Dobbertin CPM+ - Revision history

Polluks at 20:32, 11 June 2024

2024-06-11T20:32:45Z

← Older revision		Revision as of 20:32, 11 June 2024
Line 7:		Line 7:
	* a RAM-Disk		* a RAM-Disk

	This uses a [[Dk'tronics]]/Dobbertin RAM expansion. It doesn't support Vortex RAM expansion. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions or to partially / fully populated Dobbertin expansions. The Ramdisk is accessible in CPM+ with drive C:. In early versions is was M:.		This uses a [[Dk'tronics]]/Dobbertin RAM expansion. It doesn't support [[Vortex Expansions RAM card\|Vortex RAM expansion]]. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions or to partially / fully populated Dobbertin expansions. The Ramdisk is accessible in CPM+ with drive C:. In early versions is was M:.

	* Support for the Dobbertin HD20 Hard disk		* Support for the Dobbertin HD20 Hard disk

Polluks at 20:30, 11 June 2024

2024-06-11T20:30:38Z

← Older revision		Revision as of 20:30, 11 June 2024
Line 7:		Line 7:
	* a RAM-Disk		* a RAM-Disk

	This uses a Dk'tronics/Dobbertin RAM expansion. It doesn't support Vortex RAM expansion. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions or to partially / fully populated Dobbertin expansions. The Ramdisk is accessible in CPM+ with drive C:. In early versions is was M:.		This uses a [[Dk'tronics]]/Dobbertin RAM expansion. It doesn't support Vortex RAM expansion. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions or to partially / fully populated Dobbertin expansions. The Ramdisk is accessible in CPM+ with drive C:. In early versions is was M:.

	* Support for the Dobbertin HD20 Hard disk		* Support for the Dobbertin HD20 Hard disk
Line 31:		Line 31:


	[[Category:Operating System]][[Category:CP/M]]		[[Category:Operating System]] [[Category:CP/M]]

TFM at 14:59, 19 November 2022

2022-11-19T14:59:37Z

← Older revision		Revision as of 14:59, 19 November 2022
Line 7:		Line 7:
	* a RAM-Disk		* a RAM-Disk

	This uses a Dk'tronics/Dobbertin RAM expansion. It doesn't support Vortex RAM expansion. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions. The Ramdisk is accessible in CPM+ with drive C.		This uses a Dk'tronics/Dobbertin RAM expansion. It doesn't support Vortex RAM expansion. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions or to partially / fully populated Dobbertin expansions. The Ramdisk is accessible in CPM+ with drive C:. In early versions is was M:.

	* ~~support~~ for ~~their~~ HD20 Hard disk		* Support for the Dobbertin HD20 Hard disk

	This requires a HD20 capable X-DDOS because it checks for a specific variable set by X-DDOS if it detects the hard-disk. The main hard disc functions are in bank 0, with common hard disk buffer read/write in the common C7 bank at &FE00. The hard disc is accessible in CPM+ with drive D,E,F and G.		This requires a HD20 capable X-DDOS because it checks for a specific variable set by X-DDOS if it detects the hard-disk. The main hard disc functions are in bank 0, with common hard disk buffer read/write in the common C7 bank at &FE00. The hard disc is accessible in CPM+ with drive D,E,F and G.

Arnoldemu at 16:10, 12 May 2018

2018-05-12T16:10:48Z

← Older revision		Revision as of 16:10, 12 May 2018
Line 29:		Line 29:

	If 60hz is detected the Vertical Sync is set to 16 lines and the hsync is set to 4. Otherwise it remains unchanged.		If 60hz is detected the Vertical Sync is set to 16 lines and the hsync is set to 4. Otherwise it remains unchanged.


			[[Category:Operating System]][[Category:CP/M]]

Arnoldemu at 16:10, 12 May 2018

2018-05-12T16:10:11Z

← Older revision		Revision as of 16:10, 12 May 2018
Line 1:		Line 1:
	Dobbertin implemented their own CPM+.		[[Dobbertin\|Dobbertin Industrie-Elektronik]] implemented their own CPM+.
	The sign on message displays "CP/M Plus Amstrad Consumer Electronics plc".		The sign on message displays "CP/M Plus Amstrad Consumer Electronics plc".

Arnoldemu at 16:02, 12 May 2018

2018-05-12T16:02:27Z

← Older revision		Revision as of 16:02, 12 May 2018
Line 12:		Line 12:

	This requires a HD20 capable X-DDOS because it checks for a specific variable set by X-DDOS if it detects the hard-disk. The main hard disc functions are in bank 0, with common hard disk buffer read/write in the common C7 bank at &FE00. The hard disc is accessible in CPM+ with drive D,E,F and G.		This requires a HD20 capable X-DDOS because it checks for a specific variable set by X-DDOS if it detects the hard-disk. The main hard disc functions are in bank 0, with common hard disk buffer read/write in the common C7 bank at &FE00. The hard disc is accessible in CPM+ with drive D,E,F and G.

			DPB description:
			SPT: &00cc (204) (128 byte records)
			BSH: 5
			BLM: &1f
			EXM: &1
			DSM: &50D
			DRM: &1ff (512 entries in directory)
			AL0/AL1: &00f0 (4 blocks for directory)
			CKS: &8000 (fixed disc)
			OFFS: &0001
			PSH: &02
			PHM: &03

	* supports both 50hz and 60hz displays.		* supports both 50hz and 60hz displays.

	If 60hz is detected the Vertical Sync is set to 16 lines and the hsync is set to 4. Otherwise it remains unchanged.		If 60hz is detected the Vertical Sync is set to 16 lines and the hsync is set to 4. Otherwise it remains unchanged.

Arnoldemu at 18:59, 9 May 2018

2018-05-09T18:59:43Z

← Older revision		Revision as of 18:59, 9 May 2018
Line 3:		Line 3:

	Their CPM+ has:		Their CPM+ has:
	- detects on boot if there is at least 128KB memory and error if there isn't.		* detects on boot if there is at least 128KB memory and error if there isn't.

	- a RAM-Disk		* a RAM-Disk

	This uses a Dk'tronics/Dobbertin RAM expansion. It doesn't support Vortex RAM expansion. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions. The Ramdisk is accessible in CPM+ with drive C.		This uses a Dk'tronics/Dobbertin RAM expansion. It doesn't support Vortex RAM expansion. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions. The Ramdisk is accessible in CPM+ with drive C.

	- support for their HD20 Hard disk		* support for their HD20 Hard disk

	This requires a HD20 capable X-DDOS because it checks for a specific variable set by X-DDOS if it detects the hard-disk. The main hard disc functions are in bank 0, with common hard disk buffer read/write in the common C7 bank at &FE00. The hard disc is accessible in CPM+ with drive D,E,F and G.		This requires a HD20 capable X-DDOS because it checks for a specific variable set by X-DDOS if it detects the hard-disk. The main hard disc functions are in bank 0, with common hard disk buffer read/write in the common C7 bank at &FE00. The hard disc is accessible in CPM+ with drive D,E,F and G.

	- supports both 50hz and 60hz.		* supports both 50hz and 60hz displays.

	If 60hz is detected the Vertical Sync is set to 16 lines and the hsync is set to 4. Otherwise it remains unchanged.		If 60hz is detected the Vertical Sync is set to 16 lines and the hsync is set to 4. Otherwise it remains unchanged.

Arnoldemu at 18:51, 9 May 2018

2018-05-09T18:51:42Z

← Older revision		Revision as of 18:51, 9 May 2018
Line 1:		Line 1:
	Dobbertin ~~re-~~implemented CPM+ ~~which includes drivers for their Hard disc~~.		Dobbertin implemented their own CPM+.
			The sign on message displays "CP/M Plus Amstrad Consumer Electronics plc".

	The main hard disc functions are in bank 0, with hard disk read/write in the common C7 bank.		Their CPM+ has:
			- detects on boot if there is at least 128KB memory and error if there isn't.

			- a RAM-Disk

			This uses a Dk'tronics/Dobbertin RAM expansion. It doesn't support Vortex RAM expansion. The size of the RAM expansion is auto-detected allowing ram disk sizes of 62KB, 190KB, 254KB, or 444KB. These correspond to 256KB RAM, 256KB Silicon Disk and combined RAM and Silicon Disk (512KB RAM) expansions. The Ramdisk is accessible in CPM+ with drive C.

			- support for their HD20 Hard disk

			This requires a HD20 capable X-DDOS because it checks for a specific variable set by X-DDOS if it detects the hard-disk. The main hard disc functions are in bank 0, with common hard disk buffer read/write in the common C7 bank at &FE00. The hard disc is accessible in CPM+ with drive D,E,F and G.

			- supports both 50hz and 60hz.

			If 60hz is detected the Vertical Sync is set to 16 lines and the hsync is set to 4. Otherwise it remains unchanged.

Arnoldemu: Created page with "Dobbertin re-implemented CPM+ which includes drivers for their Hard disc. The main hard disc functions are in bank 0, with hard disk read/write in the common C7 bank."

2018-05-09T18:29:17Z

Created page with "Dobbertin re-implemented CPM+ which includes drivers for their Hard disc. The main hard disc functions are in bank 0, with hard disk read/write in the common C7 bank."

New page

Dobbertin re-implemented CPM+ which includes drivers for their Hard disc.

The main hard disc functions are in bank 0, with hard disk read/write in the common C7 bank.