LowerROM - Revision history

TFM: /* Using the LowerROM Board */

2016-01-22T22:29:26Z

Using the LowerROM Board

← Older revision		Revision as of 22:29, 22 January 2016
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	The LowerROM board can be used to use ~~an auto start~~ lower ROM ~~for FutureOS~~. This way the CPC directly boots into FutureOS without the need of any other ROM. That allows to put another ROM (instead of BASIC) at ROM position 0.		The LowerROM board can be used to use the [[CPC FutureOS lower ROM]]. This way the CPC directly boots into [[FutureOS]] without the need of any other ROM. That allows to put another ROM (instead of BASIC) at ROM position 0.

	[[Category:DIY]] [[Category:Expansion ROM]] [[Category:FutureOS]] [[Category:Peripherals]]		[[Category:DIY]] [[Category:Expansion ROM]] [[Category:FutureOS]] [[Category:Peripherals]]

TFM: /* Using the LowerROM Board */

2016-01-22T22:26:29Z

Using the LowerROM Board

← Older revision		Revision as of 22:26, 22 January 2016
Line 52:		Line 52:


			The LowerROM board can be used to use an auto start lower ROM for FutureOS. This way the CPC directly boots into FutureOS without the need of any other ROM. That allows to put another ROM (instead of BASIC) at ROM position 0.

	[[Category:DIY]] [[Category:Expansion ROM]] [[Category:FutureOS]] [[Category:Peripherals]]		[[Category:DIY]] [[Category:Expansion ROM]] [[Category:FutureOS]] [[Category:Peripherals]]

Arnoldemu: /* Warning / Disclaimer */

2015-08-12T18:33:21Z

Warning / Disclaimer

← Older revision		Revision as of 18:33, 12 August 2015
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	Although I have taken the utmost care preparing this documentation, I do not guarantee that it is error free and I accept no responsibility for damage to anyone’s CPC, other personal equipment or injury inflicted on you or others.		Although I (Bryce) have taken the utmost care preparing this documentation, I do not guarantee that it is error free and I accept no responsibility for damage to anyone’s CPC, other personal equipment or injury inflicted on you or others.


	== The Circuit ==		== The Circuit ==

Bryce at 11:58, 12 November 2012

2012-11-12T11:58:11Z

← Older revision		Revision as of 11:58, 12 November 2012
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	[[Image:LR2.png\|thumb\|380px\|right\|The LowerROM must be connected between the CPC and any ROMBoard being used]]		[[Image:LR2.png\|thumb\|380px\|right\|The LowerROM must be connected between the CPC and any ROMBoard being used]]







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	== The Circuit ==		== The Circuit ==

	~~Schematic~~ diagram to ~~come later.~~...
			[[Image:LowerROM_Sch.png\|600px\|center]]


			The LowerROM Board has been made to be as simple and low cost as possible. As can been seen from the schematic diagram above, the circuit contains no address decoding circuitry. The LowerROM Board simply holds ROMDIS high at all times. However, the ROMDIS on the 50 way connection lead is not connected to the CPCs ROMDIS, rather it is used to disable the LowerROM Boards EPROM, allowing standard ROMBoards to still function as normal.

			The disadvantage of using this method, is that on a CPC+ ROM 7 and the entire cartridge contents are disabled when the LowerROM Board is connected, which means that the standard (non-patched) Plus OS can not be used on this device and without adding ROM 7 on an external ROMBoard, the 6128+ loses its ability to use disks. On a classic CPC6128 this is not an issue as ROM 7 is not disabled when ROMDIS is pulled high.

	== Using the LowerROM Board ==		== Using the LowerROM Board ==
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	The button on the right is a reset switch for the CPC.		The button on the right is a reset switch for the CPC.

	[[Image:LowerROMJumpers.png\|~~thumb~~\|~~600px~~]]
			[[Image:LowerROMJumpers.png\|600px\|center]]

Bryce at 20:26, 5 November 2012

2012-11-05T20:26:09Z

@@ Line 11: / Line 11: @@
 == Description ==
-This page will be completed as soon as I have time...
+The LowerROM Board allows you to replace the internal OS Firmware and BASIC without making any internal modifications. The upper part of ROM 0 contains the BASIC and can be replaced using many standard ROMBoards. The lower portion of ROM 0 contains the OS Firmware, but because it is mapped to a different address range, it is not a feature usually found on normal ROMBoards. This device solves that problem.
 == Warning / Disclaimer ==
@@ Line 20: / Line 20: @@
 == The Circuit ==
 [[Category:DIY]] [[Category:Expansion ROM]] [[Category:FutureOS]] [[Category:Peripherals]]

TFM: /* The Circuit */

2012-10-16T21:01:02Z

The Circuit

← Older revision		Revision as of 21:01, 16 October 2012
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	== The Circuit ==		== The Circuit ==


			[[Category:DIY]] [[Category:Expansion ROM]] [[Category:FutureOS]] [[Category:Peripherals]]

Bryce: Created page with "The LowerROM must be connected between the CPC and any ROMBoard being used == Description == This page will be completed as soon as ..."

2012-10-12T12:46:39Z

Created page with "thumb|380px|right|The LowerROM must be connected between the CPC and any ROMBoard being used == Description == This page will be completed as soon as ..."

New page

[[Image:LR2.png|thumb|380px|right|The LowerROM must be connected between the CPC and any ROMBoard being used]]

== Description ==

This page will be completed as soon as I have time...

== Warning / Disclaimer ==

Although I have taken the utmost care preparing this documentation, I do not guarantee that it is error free and I accept no responsibility for damage to anyone’s CPC, other personal equipment or injury inflicted on you or others.

== The Circuit ==