This driver was found on Epson's Australia site www.epson.com.au/downloads.html#windows
It should work for both Epson EX-800 and Citizen Dot Matrix Model GSX-190.
Please note that I have not yet tested this driver.
However, it has been scanned with the most recent update of Norton AntiVirus and was virus-free.
The following files are found inside the driver download file.
|HPPCL5MS.DRV||346.3 KB||4 Jan 1995|
|DMCOLOR.DLL||18.5 KB||3 Apr 1992|
|EPESCP2.DRV||13.7 KB||27 Jan 1994|
|ESCP2E.DRV||50.4 KB||25 Jan 1994|
|EPSON24.DRV||22.1 KB||26 Jan 1994|
|FINSTALL.DLL||110.2 KB||18 Jun 1993|
|AUTOCAD/PLEPSAE.EXP||112.9 KB||8 Jan 1996|
|AUTOCAD/README.TXT||25.9 KB||30 Jan 1996|
|HPPCL.DRV||178.9 KB||22 Apr 1994|
|UNIDRV.DLL||78.0 KB||1 Nov 1993|
|ESCP2MS.DRV||9.3 KB||30 May 1994|
|ESCP2.DRV||13.7 KB||3 Jan 1994|
|ESCP2C.DRV||12.4 KB||6 Oct 1994|
|EPSON9.DRV||26.5 KB||20 Dec 1994|
|PRINTER.TXT||2.6 KB||23 Mar 1992|
|OEMSETUP.INF||6.3 KB||18 May 1995|
|UNIDRV.HLP||32.5 KB||1 Nov 1993|
|FINSTALL.HLP||16.6 KB||30 Apr 1993|
|LICENSE.TXT||3.8 KB||19 Oct 1992|