Mirage Imager - Revision history

Phi2x: /* Weblinks */

2025-04-10T01:03:51Z

Weblinks

← Older revision		Revision as of 01:03, 10 April 2025
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	== Weblinks ==		== Weblinks ==

			* [https://framagit.org/offset/mirage-imager-acepansion Mirage Imager ACEpansion] on Framagit
	* [http://www.cpc-power.com/index.php?page=detail&num=5317 ''Mirage Imager'' from CPC-Power]		* [http://www.cpc-power.com/index.php?page=detail&num=5317 ''Mirage Imager'' from CPC-Power]
	* [https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm ''Mirage Imager'' from CPCrulez]		* [https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm ''Mirage Imager'' from CPCrulez]

Phi2x: /* Technical */

2025-02-23T21:48:50Z

Technical

← Older revision		Revision as of 21:48, 23 February 2025
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	NOTE: It seems the RAM can only be accessed after the red button has been pressed.		NOTE: It seems the RAM can only be accessed after the red button has been pressed.

	The ROM is made visible by pressing the red button which causes an NMI and execution starts at 0066. The ROM is visible at 0000-1fff with a mirror at 2000-ffff. The ROM overrides the internal CPC OS ROM and also disables the RAM where it is mapped (i.e. RAM in the range 0000-3fff is disabled). Therefore writing to RAM under the ROM is not possible.		The ROM is made visible by pressing the red button which causes an [[NMI]] and execution starts at 0066. The ROM is visible at 0000-1fff with a mirror at 2000-ffff. The ROM overrides the internal CPC OS ROM and also disables the RAM where it is mapped (i.e. RAM in the range 0000-3fff is disabled). Therefore writing to RAM under the ROM is not possible.

	The ROM state is also toggled by reading an opcode from an address >0x03000 and less than <0x03fff. The ROM itself uses 3FFB which contains a RET		The ROM state is also toggled by reading an opcode from an address >0x03000 and less than <0x03fff. The ROM itself uses 3FFB which contains a RET

Cpcmaniaco: /* Weblinks */

2020-09-17T11:35:40Z

Weblinks

← Older revision		Revision as of 11:35, 17 September 2020
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	* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986		* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986
	* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986		* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986
			* [http://hardware.speccy.org/temp/Amstrad-Mirage.html ''Mirage Imager'' from hardware.speccy.org]

	== References ==		== References ==

Cpcmaniaco: /* Weblinks */

2020-09-17T10:35:46Z

Weblinks

← Older revision		Revision as of 10:35, 17 September 2020
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	== Weblinks ==		== Weblinks ==

			* [http://www.cpc-power.com/index.php?page=detail&num=5317 ''Mirage Imager'' from CPC-Power]
	* [https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm ''Mirage Imager'' from CPCrulez]		* [https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm ''Mirage Imager'' from CPCrulez]
			* [https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm CPCrulez review (french)] - Microstrad 8/Oct/1986
	* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986		* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986
	* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986		* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986
	* [https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm CPCrulez review (french)] - Microstrad 8/Oct/1986

	== References ==		== References ==

Cpcmaniaco: /* Weblinks */

2020-09-17T10:30:18Z

Weblinks

← Older revision		Revision as of 10:30, 17 September 2020
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	== Weblinks ==		== Weblinks ==

	* [~~http://~~https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm ''Mirage Imager'' from CPCrulez]		* [https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm ''Mirage Imager'' from CPCrulez]
	* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986		* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986
	* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986		* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986

Cpcmaniaco: /* Weblinks */

2020-09-17T10:26:08Z

Weblinks

← Older revision		Revision as of 10:26, 17 September 2020
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	== Weblinks ==		== Weblinks ==

	* [http://https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm~~?t=Vg==~~ ''Mirage Imager'' from CPCrulez]		* [http://https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm ''Mirage Imager'' from CPCrulez]
	* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986		* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986
	* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986		* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986

Cpcmaniaco: /* Weblinks */

2020-09-17T10:24:43Z

Weblinks

← Older revision		Revision as of 10:24, 17 September 2020
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	== Weblinks ==		== Weblinks ==

			* [http://https://cpcrulez.fr/hardware-interface_debug-mirage_imager.htm?t=Vg== ''Mirage Imager'' from CPCrulez]
	* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986		* [http://www.worldofspectrum.org/showmag.cgi?mag=YourComputer/Issue8609/Pages/YourComputer860900015.jpg Review (english)] - Your Computer, 09/1986
	* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986		* [http://www.stcarchiv.de/hc1986/11_mirageimager.php Review (german)] - Happy Computer, 11/1986

Cpcmaniaco: /* Manual */

2020-09-17T10:20:34Z

Manual

← Older revision		Revision as of 10:20, 17 September 2020
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	== Manual ==		== Manual ==

	* [[Media:Mirage Imager Manual.pdf\|Mirage Imager Manual]] ~~(pdf)~~ (v2, from 26 July 1986)		* [[Media:Mirage Imager Manual.pdf\|Mirage Imager Manual]] {{EN}} {{PDF}} (v2, from 26 July 1986)

	== Downloads ==		== Downloads ==

Arnoldemu: /* Technical */

2018-09-15T17:04:24Z

Technical

← Older revision		Revision as of 17:04, 15 September 2018
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	NOTE: The addresses to the RAM are also scrambled/remapped. See the schematic.		NOTE: The addresses to the RAM are also scrambled/remapped. See the schematic.
			NOTE: It seems the RAM can only be accessed after the red button has been pressed.

	The ROM is made visible by pressing the red button which causes an NMI and execution starts at 0066. The ROM is visible at 0000-1fff with a mirror at 2000-ffff. The ROM overrides the internal CPC OS ROM and also disables the RAM where it is mapped (i.e. RAM in the range 0000-3fff is disabled). Therefore writing to RAM under the ROM is not possible.		The ROM is made visible by pressing the red button which causes an NMI and execution starts at 0066. The ROM is visible at 0000-1fff with a mirror at 2000-ffff. The ROM overrides the internal CPC OS ROM and also disables the RAM where it is mapped (i.e. RAM in the range 0000-3fff is disabled). Therefore writing to RAM under the ROM is not possible.
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	instruction. It uses this to transition in and out of the ROM to read the font from the BASIC ROM.		instruction. It uses this to transition in and out of the ROM to read the font from the BASIC ROM.

	The device ~~seems to listen~~ to writes to GA's rom/ram paging I/O port. It looks for the address with:		The device listens to writes to GA's rom/ram paging I/O port when it's not enabled (i.e. when the ROM has not been paged in). It looks for the address with:

	0xxxxxxxxxxxxxxxxx with bit 7 and 6 of the data as 10xxxxxx.		0xxxxxxxxxxxxxxxxx with bit 7 and 6 of the data as 10xxxxxx.

	The reason needs to be confirmed - but it seems to be similar to port FExx operation, perhaps it indirectly detects the ROM state in this way.		The reason needs to be confirmed - but it seems to be similar to port FExx operation, perhaps it indirectly detects the ROM state in this way by pre-configuring the address.

	The device calls 2016 to return back to the running program. This is a RET in the rom ~~repeat~~.		The device calls 2016 to return back to the running program. This is a RET in the rom mirror.

	== Manual ==		== Manual ==

Arnoldemu: /* Technical */

2018-09-15T16:54:37Z

Technical

← Older revision		Revision as of 16:54, 15 September 2018
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	The reason needs to be confirmed - but it seems to be similar to port FExx operation, perhaps it indirectly detects the ROM state in this way.		The reason needs to be confirmed - but it seems to be similar to port FExx operation, perhaps it indirectly detects the ROM state in this way.

			The device calls 2016 to return back to the running program. This is a RET in the rom repeat.

	== Manual ==		== Manual ==