Memory Expansion Cards - Revision history

Stefan Haubenthal: /* Mechatronics GRAM Karte */ typo

2025-02-02T14:33:00Z

Mechatronics GRAM Karte: typo

← Older revision		Revision as of 14:33, 2 February 2025
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	This rare card duplicated the functionality of the TI 32K Memory Expansion card. It did not come with a clam shell case. Only a dozen or so of these cards are known to survive.		This rare card duplicated the functionality of the TI 32K Memory Expansion card. It did not come with a clam shell case. Only a dozen or so of these cards are known to survive.

	== ~~Mechatronics~~ GRAM Karte ==		== Mechatronic GRAM Karte ==

	TODO		TODO

Stefan Haubenthal: /* Horizon Ramdisk 1000/2000/3000/4000 Series */

2025-02-02T13:01:35Z

Horizon Ramdisk 1000/2000/3000/4000 Series

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 == Horizon Ramdisk 1000/2000/3000/4000 Series ==
-TODO
+The Horizon Ramdisk 1000 utilized a proprietary interface that allowed it to be easily integrated into existing computer systems. It was available in various sizes, ranging from 32MB to 512MB, catering to different user needs and system requirements. Unlike HDDs, which relied on moving parts, the Horizon Ramdisk 1000 was entirely solid-state, making it less prone to physical wear and tear, and thus more reliable.
 == Horizon P-GRAM Card ==

Stefan Haubenthal: /* GRAM Card */

2020-11-11T23:24:26Z

GRAM Card

← Older revision		Revision as of 23:24, 11 November 2020
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	This card was developed at the TI laboratory in Almelo, Holland, apparently as an alternative to the external GROM device developed in the US. It was completely unknown to users until after TI withdrew from the home computer market and served as a proof-of-concept template from which the Mechatronics GRAM Karte was eventually developed. Only four examples of the card survive, all of them rescued from a dumpster by a sharp-eyed TI enthusiast who once worked at the Almelo labs.		This card was developed at the TI laboratory in Almelo, Holland, apparently as an alternative to the external GROM device developed in the US. It was completely unknown to users until after TI withdrew from the home computer market and served as a proof-of-concept template from which the Mechatronics GRAM Karte was eventually developed. Only four examples of the card survive, all of them rescued from a dumpster by a sharp-eyed TI enthusiast who once worked at the Almelo labs.

	The card uses the same GRAM header format as the Mechatronics GRAM Karte. It has a special cartridge board attached to a cable on the card which must be inserted into the computer's cartridge port to make the programs stored in the card available to the computer. They will then appear normally on the menu screen and start when selected. Unlike the Miller's Graphics GRAM Kracker, this card does not simulate GROMs 0, 1, and 2. Only the cartridge port GROMs and ROMs are simulated.		The card uses the same GRAM header format as the Mechatronics GRAM Karte. It has a special cartridge board attached to a cable on the card which must be inserted into the computer's cartridge port to make the programs stored in the card available to the computer. They will then appear normally on the menu screen and start when selected. Unlike the [[Miller's Graphics]] GRAM Kracker, this card does not simulate GROMs 0, 1, and 2. Only the cartridge port GROMs and ROMs are simulated.

	== Atronics 32K Memory Expansion ==		== Atronics 32K Memory Expansion ==

Jedimatt42: /* clarification of testing Thiery's board design */

2019-04-28T18:43:54Z

clarification of testing Thiery's board design

← Older revision		Revision as of 18:43, 28 April 2019
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	* [https://www.harmlesslion.com/text/TI%2032k%20Mod.pdf 2-chip 8 bit internal 32k]		* [https://www.harmlesslion.com/text/TI%2032k%20Mod.pdf 2-chip 8 bit internal 32k]

	~~Thiery~~ Nouspikel details a proposed schematic for a PEB expansion card (labeled as untested). The Jedimatt42 sideport prototype design confirmed 95% of this circuit, ~~before refining~~ to remove some of the bus buffers in the final version.		Thierry Nouspikel details a proposed schematic for a PEB expansion card (labeled as untested). The Jedimatt42 sideport prototype design confirmed 95% of this circuit, except control of RDBENA (the flex cable bus transceiver). The sideport expansion was then refined to remove some of the bus buffers in the final version.

	* [http://www.nouspikel.com/ti99/titechpages.htm Theiry Nouspikel PEB card design]		* [http://www.nouspikel.com/ti99/titechpages.htm Theiry Nouspikel PEB card design]

Jedimatt42 at 17:48, 28 April 2019

2019-04-28T17:48:42Z

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 [[SuperAMS]]
 [[Category:Hardware]]
 [[Category:Expansion]]

Stefan Haubenthal: /* South-West 99ers SAMS Memory Card */

2015-07-17T17:24:54Z

South-West 99ers SAMS Memory Card

← Older revision		Revision as of 17:24, 17 July 2015
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	== South-West 99ers SAMS Memory Card ==		== South-West 99ers SAMS Memory Card ==

	The earliest versions of this card were developed for Asgard Software, and were called the Asgard Memory System. Only a small run of the Asgard card was produced, with most of them going to developers in exchange for promises to write software that used the card. The South-West 99ers carried the design much further, increasing the possible memory size from 128K to 256K and eventually up to 1MB. A full suite of development software that uses the capabilities of the card was developed to allow programmers to easily harness it, but it (hardware and software) reached production readiness too late in the life cycle of the TI-99/4A to get widespread support. This is unfortunate, as it is easily one of the ten best expansion items ever developed for the machine. The card is in production again as a kit (summer 2007), giving the possibility of exciting new software for it if it gains sufficient acceptance within the TI community.		The earliest versions of this card were developed for [[Asgard Software]], and were called the Asgard Memory System. Only a small run of the Asgard card was produced, with most of them going to developers in exchange for promises to write software that used the card. The South-West 99ers carried the design much further, increasing the possible memory size from 128K to 256K and eventually up to 1MB. A full suite of development software that uses the capabilities of the card was developed to allow programmers to easily harness it, but it (hardware and software) reached production readiness too late in the life cycle of the TI-99/4A to get widespread support. This is unfortunate, as it is easily one of the ten best expansion items ever developed for the machine. The card is in production again as a kit (summer 2007), giving the possibility of exciting new software for it if it gains sufficient acceptance within the TI community.

	[[SuperAMS]]		[[SuperAMS]]

Ksarul: /* ICS 32K Memory Interface */

2015-06-28T17:25:18Z

ICS 32K Memory Interface

← Older revision		Revision as of 17:25, 28 June 2015
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	TODO		TODO

	== ICS 32K Memory ~~Interface~~ ==		== ICS 32K Memory Expansion ==

	This rare card duplicated the functionality of the TI 32K Memory Expansion card. It did not come with a clam shell case. Only a dozen or so of these cards are known to survive.		This rare card duplicated the functionality of the TI 32K Memory Expansion card. It did not come with a clam shell case. Only a dozen or so of these cards are known to survive.

Ksarul: /* Captain's Wheel 32K Memory Interface */

2015-06-28T17:24:56Z

Captain's Wheel 32K Memory Interface

← Older revision		Revision as of 17:24, 28 June 2015
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	TODO		TODO

	== Captain's Wheel 32K Memory ~~Interface~~ ==		== Captain's Wheel 32K Memory Expansion ==

	This rare card duplicated the functionality of the TI 32K Memory Expansion card. It did not come with a clam shell case. Only a dozen or so of these cards are known to survive.		This rare card duplicated the functionality of the TI 32K Memory Expansion card. It did not come with a clam shell case. Only a dozen or so of these cards are known to survive.

	== CorComp 32K Memory Interface ==		== CorComp 32K Memory Interface ==

Ksarul at 17:23, 28 June 2015

2015-06-28T17:23:48Z

← Older revision		Revision as of 17:23, 28 June 2015
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	TODO		TODO

			== Captain's Wheel 32K Memory Interface ==

			This rare card duplicated the functionality of the TI 32K Memory Expansion card. It did not come with a clam shell case. Only a dozen or so of these cards are known to survive.

	== CorComp 32K Memory Interface ==		== CorComp 32K Memory Interface ==
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	TODO		TODO

			== ICS 32K Memory Interface ==

			This rare card duplicated the functionality of the TI 32K Memory Expansion card. It did not come with a clam shell case. Only a dozen or so of these cards are known to survive.

	== Mechatronics GRAM Karte ==		== Mechatronics GRAM Karte ==

Ksarul: /* Foundation 32K/128K Memory Card */

2015-06-28T17:11:08Z

Foundation 32K/128K Memory Card

← Older revision		Revision as of 17:11, 28 June 2015
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	This card duplicated the functionality of the TI 32K Memory Expansion card in its basic configuration, but added a 96K RAM Disk when purchased in the expanded, 128K version. The larger card required a DSR to utilize it to its fullest extent, which was sold initially as an option but was automatically included on later sales. Several utility programs were written to take advantage of the card's additional storage capabilities, including Mass Copy by Steve Lawless.		This card duplicated the functionality of the TI 32K Memory Expansion card in its basic configuration, but added a 96K RAM Disk when purchased in the expanded, 128K version. The larger card required a DSR to utilize it to its fullest extent, which was sold initially as an option but was automatically included on later sales. Several utility programs were written to take advantage of the card's additional storage capabilities, including Mass Copy by Steve Lawless.

			Later users devised a modified DSR to allow it to use the Myarc 128K OS--and Myarc Extended BASIC 2.11. Similar modifications exist to allow the card to be expanded to 512K.

	== Horizon Ramdisk 1000/2000/3000/4000 Series ==		== Horizon Ramdisk 1000/2000/3000/4000 Series ==