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Re: CPC text mode

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In message <98b46670-36cd-4ae0-bcf2-c2f030295391@googlegroups.com>
 on 11 Jan 2017 CP/M User wrote:

> On Saturday, 2 July 2016 04:09:47 UTC+10, Matthew Phillips  wrote:
> > In message on 1 Jul 2016 B. P. TBC wrote:
> > 
> > > Has the Amstrad CPC 464 a real text mode, like the C64? Or the CPC has 
> > > only graphics mode?
> > 
> > The CPC 464 only has three graphics modes.  All modes are 200 pixels high
> > (25 text lines of 8 pixels).  MODE 0 is 160 pixels wide, MODE 1 is 320
> > pixels wide and MODE 2 is 640 pixels, with 4, 2 and 1 bits per pixel
> > respectively, so all 16K.
> 
> The Amstrad has an 4 Graphics Mode if you include the more obscure 4
> coloured Mode 0, it works differently from MODE 0 in that a hidden screen
> can be drawn and displayed based on the INKs. From what I can tell it has't
> been widely used and as MODE 0 offers up to 16 colours, it's more effective
> to use that MODE when writing games.

It's not known to the MODE command, is it?  Nor is it mentioned in the
documentation of SCR SET MODE.

It's possible to do various tricks with the Amstrad hardware, like split mode
screens, and extra tall screens, but careful use of interrupts and switching
the screen memory location, so it may well be possible to produce a 160 pixel
wide screen with only four colours.  But I've never seen anything written
about it in any of the Amstrad computer magazines in my collection.

-- 
Matthew Phillips
Durham

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Thread

CPC text mode "B. P. TBC" <tbc_z87@mailbox.hu> - 2016-07-01 15:04 +0200
  Re: CPC text mode Matthew Phillips <spam2011m@yahoo.co.uk> - 2016-07-01 19:09 +0100
    Re: CPC text mode "CP/M User" <cpm22_user@yahoo.com> - 2017-01-10 22:30 -0800
      Re: CPC text mode Matthew Phillips <spam2011m@yahoo.co.uk> - 2017-01-11 08:00 +0000
        Re: CPC text mode "CP/M User" <cpm22_user@yahoo.com> - 2017-01-13 13:48 -0800
          Re: CPC text mode Matthew Phillips <spam2011m@yahoo.co.uk> - 2017-01-14 16:10 +0000
            Re: CPC text mode "CP/M User" <cpm22_user@yahoo.com> - 2017-01-14 18:01 -0800

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