Geneve 9640 - Revision history

Mizapf: /* Technical details */

2021-01-27T11:06:22Z

Technical details

← Older revision		Revision as of 11:06, 27 January 2021
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	* [[Geneve logical memory map]]		* [[Geneve logical memory map]]
			* [[Geneve physical memory map]]
	* [[Geneve paged memory organization\|Paged memory organization]]		* [[Geneve paged memory organization\|Paged memory organization]]
	* [[Geneve CRU definitions\|CRU definitions]]		* [[Geneve CRU definitions\|CRU definitions]]

Mizapf: /* Features */

2021-01-26T20:59:14Z

Features

← Older revision		Revision as of 20:59, 26 January 2021
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	* 128 KiB Video RAM		* 128 KiB Video RAM
	* [[V9938 Video Data Processor \| Video Data Processor V9938]], backward compatible with the TMS9928/9 with many new features		* [[V9938 Video Data Processor \| Video Data Processor V9938]], backward compatible with the TMS9928/9 with many new features
	* Real-time clock		* [[Real-time clock]]
	* TMS 9995 processor on 12 MHz speed		* TMS 9995 processor on 12 MHz speed

Mizapf: /* Technical details */

2021-01-26T11:59:45Z

Technical details

← Older revision		Revision as of 11:59, 26 January 2021
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	== Technical details ==		== Technical details ==

			* [[Geneve logical memory map]]
	* [[Geneve paged memory organization\|Paged memory organization]]		* [[Geneve paged memory organization\|Paged memory organization]]
	* [[Geneve CRU definitions\|CRU definitions]]		* [[Geneve CRU definitions\|CRU definitions]]

Mizapf: Added a link to the Horizon setup

2020-11-18T00:22:06Z

Added a link to the Horizon setup

← Older revision		Revision as of 00:22, 18 November 2020
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	MDOS is currently still maintained and under ongoing development. The latest version is 6.50 and has been released as freely distributable. With this release, MDOS has been relabeled as '''Geneve OS'''. You can download a [[Geneve OS\|disk image]] for use in the MESS emulator.		MDOS is currently still maintained and under ongoing development. The latest version is 6.50 and has been released as freely distributable. With this release, MDOS has been relabeled as '''Geneve OS'''. You can download a [[Geneve OS\|disk image]] for use in the MESS emulator.

			The GeneveOS may be booted from a Horizon RAMdisk ([[Booting_MDOS_from_Horizon_Ramdisk\|Instructions for setup]]).

	== Modifications ==		== Modifications ==

Mizapf: /* Features */

2019-06-10T21:15:33Z

Features

← Older revision		Revision as of 21:15, 10 June 2019
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	* 512 KiB System RAM (expandable to 2 MiB)		* 512 KiB System RAM (expandable to 2 MiB)
	* 128 KiB Video RAM		* 128 KiB Video RAM
	* ~~Compatible~~ Video ~~Controller~~, ~~introducing~~ new ~~resolutions~~		* [[V9938 Video Data Processor \| Video Data Processor V9938]], backward compatible with the TMS9928/9 with many new features
	* Real-time clock		* Real-time clock
	* TMS 9995 processor on 12 MHz speed		* TMS 9995 processor on 12 MHz speed

Jedimatt42: /* MDOS 2.50 and greater can be run without this mod, if the user has 1 of 2 available external memory expansions. */

2019-04-28T16:55:40Z

MDOS 2.50 and greater can be run without this mod, if the user has 1 of 2 available external memory expansions.

← Older revision		Revision as of 16:55, 28 April 2019
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	<div style="clear:both"></div>		<div style="clear:both"></div>

	=== Memory Expansion ===		=== Onboard Memory Expansion ===

	[[Image:Geneve_mexp.jpg\|200px\|right]]		[[Image:Geneve_mexp.jpg\|200px\|right]]

	Another popular extension is the CPU memory upgrade to 576 KiB. This modification is mandatory if MDOS 2.50 and above shall be used. The multi-layered printed board layout makes such modifications pretty difficult (if possible at all), but in this case it is only required to solder another SRAM piggy-back onto the existing RAM circuit. One of the select lines must be connected to the Gate array. Here are the detailed [[Geneve CPU Memory Upgrade \| instructions]].		Another popular extension is the CPU memory upgrade to 576 KiB. This modification is mandatory if MDOS 2.50 and above shall be used without an additional memory expansion board. The multi-layered printed board layout makes such modifications pretty difficult (if possible at all), but in this case it is only required to solder another SRAM piggy-back onto the existing RAM circuit. One of the select lines must be connected to the Gate array. Here are the detailed [[Geneve CPU Memory Upgrade \| instructions]].

Mizapf: /* Technical details */

2015-09-14T15:04:38Z

Technical details

← Older revision		Revision as of 15:04, 14 September 2015
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	* [[Geneve wait state generation\|Wait state generation]]		* [[Geneve wait state generation\|Wait state generation]]
	* [[Geneve External bus definition \| External bus definition]]		* [[Geneve External bus definition \| External bus definition]]
			* [[Geneve drive remapping \| Drive remapping]]

	[[Category:Hardware]]		[[Category:Hardware]]
	[[Category:Geneve]]		[[Category:Geneve]]

Stefan Haubenthal at 14:11, 10 June 2015

2015-06-10T14:11:40Z

← Older revision		Revision as of 14:11, 10 June 2015
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	In 1987, Myarc - already known in the TI community for several peripheral expansion cards - launched the Geneve 9640, a complete computer on a card, intended to replace the original TI console.		In 1987, [[Myarc]] - already known in the TI community for several peripheral expansion cards - launched the '''Geneve 9640''', a complete computer on a card, intended to replace the original TI console.

	[[Image:Geneve_expansion_card.jpg\|200px\|left]]		[[Image:Geneve_expansion_card.jpg\|200px\|left]]

Mizapf: /* Technical details */

2014-10-17T17:25:47Z

Technical details

← Older revision		Revision as of 17:25, 17 October 2014
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	* [[Geneve GPL Interpreter]]		* [[Geneve GPL Interpreter]]
	* [[Geneve wait state generation\|Wait state generation]]		* [[Geneve wait state generation\|Wait state generation]]
			* [[Geneve External bus definition \| External bus definition]]

	[[Category:Hardware]]		[[Category:Hardware]]
	[[Category:Geneve]]		[[Category:Geneve]]

Mizapf at 16:46, 23 January 2013

2013-01-23T16:46:08Z

← Older revision		Revision as of 16:46, 23 January 2013
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	Most important, the Geneve uses the TMS 9995 processor which is compatible to the TMS 9900 from the TI-99/4A, adding four more instructions. The video controller is a MSX 9938 which is also compatible to the TMS 9918 family. In order to increase compatibility, the Geneve offered a "GPL Mode" which reorganized the address layout to the TI-99/4A style. In that way, nearly all TI programs can run on the Geneve without any modification. Cartridges have to be copied to disk as the Geneve does not offer a cartridge slot.		Most important, the Geneve uses the TMS 9995 processor which is compatible to the TMS 9900 from the TI-99/4A, adding four more instructions. The video controller is a MSX 9938 which is also compatible to the TMS 9918 family. In order to increase compatibility, the Geneve offered a "GPL Mode" which reorganized the address layout to the TI-99/4A style. In that way, nearly all TI programs can run on the Geneve without any modification. Cartridges have to be copied to disk as the Geneve does not offer a cartridge slot.

			== Operating system ==

			The Geneve has a built-in boot ROM, but this only provides a simple loader for a disk operating system, which, by some similarities to other known operating systems, was named '''MDOS''' (Myarc Disk Operating System).

			MDOS is currently still maintained and under ongoing development. The latest version is 6.50 and has been released as freely distributable. With this release, MDOS has been relabeled as '''Geneve OS'''. You can download a [[Geneve OS\|disk image]] for use in the MESS emulator.

	== Modifications ==		== Modifications ==