X-Authentication-Warning: delorie.com: mailnull set sender to djgpp-bounces using -f Message-ID: <3C66FEB7.396324D0@anywhere.com> From: noLCDpanels X-Mailer: Mozilla 4.78 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: comp.os.msdos.djgpp Subject: Re: TSR to run 60Hz CGA at 50Hz References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 12 NNTP-Posting-Host: 67.112.56.56 X-Complaints-To: abuse AT prodigy DOT net X-Trace: newssvr14.news.prodigy.com 1013382808 ST000 67.112.56.56 (Sun, 10 Feb 2002 18:13:28 EST) NNTP-Posting-Date: Sun, 10 Feb 2002 18:13:28 EST Organization: Prodigy Internet http://www.prodigy.com X-UserInfo1: Q[R_PJSCTS AT _RPYXGJKZOFTBTR\B AT GXLN@GZ_GYO^JWTEPIB_NVUAH_[BL[\IRKIANGGJBFNJF_DOLSCENSY^U AT FRFUEXR@KFXYDBPWBCDQJA AT X_DCBHXR[C@\EOKCJLED_SZ AT RMWYXYWE_P@\\GOIW^@SYFFSWHFIXMADO@^[ADPRPETLBJ]RDGENSKQQZN Date: Sun, 10 Feb 2002 23:13:28 GMT To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com > No this post hasn't been lost for 10 years. I have an 8-bit CGA with > composite out that I wish to use for debugging with RHIDE/DJGPP. I > have fitted a b/w modulator to the card but the signal is 60Hz and my > UK TV can't handle this. Does anyone have a TSR or something which > will set the output to 50Hz and keep it there ? Is that a *real* CGA display adapter? If so, you might be out of luck. The display-adapters of this era (early 1980s) had a fixed set of clock circuits, to produce all dot clocks. If the card happens to support a 50Hz scanrate, you might be able to set it through the CGA BIOS. If not, you'd probably have to desolder one of the CGA board's clock generators, and replace it with a different value (X * 5/6)