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bi2a: Clarify data field usage on init command

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The single byte is a specific parameter required to initialize
the IO correctly. Otherwise, it either will only work partially
or not worked at all. The full impact and meaning of that byte
is not entirely known, yet.
This commit is contained in:
icex2 2020-12-16 23:14:15 +01:00
parent 0c88518a1f
commit ef377f40d8
4 changed files with 9 additions and 4 deletions
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1
src/main/acio/acio.h
View File

@ -66,6 +66,7 @@ struct ac_io_message {
uint8_t raw[0xFF];
uint8_t count;
uint8_t status;
uint8_t param;
struct ac_io_version version;
struct ac_io_icca_misc icca_misc;

4
src/main/bio2drv/bi2a-iidx.c
View File

@ -9,6 +9,8 @@
#include "util/log.h"
static const uint8_t _BIO2DR_BI2A_IIDX_INIT_DATA = 0x3B;
static bool bio2drv_bi2a_iidx_init_io(uint8_t node_id)
{
struct ac_io_message msg;
@ -16,7 +18,7 @@ static bool bio2drv_bi2a_iidx_init_io(uint8_t node_id)
msg.addr = node_id + 1;
msg.cmd.code = ac_io_u16(BIO2_BI2A_CMD_INIT);
msg.cmd.nbytes = 1;
msg.cmd.count = 0x3B;
msg.cmd.param = _BIO2DR_BI2A_IIDX_INIT_DATA;
if (!aciodrv_send_and_recv(
&msg, offsetof(struct ac_io_message, cmd.raw) + 1)) {

4
src/main/bio2drv/bi2a-sdvx.c
View File

@ -9,6 +9,8 @@
#include "util/log.h"
static const uint8_t _BIO2DR_BI2A_SDVX_INIT_DATA = 0x3B;
// this is probably InitIO
static bool bio2drv_bi2a_sdvx_init_io(uint8_t node_id)
{
@ -17,7 +19,7 @@ static bool bio2drv_bi2a_sdvx_init_io(uint8_t node_id)
msg.addr = node_id + 1;
msg.cmd.code = ac_io_u16(BIO2_BI2A_CMD_INIT);
msg.cmd.nbytes = 1;
msg.cmd.count = 0x3B;
msg.cmd.param = _BIO2DR_BI2A_SDVX_INIT_DATA;
if (!aciodrv_send_and_recv(
&msg, offsetof(struct ac_io_message, cmd.raw) + 1)) {

4
src/main/bio2emu-iidx/bi2a.c
View File

@ -85,8 +85,8 @@ void bio2_emu_bi2a_dispatch_request(
cmd_code = ac_io_u16(req->cmd.code);
switch (cmd_code) {
case AC_IO_CMD_CLEAR:
log_misc("AC_IO_CMD_CLEAR(%d)", req->addr);
case BIO2_BI2A_CMD_INIT:
log_misc("BIO2_BI2A_CMD_INIT(%d)", req->addr);
bio2_emu_bi2a_send_status(&bio2port->acio, req, 0x00);
break;