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Groups > comp.sys.amstrad.8bit > #245
| From | Rayner <usenet@magic-cookie.deletethis.co.uk.invalid> |
|---|---|
| Newsgroups | comp.sys.amstrad.8bit |
| Subject | Re: Full Memory Map of Amstrad CPC 464/6128 |
| Date | 2015-07-19 20:32 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <moh1ho$mme$1@dont-email.me> (permalink) |
| References | <80dd9ab9-c2f7-4230-93b6-585966554cb3@googlegroups.com> |
In article <80dd9ab9-c2f7-4230-93b6-585966554cb3@googlegroups.com>, <firatsalgur@gmail.com> wrote: >Hello, > >Where can I find a complete listing of CPC 6128 memory map? The ones I >come across on the web do not include, say, the screen character buffer >for text mode -- where the visible text on the screen is held before >being rasterized. The most comprehensive memory map I'm aware of is in "The Amstrad CPC Firmware Guide", which is available online here: http://ep.homeserver.hu/PDF/firmware.pdf. Have you already found that one? The official firmware guide from Amstrad (SOFT 968) may also have some useful information. There's an OCRed copy on CPCWiki, but unfortunately it's missing some of the most useful sections (such as the memory map and the description of the main firmware jumpblock): http://www.cpcwiki.eu/index.php/Soft968:_CPC_464/664/6128_Firmware I've forgotten most of what I knew about CPC system internals, but I'm not sure there *was* a screen text buffer, just routines for printing characters directly to screen memory (and reading them back again by comparing bit patterns to character matrices). There was a text *input* buffer: &AC8A on the 6128, according to the above links. I'm sure someone will correct me in the entirely likely event that I'm wrong. R
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Full Memory Map of Amstrad CPC 464/6128 firatsalgur@gmail.com - 2015-07-17 12:00 -0700 Re: Full Memory Map of Amstrad CPC 464/6128 Rayner <usenet@magic-cookie.deletethis.co.uk.invalid> - 2015-07-19 20:32 +0000 Re: Full Memory Map of Amstrad CPC 464/6128 David Cantrell <david@cantrell.org.uk> - 2015-07-20 12:53 +0100 Re: Full Memory Map of Amstrad CPC 464/6128 Karl-Stephan Werkmeister <kastwerk@web.de> - 2015-09-03 14:01 +0200
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