It belatedly occurs to me that inverted TTL serial probably looks just like non-inverted TTL serial except the data will be garbled. So most likely you have it hooked up to the right pins but you somehow need to invert the signal.

I found an article, which shows almost exactly the same result that you have:Β https://www.sparkfun.com/news/2461



On Fri, 5 Apr 2019 at 20:05, Nick Griffin <span1922@live.com> wrote:
Its still getting garbled text with CP 2102. 15200 was a typo on here.. 😊 in Putty its 115200.
I thought I tryΒ my FTDI 232,its text is garbled too… it does it on both of them.??
I am connecting it to pc then to FTDI232 or CP 2102Β they connect toΒ E3 then running Putty on PC and unplugging the E3 to restart it and garbled textΒ on Putty. I can’t see the bootΒ log text is unreadable…?

I have only one more thing I can try, I have a USB to RS232 Cable that's Prolific USB to Serial and see if that works.

Spanner..

From:Β David Given
Sent:Β β€ŽThursdayβ€Ž, β€Ž4β€Ž β€ŽAprilβ€Ž β€Ž2019 β€Ž17β€Ž:β€Ž57
To:Β Discussion of the Amstrad E3 emailer hardware/software

It's probably a typo, but just to check: you said 15200, but it should be 115200?

On Thu, 4 Apr 2019, 18:52 Nick Griffin, <span1922@live.com> wrote:
Could it be that I might have the RX and TX round there wrong way..? red is TX (Ring) so it connected to TX pin on CP 2102,White is RX (Tip)Β so it connected to RX pin on CP 2102,black isΒ GroundΒ (Sleeve) connected to GND pin on CP 2102..??

Spanner..

From:Β Nick Griffin
Sent:Β β€ŽThursdayβ€Ž, β€Ž4β€Ž β€ŽAprilβ€Ž β€Ž2019 β€Ž17β€Ž:β€Ž38
To:Β Discussion of the Amstrad E3 emailer hardware/software

This is my settings in putty, 15200, 8 bits, no parity and 1 stop bit. And no flow control.
from https://wiki.earth.li/E3_Getting_Started website.

Spanner..

From:Β Antony Stone
Sent:Β β€ŽThursdayβ€Ž, β€Ž4β€Ž β€ŽAprilβ€Ž β€Ž2019 β€Ž16β€Ž:β€Ž51
To:Β Discussion of the Amstrad E3 emailer hardware/software

On Thursday 04 April 2019 at 17:47:21, Antony Stone wrote:

> On Thursday 04 April 2019 at 17:44:13, Nick Griffin wrote:
> > I have connected the CP2102 and I am getting garbage text in Putty..
>
> That suggests the wrong baud rate to me.

https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.cambridgewargames.org.uk%2Fmembers%2Fandy%2Femailer%2F&amp;data=02%7C01%7C%7C1582cfe263ef4d5cdbde08d6b915666b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636899898889909349&amp;sdata=zjSspT0Ft5FobfMYnBdrxtc6MvEywB4MRky%2B6hHxkaY%3D&amp;reserved=0 and
https://eur01.safelinks.protection.outlook.com/?url=http:%2F%2Fwww.earth.li%2F~noodles%2Fhardware-e3.html&amp;data=02%7C01%7C%7C1582cfe263ef4d5cdbde08d6b915666b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636899898889919354&amp;sdata=rOH%2Fb0v1uOAfmesV3LLdYH3lctIkFptlTV4wZlWHIWU%3D&amp;reserved=0 say 115,200 8n1 no handshake.


Antony.

> >Β  β–’β–’β–’β–’β–’yβ–’β–’7β–’w5'=β–’β–’β–’_{gβ–’Sβ–’β–’β–’β–’{-'7β–’β–’β–’β–’β–’β–’}5w5;1β–’myuβ–’β–’β–’β–’β–’β–’β–’e{β–’c}cwβ–’β–’β–’β–’Vβ–’β–’β–’β–’β–’ii
> >Β  β–’V
> >
> > Wβ–’β–’β–’6β–’g-%β–’β–’β–’β–’β–’β–’β–’β–’β–’/β–’y!75u#7β–’β–’β–’β–’β–’β–’β–’β–’β–’/β–’β–’β–’β–’β–’_{gβ–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’gYβ–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’
> > β–’β–’
> > β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’yβ–’β–’/β–’5%β–’%!7'5β–’'!=75β–’β–’gw[β–’Sβ–’β–’β–’β–’{-'7β–’β–’β–’β–’β–’β–’}5β–’e!7β–’9=#β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’!β–’
> > β–’β–’β–’
> > β–’β–’β–’β–’β–’β–’β–’eueβ–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’3'=/β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’_}[eYβ–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’3'=/β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’
> > β–’gw [β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’3'=/β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’gmcUOβ–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’3'=/β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’Qβ–’+
> > β–’β–’'5β–’β–’β–’β–’β–’9/59)-#1β–’gw[β–’Sβ–’β–’=β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’='-5β–’β–’β–’β–’'!=7β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’9/59)-#1β–’gmc
> > UO
> > β–’Sβ–’β–’=β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’='-5β–’β–’β–’β–’'!=7β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’9/59)-#1β–’eueβ–’Sβ–’β–’=β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’='-5β–’
> > β–’β–’β–’
> > '!=7β–’β–’β–’sβ–’β–’β–’β–’β–’β–’β–’9/59)-#1β–’_}[eYβ–’Sβ–’β–’=β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’='-5β–’β–’β–’β–’'!=7β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’λ—Ώe!7'
> > 5β–’5
> > 57β–’β–’β–’β–’=β–’='-7β–’β–’β–’gw[β–’/-#)β–’1'!;='β–’#%;53!/5%β–’-β–’β–’β–’β–’β–’s!#7β–’%!7β–’β–’gmcUOβ–’β–’Sβ–’β–’β–’=β–’β–’β–’
> > β–’β–’β–’
> > β–’β–’β–’β–’β–’s!#7β–’%!7β–’β–’_}[eYβ–’β–’Sβ–’β–’β–’=β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’g-#β–’9!%%=#7β–’'-#β–’!β–’57-β–’β–’β–’β–’s!#7β–’%!7β–’
> > β–’gm cUOβ–’β–’Sβ–’β–’β–’=β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’Uβ–’!#7β–’β–’β–’g-#β–’=β–’=%β–’β–’}# *β–’-#1β–’g-#β–’β–’β–’β–’β–’
> >
> >Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β  β–’:β–’β–’
> >
> > β–’-#1β–’/5β–’)5'β–’β–’β–’Viβ–’β–’5β–’β–’β–’β–’β–’β–’A%'β–’β–’β–’=%β–’75'=β–’β–’75β–’β–’'-#β–’β–’β–’β–’W-7β–’;β–’β–’--!#β–’β–’β–’β–’β–’=9/-#5
> > β–’
> > β–’}eYβ–’wugW}β–’ae}_β–’β–’β–’β–’β–’β–’J!75%β–’5#=;'5β–’β–’β–’β–’β–’a#β–’#!75β–’β–’β–’!='=15β–’β–’β–’β–’β–’β–’β–’β–’!#5β–’β–’β–’β–’β–’β–’β–’
> > β–’β–’β–’ =15β–’β–’β–’!#5β–’β–’β–’β–’β–’β–’β–’=15β–’β–’β–’!#5β–’β–’β–’5β–’9%3β–’β–’β–’β–’#β–’β–’-#-β–’β–’=9%3β–’-#5β–’β–’9!#!'5β–’
> > β–’75β–’737;β–’β–’=%A%%!7A;=5β–’β–’β–’β–’sssβ–’β–’β–’β–’=%A%%!7A-
> >
> >Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β  5β–’β–’sssβ–’%5%β–’β–’β–’eβ–’=%A%!7A5
> >
> > β–’'!!β–’β–’β–’β–’dΩ‹β–’β–’{!1!em_Yβ–’β–’YMIHβ–’hβ–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’!#!'5β–’β–’9!'!7%%
> > β–’9!#3-17β–’β–’V]β–’β–’β–’β–’β–’[S[β–’β–’VMβ–’β–’:β–’β–’-55β–’β–’β–’β–’9β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’β–’-/β–’#!β–’5'β–’!-!#β–’5#=;'57β–’
> > β–’β–’
> > Q(β–’β–’β–’λΊΏβ–’333;β–’β–’β–’β–’β–’β–’-β–’β–’β–’β–’β–’β–’-β–’=β–’ae}_β–’U}[Wβ–’β–’β–’Q(β–’β–’β–’λΊΏβ–’5;β–’β–’β–’β–’β–’β–’β–’β–’-β–’β–’β–’β–’β–’β–’-β–’=~Y%=Y
> > eyβ–’
> > β–’HIOTβ–’9β–’β–’[Wyβ–’!5β–’5β–’755957β–’β–’β–’*β–’β–’β–’β–’u#=;'-#1β–’[Wyβ–’β–’β–’β–’S:β–’%5β–’y'!9)β–’wβ–’β–’β–’β–’β–’β–’Rβ–’JZβ–’
> > β–’β–’β–’ '!β–’555β–’β–’;=9/β–’β–’β–’β–’β–’β–’β–’έ΅eβ–’β–’7-#--='- 57β–’β–’β–’β–’β–’[}eβ–’7-)β–’!3β–’β–’β–’β–’β–’iβ–’-
> >
> >Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β  5β–’β–’β–’β–’β–’β–’;'!9)-
> >
> > 5β–’β–’Wβ–’uβ–’#β–’s{β–’β–’9β–’β–’β–’β–’β–’β–’β–’[-715[#β–’β–’m#9β–’β–’β–’V Jjβ–’β–’

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