Re: [Ql-Users] Q68 Baud
My experience is that internal SER cards for PC tend to work reliably at up to 230 kBaud without handshake, while most USB-SER coverters don't. Usually you notice it only during long file transfers. Am 21.01.2018 um 00:11 schrieb Dave Park via Ql-Users: > Once you're up into 230k territory, the quality of the cable starts making > an extraordinary difference, even if there is UART support for that speed. > > On Sat, Jan 20, 2018 at 3:25 PM, Peter Graf via Ql-Users < > ql-users@lists.q-v-d.com> wrote: > >> Hi Fabrizio, >> >>> configuring the driver in Win10 there are available different predefined >>> speeds, including 460800, so I assume it should work at least from PC >> side. >> >> I know, but that tells nothing about what the adaptor can physically >> hanlde. I have a lot of experience with that, unfortunately. Nine out of >> ten adaptors which allow to select such high speeds, can't even handle >> 230 kBaud PC to PC reliably. >> >> Peter >> ___ >> QL-Users Mailing List ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
Once you're up into 230k territory, the quality of the cable starts making an extraordinary difference, even if there is UART support for that speed. On Sat, Jan 20, 2018 at 3:25 PM, Peter Graf via Ql-Users < ql-users@lists.q-v-d.com> wrote: > Hi Fabrizio, > > > configuring the driver in Win10 there are available different predefined > > speeds, including 460800, so I assume it should work at least from PC > side. > > I know, but that tells nothing about what the adaptor can physically > hanlde. I have a lot of experience with that, unfortunately. Nine out of > ten adaptors which allow to select such high speeds, can't even handle > 230 kBaud PC to PC reliably. > > Peter > ___ > QL-Users Mailing List > -- Dave Park d...@sinclairql.com ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
Hi Fabrizio, > configuring the driver in Win10 there are available different predefined > speeds, including 460800, so I assume it should work at least from PC side. I know, but that tells nothing about what the adaptor can physically hanlde. I have a lot of experience with that, unfortunately. Nine out of ten adaptors which allow to select such high speeds, can't even handle 230 kBaud PC to PC reliably. Peter ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
Peter, configuring the driver in Win10 there are available different predefined speeds, including 460800, so I assume it should work at least from PC side. Ciao On 20/01/2018 18:00, Peter Graf wrote: Hi Fabrizio, Now playing with SMSQ/E sources, according Wolfgang suggestion (Thanks) How do you come to the idea your SER-USB adaptor supports 460 kBaud, even PC to PC? The required RS-232 line drivers are very seldom! Peter ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
I'm just happy that 230k has been shown to be physically possible on the Q68 hardware. When mine comes, I'll test it with my Q68 wifi/bluetooth dongle. If it works, I might make that the default configuration. I mean, it is literally 2x as fast. My serial wifi dongle and GPIO card (details on the QL Forum) will be available February 14th and cost £39. For those who don't follow the QL Forum, I am releasing a significant new item of hardware every week or two. So far, a buck regulator for £7, Minerva ROMs on carrier boards for £5, the last of the first batch of miniplanes (now sold out), a Q68 wifi, bluetooth and GPIO dongle with encryption engine, which can access secure sites, do DNS resolution, and is working internet on your Q68, Q40 or Q60. A QL version will be available in probably 2-3 months once more testing is done (but the 9600baud effective useful limit makes it a bit unpleasant for anything but moving small amounts of data). I have two *HUGE* new items coming up in the next few weeks :D All items go on sale February 14th, and will only be sold if in stock, ready to ship. Flat rate shipping from the US is £10, so this lets people order multiple items for a single shipping cost. All mail send by tracked express mail. On Sat, Jan 20, 2018 at 11:00 AM, Peter Graf via Ql-Users < ql-users@lists.q-v-d.com> wrote: > Hi Fabrizio, > > > Now playing with SMSQ/E sources, according Wolfgang suggestion > (Thanks) > > How do you come to the idea your SER-USB adaptor supports 460 kBaud, > even PC to PC? > > The required RS-232 line drivers are very seldom! > Peter > > ___ > QL-Users Mailing List > -- Dave Park d...@sinclairql.com ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
Hi Fabrizio, > Now playing with SMSQ/E sources, according Wolfgang suggestion (Thanks) How do you come to the idea your SER-USB adaptor supports 460 kBaud, even PC to PC? The required RS-232 line drivers are very seldom! Peter ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
So far, I used 230400 in a reliable way (not extensively tested...), i did not notice anything wrong, moreover this speed (230400) it is a reasonable compromise vs response time expected, 115200 is a bit slow for my taste. The setting I used on PC side was 8bit data and no flow control. Sernet I use is version 2.25, btw is a newer version somewhere available? Now playing with SMSQ/E sources, according Wolfgang suggestion (Thanks) Fabrizio On 20/01/2018 13:04, Derek via Ql-Users wrote: Hi, When using Q68 to QPC2 on a PC using Sernet, I have found it is the PC serial port that limits the serial port speed to 115200 Baud. But Q68 to Q68 can achieve higher serial speeds. Sernet requires RTS/CTS for flow control, which on the Q68 is pulled high and not available. Pity the Sernet source code was not available so a software flow control could used like XON/XOFF. But on saying all that Sernet does work on Q68 to QPC2, QXL. Not tried Atari ST QL emulator yet. RegardsDerek Original message From: Peter Graf via Ql-Users Date: 20/01/2018 11:19 (GMT+00:00) To: ql-us...@q-v-d.com Cc: Peter Graf Subject: Re: [Ql-Users] Q68 Baud Hi Fabrizio, Finally what is the theoretically max ser speed of the Q68 is? 460 kBaud for the hardware itself (UART and RS-232 driver). But for the overall system, max. 115 kBaud is specified in the Manual. Beyond that it has not been sufficiently tested. Please note that many USB-SER converters for PC start getting unreliable at 230 kBaud already. Peter ___ QL-Users Mailing List ___ QL-Users Mailing List ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
NB : you would also have to add a new prescale value at label prescale ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
Hi Fabrizio, you can find that in smsq_q68_spp_ser_asm. There , if you want, you can extend the little table at label "bauds" beyond 230400. Also change the value of "moveq #8,d3" just above the label bd_lp, probably to 9 if you only add one more value. HTH Wolfgang. Hi all, I have (finally) found some time to check Sernet connection between my Q68 and QPC under Win10 (Mac Book using Parallel). To get COM1 I use a USB-> RS232 converter As expected Sernet works perfectly until 230400 Baud (19200*12), to get more speed I tried 460800 (19200*24) but I got a "not implemented error". All speed more than 230400 get a not implementation error in any SMSQ/E system (QPC /Q68/Q60). I think that SMSQmulator don't have SER driver. I had a look at the SMSQE 3.32 sources and there are 2 "baud.asm" in smsq/spp and sbext/ext but i cannot find where the speed check is. Finally what is the theoretically max ser speed of the Q68 is? and where the SMSQ/e check this ? Many thanks to any of the Guru that would like to answer:-):-) Regards Fabrizio ___ QL-Users Mailing List ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
On 20/01/2018 13:04, Derek via Ql-Users wrote: <> Not tried Atari ST QL emulator yet. The QVME graphics card used with the ST has a fast serial port. I got the best speeds with that. 230k, I believe, between my Mega ST + QVME and a PC (in the days when PCs had real serial ports). Per <> ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
Hi, When using Q68 to QPC2 on a PC using Sernet, I have found it is the PC serial port that limits the serial port speed to 115200 Baud. But Q68 to Q68 can achieve higher serial speeds. Sernet requires RTS/CTS for flow control, which on the Q68 is pulled high and not available. Pity the Sernet source code was not available so a software flow control could used like XON/XOFF. But on saying all that Sernet does work on Q68 to QPC2, QXL. Not tried Atari ST QL emulator yet. RegardsDerek Original message From: Peter Graf via Ql-Users Date: 20/01/2018 11:19 (GMT+00:00) To: ql-us...@q-v-d.com Cc: Peter Graf Subject: Re: [Ql-Users] Q68 Baud Hi Fabrizio, > Finally what is the theoretically max ser speed of the Q68 is? 460 kBaud for the hardware itself (UART and RS-232 driver). But for the overall system, max. 115 kBaud is specified in the Manual. Beyond that it has not been sufficiently tested. Please note that many USB-SER converters for PC start getting unreliable at 230 kBaud already. Peter ___ QL-Users Mailing List ___ QL-Users Mailing List
Re: [Ql-Users] Q68 Baud
Hi Fabrizio, > Finally what is the theoretically max ser speed of the Q68 is? 460 kBaud for the hardware itself (UART and RS-232 driver). But for the overall system, max. 115 kBaud is specified in the Manual. Beyond that it has not been sufficiently tested. Please note that many USB-SER converters for PC start getting unreliable at 230 kBaud already. Peter ___ QL-Users Mailing List
[Ql-Users] Q68 Baud
Hi all, I have (finally) found some time to check Sernet connection between my Q68 and QPC under Win10 (Mac Book using Parallel). To get COM1 I use a USB-> RS232 converter As expected Sernet works perfectly until 230400 Baud (19200*12), to get more speed I tried 460800 (19200*24) but I got a "not implemented error". All speed more than 230400 get a not implementation error in any SMSQ/E system (QPC /Q68/Q60). I think that SMSQmulator don't have SER driver. I had a look at the SMSQE 3.32 sources and there are 2 "baud.asm" in smsq/spp and sbext/ext but i cannot find where the speed check is. Finally what is the theoretically max ser speed of the Q68 is? and where the SMSQ/e check this ? Many thanks to any of the Guru that would like to answer:-):-) Regards Fabrizio ___ QL-Users Mailing List