+- DC-SWAT Forum (http://www.dc-swat.ru/forum)
+-- Форум: Sega Dreamcast (/forum-2.html)
+--- Форум: English section (/forum-29.html)
+--- Тема: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast (/thread-3790.html)
FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - aldair - 12.11.2020 21:52
RE: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - SWAT - 13.11.2020 06:45
You can get more speed if try adapters on chip cp2102.
Some adapters can works up to 500000 baudrate with DC. It's ~10x faster than 57600. But not all adapters can do it, for me works only on red PCB.
RE: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - aldair - 13.11.2020 21:35
(13.11.2020 06:45)SWAT писал(а): You can get more speed if try adapters on chip cp2102.
Some adapters can works up to 500000 baudrate with DC. It's ~10x faster than 57600. But not all adapters can do it, for me works only on red PCB.
Where can I find the cp2102 chip?
Do you use BBA to test Dreamshell games using dcload?
This is it?:
![[Изображение: 6838587a8b.jpg]](https://cdn.awsli.com.br/600x450/980/980586/produto/36185110/6838587a8b.jpg)
RE: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - megavolt85 - 13.11.2020 23:38
(13.11.2020 06:45)SWAT писал(а): You can get more speed if try adapters on chip cp2102.
FTDI намного лучше cp2102, они без проблем работают на скорости до двух мегабит
RE: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - SWAT - 14.11.2020 12:55
(13.11.2020 23:38)megavolt85 писал(а):(13.11.2020 06:45)SWAT писал(а): You can get more speed if try adapters on chip cp2102.
FTDI намного лучше cp2102, они без проблем работают на скорости до двух мегабит
У меня он почему-то вообще только на 57600 работает...
(13.11.2020 21:35)aldair писал(а): Where can I find the cp2102 chip?
Do you use BBA to test Dreamshell games using dcload?
ISO Loader supports dcload (serial and ip) as device. But I haven't tested for a long time.
Unfortunately BBA is much slower than IDE. And there is little point in running games over the network.
RE: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - aldair - 14.11.2020 15:32
(13.11.2020 21:35)aldair писал(а): Where can I find the cp2102 chip?
Do you use BBA to test Dreamshell games using dcload?
In Dreamshell you only have dcload_ip. Where is this dcload-serial?
ISO Loader supports dcload (serial and ip) as device. But I haven't tested for a long time.
Unfortunately BBA is much slower than IDE. And there is little point in running games over the network.
[/quote]
In Dreamshell you only have dcload_ip. Where is this dcload-serial?
RE: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - MilkeyWilkey - 14.11.2020 16:12
(14.11.2020 12:55)SWAT писал(а): Unfortunately BBA is much slower than IDE. And there is little point in running games over the network.
why is that? HIT-400 supports 100 Mbit/s, more then enough to play any game and even HIT-300 supports 10 Mbit/s that is equal to x16 DVD-ROM speed. I play ps2 via smb all the time
isn't IDE transfer speed is somewhere around 100 Mbit/s as well? or the problem in the speed of BBA bus?
RE: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - SWAT - 15.11.2020 09:16
(14.11.2020 15:32)aldair писал(а): In Dreamshell you only have dcload_ip. Where is this dcload-serial?
Boot DS core from your dcload and share directory with games:
Код:
dc-tool-ser -c ./games -t /dev/ttyUSB0 -b 57600 -x DEBUG_DS_CORE.BIN(14.11.2020 16:12)MilkeyWilkey писал(а):(14.11.2020 12:55)SWAT писал(а): Unfortunately BBA is much slower than IDE. And there is little point in running games over the network.
why is that? HIT-400 supports 100 Mbit/s, more then enough to play any game and even HIT-300 supports 10 Mbit/s that is equal to x16 DVD-ROM speed. I play ps2 via smb all the time
isn't IDE transfer speed is somewhere around 100 Mbit/s as well? or the problem in the speed of BBA bus?
I did not say that this speed is not enough for games, because many work fine with SD
In fact, BBA in dcload give me ~20-30 Mbit/s and IDE works on 80+ Mbit/s.
Also for games need rewrite BBA driver in dcload, need make it async, use DMA and etc. It maybe speedup, but... It takes a lot of time for this to work properly, but what's the point if very few people have BBA.
BTW.
Marcus Comstedt (very famous on dc scene), tried to make his own loader with BBA.
But judging by the code, it will hardly work faster, and the compatibility with games will be DS RC1 level.
https://github.com/zeldin/dc-virtcd
RE: FTDI 232R Chip + AES4ALL= prefetch_Dreamcast - aldair - 16.11.2020 03:07
(15.11.2020 09:16)SWAT писал(а):How to partition the sd card? I made the partition show as sd1 but it doesn't open in dreamshell.(14.11.2020 15:32)aldair писал(а): In Dreamshell you only have dcload_ip. Where is this dcload-serial?
Boot DS core from your dcload and share directory with games:
Go to ISO Loader, browse directory /pc for games and try launch.Код:
dc-tool-ser -c ./games -t /dev/ttyUSB0 -b 57600 -x DEBUG_DS_CORE.BIN
(14.11.2020 16:12)MilkeyWilkey писал(а):(14.11.2020 12:55)SWAT писал(а): Unfortunately BBA is much slower than IDE. And there is little point in running games over the network.
why is that? HIT-400 supports 100 Mbit/s, more then enough to play any game and even HIT-300 supports 10 Mbit/s that is equal to x16 DVD-ROM speed. I play ps2 via smb all the time
isn't IDE transfer speed is somewhere around 100 Mbit/s as well? or the problem in the speed of BBA bus?
I did not say that this speed is not enough for games, because many work fine with SD
In fact, BBA in dcload give me ~20-30 Mbit/s and IDE works on 80+ Mbit/s.
Also for games need rewrite BBA driver in dcload, need make it async, use DMA and etc. It maybe speedup, but... It takes a lot of time for this to work properly, but what's the point if very few people have BBA.
BTW.
Marcus Comstedt (very famous on dc scene), tried to make his own loader with BBA.
But judging by the code, it will hardly work faster, and the compatibility with games will be DS RC1 level.
https://github.com/zeldin/dc-virtcd