BLOCK_SIZE) { + debug_cpmsd(" failed! res: %d, bytes written: %u\n", res, bw); + } + p->flags |= DRV_FLG_DIRTY; + bg_setstat(handle_cpm_drv_to, 1); + } +#else + drv_debug(SINGLE, PSTR("wrong image file size: %ld, should be %ld"), + f_size(&p->fd), CONFIG_CPM_DISKSIZE); + res = 64; #endif + } + if (res) { + drv_detach(drv); + return AT_OPEN; + } + } + + return AT_OK; +} -uint8_t z80_get_byte(uint32_t adr) + +int cpm_drv_to(int state) { - uint8_t data; - - z80_bus_cmd(Request); - data = z80_read(adr), - z80_bus_cmd(Release); - - return data; + static uint32_t ts; + + switch(state) { + case 0: + break; + + case 1: + ts = get_timer(0); + state = 2; + break; + + case 2: + if (get_timer(ts) > 1000) { + for (uint_fast8_t i=0; i < CONFIG_CPM_MAX_DRIVE; i++) { + if (drv_table[i].flags & DRV_FLG_DIRTY) { + drv_table[i].flags &= ~DRV_FLG_DIRTY; + f_sync(&drv_table[i].fd); + drv = i; + drv_debug(SINGLE, PSTR("f_sync")); + } + } + state = 0; + } + } + return state; } +static const FLASH char * const FLASH rc_messages[] = { + FSTR("OK"), + FSTR("Internal error: wrong message len"), /* 01 */ + FSTR("Invalid relative drive #"), /* 02 */ + FSTR("Bus timeout"), /* 03 */ + FSTR("Access byond disk size"), /* 04 */ + FSTR("Write protect"), /* 05 */ + FSTR("No media"), /* 06 */ + FSTR("R/W address == 0 !!!!"), /* 07 */ + }; + +void msg_cpm_result(uint8_t subf, uint8_t rc, int res) +{ + uint8_t result_msg[3]; -/*--------------------------------------------------------------------------*/ + if (res) + rc |= 0x80; -struct msg_item { - uint8_t fct; - uint8_t sub_min, sub_max; - void (*func)(uint8_t, int, uint8_t *); -}; + result_msg[0] = rc; + result_msg[1] = res; + result_msg[2] = res >> 8; -uint32_t msg_to_addr(uint8_t *msg) -{ - union { - uint32_t as32; - uint8_t as8[4]; - } addr; + msg_xmit(2, subf, sizeof(result_msg), result_msg); - addr.as8[0] = msg[0]; - addr.as8[1] = msg[1]; - addr.as8[2] = msg[2]; - addr.as8[3] = 0; + if (rc) + drv_debug(END, PSTR(" rc: %.02x/%d, '%S'"), + rc, res, rc_messages[rc & 0x7f]); + else + drv_debug(END, PSTR("")); - return addr.as32; } -void do_msg_ini_msgfifo(uint8_t subf, int len, uint8_t * msg) +/* + db 2 ; disk command + ds 1 ; subcommand (login/read/write) + ds 1 ; @adrv (8 bits) +0 + ds 1 ; @rdrv (8 bits) +1 + ds 3 ; @xdph (24 bits) +2 +*/ + +void do_msg_cpm_login(uint8_t subf, int len, uint8_t * msg) { - (void)subf; (void)len; + struct cpm_drive_s *dp; + FRESULT res = 0; - z80_init_msg_fifo(msg_to_addr(msg)); -} + (void)subf; + /* Get relative drive number */ + drv = msg[1]; + drv_debug(START, PSTR("login")); -void do_msg_ini_memfifo(uint8_t subf, int len, uint8_t * msg) -{ - (void)len; + if (len != 5) { + return msg_cpm_result(subf, 0x01, res); + } + + if ( drv >= CONFIG_CPM_MAX_DRIVE) { + /* invalid relative drive number */ + return msg_cpm_result(subf, 0x02, res); + } + + dp = &drv_table[drv]; + dp->flags &= ~DRV_FLG_OPEN; + dp->dph = ((uint32_t)msg[4] << 16) + ((uint16_t)msg[3] << 8) + msg[2]; + + if (dp->img_name == NULL) { + /* no file attached */ + return msg_cpm_result(subf, 0x06, res); + } + + f_close(&dp->fd); + res = f_open(&dp->fd, dp->img_name, + FA_READ | (dp->opt&DRV_OPT_RO ? 0 : FA_WRITE)); - z80_memfifo_init(subf - 1, msg_to_addr(msg)); + dp->flags |= DRV_FLG_OPEN; + + /* send result*/ + msg_cpm_result(subf, 0x00, res); } -void do_msg_char_out(uint8_t subf, int len, uint8_t * msg) +/* + db 2 ; disk command + ds 1 ; subcommand (login/read/write) + ds 1 ; @adrv (8 bits) +0 + ds 1 ; @rdrv (8 bits) +1 + ds 2 ; @trk (16 bits) +2 + ds 2 ; @sect(16 bits) +4 + ds 1 ; @cnt (8 bits) +6 + ds 3 ; phys. transfer addr +7 +*/ + +#define ADRV 0 +#define RDRV 1 +#define TRK 2 +#define SEC 4 +#define CNT 6 +#define ADDR 7 + +void do_msg_cpm_rw(uint8_t subf, int len, uint8_t * msg) { - (void)subf; + struct cpm_drive_s *dp; + uint32_t addr; + uint32_t pos; + uint16_t track; + uint16_t sec; + uint8_t secs; + bool dowrite; + FRESULT res = 0; + uint8_t rc = 0; + bool buserr = 0; + + drv = msg[RDRV]; + dowrite = (subf == 2); + + drv_debug(START, PSTR("%2S"), dowrite ? PSTR("W ") : PSTR(" R")); + + if (len != 10) { + return msg_cpm_result(subf, 0x01, res); + } + if ( drv>= CONFIG_CPM_MAX_DRIVE) { + return msg_cpm_result(subf, 0x02, res); + } - while (len--) - putchar(*msg++); + dp = &drv_table[drv]; + track = (uint16_t)(msg[TRK+1] << 8) + msg[TRK]; + sec = (uint16_t)(msg[SEC+1] << 8) + msg[SEC]; + secs = msg[CNT]; + addr = ((uint32_t)msg[ADDR+2] << 16) + ((uint16_t)msg[ADDR+1] << 8) + msg[ADDR]; + + if (dp->img_name == NULL) { + /* no media */ + return msg_cpm_result(subf, 0x06, res); + } + + /* TODO: tracks per sector from dpb */ + pos = (track * 8UL + sec) * CONFIG_CPM_BLOCK_SIZE; + + drv_debug(MIDDLE, PSTR(" T:%4d, S:%2d, cnt:%2d, lba: %.8lx, addr: %.5lx"), + track, sec, secs, pos, addr); + + if (addr == 0) { + return msg_cpm_result(subf, 0x07, res); + } + + if (dowrite && dp->opt & DRV_OPT_RO) { + return msg_cpm_result(subf, 0x05, res); + } + + + if (pos + secs * CONFIG_CPM_BLOCK_SIZE > CONFIG_CPM_DISKSIZE) { + drv_debug(MIDDLE, PSTR(" access > DISKSIZE:%.8lx!"), + CONFIG_CPM_DISKSIZE); + return msg_cpm_result(subf, 0x04, res); + } + + res = f_lseek(&dp->fd, pos); + + while (!res && secs--) { + unsigned int brw; + if (dowrite) { + if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { + buserr = 1; + break; + } else { + z80_read_block(disk_buffer, addr, CONFIG_CPM_BLOCK_SIZE); + z80_bus_cmd(Release); + } + res = f_write(&dp->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &brw); + } else { + res = f_read(&dp->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &brw); + if (res == FR_OK) { + if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { + buserr = 1; + break; + } else { + z80_write_block(disk_buffer, addr, CONFIG_CPM_BLOCK_SIZE); + z80_bus_cmd(Release); + } + } + } + if (brw != CONFIG_CPM_BLOCK_SIZE) { + drv_debug(MIDDLE, PSTR(" short rd/wr: res: %d, brw: %u"), + res, brw); + res = 64; + } + addr += CONFIG_CPM_BLOCK_SIZE; + } + + if (dowrite && !res) { + dp->flags |= DRV_FLG_DIRTY; + bg_setstat(handle_cpm_drv_to, 1); + } + + if (buserr) { + /* Bus timeout. how can this happen? */ + rc = 0x03; + } + + /* send result*/ + msg_cpm_result(subf, rc, res); } const FLASH struct msg_item z80_messages[] = { { 0, /* fct nr. */ - 0, 0, /* sub fct nr. from, to */ - do_msg_ini_msgfifo}, - { 0, - 1, 2, + 1, 3, /* sub fct nr. from, to */ do_msg_ini_memfifo}, { 1, 1, 1, do_msg_char_out}, + { 1, + 2, 2, + do_msg_echo}, + { 2, + 0, 0, + do_msg_cpm_login}, + { 2, + 1, 2, + do_msg_cpm_rw}, + { 3, + 1, 1, + do_msg_get_timer}, + { 3, + 2, 3, /* 2: get, 3: set time and date */ + do_msg_get_set_time}, { 0xff, /* end mark */ 0, 0, 0}, @@ -181,17 +636,19 @@ void do_message(int len, uint8_t *msg) sub_fct = *msg++; len -= 2; - while (fct != z80_messages[i].fct) - ++i; + while (fct != z80_messages[i].fct) { + if (z80_messages[i].fct == 0xff) { + DBG_P(1, "do_message: Unknown function: %i, %i\n", + fct, sub_fct); + return; /* TODO: unknown message # */ + } - if (z80_messages[i].fct == 0xff) { - DBG_P(1, "do_message: Unknown function: %i, %i\n", - fct, sub_fct); - return; /* TODO: unknown message # */ + ++i; } while (fct == z80_messages[i].fct) { - if (sub_fct >= z80_messages[i].sub_min && sub_fct <= z80_messages[i].sub_max ) + if (sub_fct >= z80_messages[i].sub_min && + sub_fct <= z80_messages[i].sub_max ) break; ++i; } @@ -222,10 +679,10 @@ void check_msg_fifo(void) static int msglen,idx; static uint8_t buffer[CTRBUF_LEN]; - while (state != 3 && (ch = z80_msg_fifo_getc()) >= 0) { + while ((ch = z80_memfifo_getc(fifo_msgin)) >= 0) { switch (state) { case 0: /* wait for start of message */ - if (ch == 0x81) { + if (ch == 0xAE) { /* TODO: magic number */ msglen = 0; idx = 0; state = 1; @@ -240,36 +697,77 @@ void check_msg_fifo(void) break; case 2: /* get message */ buffer[idx++] = ch; - if (idx == msglen) - state = 3; + if (idx == msglen) { + do_message(msglen, buffer); + state = 0; + } break; } } +} + + +int msg_handling(int state) +{ + bool pending; + + ATOMIC_BLOCK(ATOMIC_FORCEON) { + pending = (Stat & S_MSG_PENDING) != 0; + Stat &= ~S_MSG_PENDING; + } + + if (pending) { + uint8_t init_request; + z80_bus_cmd(Request); + init_request = z80_read(0x43); + z80_bus_cmd(Release); + if ( init_request != 0) { + /* Get address of fifo 0 */ + z80_bus_cmd(Request); + uint32_t fifo_addr = z80_read(0x40) + + ((uint16_t) z80_read(0x40+1) << 8) + + ((uint32_t) z80_read(0x40+2) << 16); + z80_write(0x43, 0); + z80_bus_cmd(Release); + + if (fifo_addr != 0) { + z80_memfifo_init(fifo_msgin, fifo_addr); + state = 1; + } else + state = 0; - if (state == 3) { - do_message(msglen, buffer); - state = 0; + } else { + check_msg_fifo(); + } } + + return state; } -/*--------------------------------------------------------------------------*/ +static int handle_msg_handling; -#if 0 -void dump_mem(const FLASH uint8_t *addr, uint32_t len) +void setup_z180_serv(void) { - DBG_P(1, "hdrom dump:"); - while (len) { - DBG_P(1, "\n %.5x:", addr); - for (unsigned i = 0; i<16; i++) - DBG_P(1, " %.2x", *addr++); - len -= len > 16 ? 16 : len; - } - DBG_P(1, "\n"); + + handle_msg_handling = bg_register(msg_handling, 0); + handle_cpm_drv_to = bg_register(cpm_drv_to, 0); } -#endif -/*--------------------------------------------------------------------------*/ +void restart_z180_serv(void) +{ + z80_bus_cmd(Request); + z80_memset(0x40, 0, 4); + z80_bus_cmd(Release); + + for (int i = 0; i < NUM_FIFOS; i++) + z80_memfifo_init(i, 0); + bg_setstat(handle_msg_handling, 0); + +} + +#if 0 +/*--------------------------------------------------------------------------*/ const FLASH uint8_t iniprog[] = { 0xAF, // xor a @@ -308,20 +806,16 @@ const FLASH uint8_t test1[] = { 0x21, 0x1E, 0x00, // ld hl,dmclrt ;load DMA registers 0x06, 0x08, // ld b,dmct_e-dmclrt 0x0E, 0x20, // ld c,sar0l - 0xED, 0x93, // otimr + 0xED, 0x93, // otimr 0x3E, 0xC3, // ld a,0c3h ;dst +1, src +1, burst 0xED, 0x39, 0x31, // out0 (dmode),a ; - 0x3E, 0x62, // ld a,062h ;enable dma0, + 0x3E, 0x62, // ld a,062h ;enable dma0, 0xED, 0x39, 0x30, //cl_1: out0 (dstat),a ;copy 64k 0x18, 0xFB, // jr cl_1 ; - 0x00, 0x00, //dmclrt: dw 0 ;src (inc) + 0x00, 0x00, //dmclrt: dw 0 ;src (inc) 0x00, // db 0 ;src 0x00, 0x00, // dw 0 ;dst (inc), 0x00, // db 0 ;dst 0x00, 0x00, // dw 0 ;count (64k) }; - - - -// check_msg_fifo(); - +#endif