NC 100/150/200 IO Specification - Revision history

Polluks at 18:18, 25 June 2023

2023-06-25T18:18:18Z

← Older revision		Revision as of 18:18, 25 June 2023
Line 134:		Line 134:
	Address Comment R/W		Address Comment R/W
	======= ======= ===		======= ======= ===

	00 Display Memory start W		00 Display Memory start W
	20 Memory card wait state W		20 Memory card wait state W

Prodatron: fixed keyboard matrix

2023-06-21T15:01:36Z

fixed keyboard matrix

← Older revision		Revision as of 15:01, 21 June 2023
Line 80:		Line 80:

	B5:		B5:
	bit 0: B		bit 0: ??
	bit 1: V		bit 1: ??
	bit 2: T		bit 2: B
	bit 3: Y		bit 3: V
	bit 4: G		bit 4: T
	bit 5: C		bit 5: Y
			bit 6: G
			bit 7: C

	B6:		B6:
Line 125:		Line 127:
	bit 5: L		bit 5: L
	bit 6: O		bit 6: O
	bit 7: ~~STOP~~		bit 7: .

Polluks at 14:41, 16 September 2015

2015-09-16T14:41:56Z

← Older revision		Revision as of 14:41, 16 September 2015
Line 6:		Line 6:
	during development of my NC200 emulation for M.E.S.S.		during development of my NC200 emulation for M.E.S.S.

	This update does not cover the NC150. I do not have details of any differences		This update does not cover the NC150. I do not have details of any differences between this and the NC100 at this time.
	between this and the NC100 at this time.

	When I have information on this system, it will be documented here.		When I have information on this system, it will be documented here.
Line 14:		Line 13:
	of I/O read/writes.		of I/O read/writes.

	* The NC200 does not have a TC8521 Real Time Clock, instead it		* The NC200 does not have a TC8521 Real Time Clock, instead it has a MC146818 Real Time Clock. The MC146818 is no longer produced now, but is part of many PC designs.
	has a MC146818 Real Time Clock. The MC146818 is no longer produced now,
	but is part of many PC designs.

	* The NC200 has a NEC765 compatible floppy disc controller. The disc		* The NC200 has a [[NEC765]] compatible floppy disc controller. The disc interface was designed by Ranger Computers.
	interface was designed by Ranger Computers.

	The ports listed in this section are different or have additional		The ports listed in this section are different or have additional
Line 26:		Line 22:


	* The NC100 clock speed is 4.~~606Mhz~~, at this time it is unknown if the NC200		* The NC100 clock speed is 4.606MHz, at this time it is unknown if the NC200 has a different clock speed.
	has a different clock speed.

	* The NC100 on/off button generates an NMI.		* The NC100 on/off button generates an NMI.

Ygdrazil at 08:35, 22 August 2014

2014-08-22T08:35:49Z

← Older revision		Revision as of 08:35, 22 August 2014
Line 266:		Line 266:

	[[NC100 IO Specification]]		[[NC100 IO Specification]]

			[[Category:NC Series]]

Arnoldemu at 14:57, 17 September 2010

2010-09-17T14:57:09Z

← Older revision		Revision as of 14:57, 17 September 2010
Line 164:		Line 164:

	bit 7: memory card wait state control: 1 for wait states, 0 for no wait		bit 7: memory card wait state control: 1 for wait states, 0 for no wait
	~~bit 2: ??~~
	~~bit 1: ??~~
	bit 0: NEC765 Terminal Count input (1=TC active, 0=TC inactive)		bit 0: NEC765 Terminal Count input (1=TC active, 0=TC inactive)

Line 178:		Line 176:

	bit 2: Backlight: 1=off, 0=on		bit 2: Backlight: 1=off, 0=on
	~~bit 1: ??~~
	bit 0: on/off control: 1 = on, 0 = off		bit 0: on/off control: 1 = on, 0 = off


			Address = 80
			centronics status

			bit 0: busy state

	Address = A0		Address = A0

Nilquader at 09:19, 17 September 2010

2010-09-17T09:19:15Z

← Older revision		Revision as of 09:19, 17 September 2010
Line 167:		Line 167:
	bit 1: ??		bit 1: ??
	bit 0: NEC765 Terminal Count input (1=TC active, 0=TC inactive)		bit 0: NEC765 Terminal Count input (1=TC active, 0=TC inactive)

			Address = 30 Write only
			Floppy motor control

			bit 3: Floppy motor: 1=off, 0=on

	Address = 70		Address = 70

Arnoldemu at 08:35, 16 September 2010

2010-09-16T08:35:03Z

@@ Line 26: / Line 26: @@
-The NC100 clock speed is 4.606Mhz, at this time it is unknown if the NC200
+* The NC100 clock speed is 4.606Mhz, at this time it is unknown if the NC200
 has a different clock speed.
   Address                 Comment                 	R/W

Arnoldemu at 08:20, 16 September 2010

2010-09-16T08:20:14Z

← Older revision		Revision as of 08:20, 16 September 2010
Line 149:		Line 149:
	E1 = data		E1 = data

	[http://groups.google.com/group/comp.sys.amstrad.8bit/browse_thread/thread/ce201414eff39a29/19cb6f7056d49480?lnk=gst&q=nc100+sound#19cb6f7056d49480 \| Russell Marks's notes about sound generation on NC100]		[http://groups.google.com/group/comp.sys.amstrad.8bit/browse_thread/thread/ce201414eff39a29/19cb6f7056d49480?lnk=gst&q=nc100+sound#19cb6f7056d49480 Russell Marks's notes about sound generation on NC100]

	[[NC100 IO Specification]]		[[NC100 IO Specification]]

Arnoldemu at 08:19, 16 September 2010

2010-09-16T08:19:58Z

← Older revision		Revision as of 08:19, 16 September 2010
Line 149:		Line 149:
	E1 = data		E1 = data

	[[http://groups.google.com/group/comp.sys.amstrad.8bit/browse_thread/thread/ce201414eff39a29/19cb6f7056d49480?lnk=gst&q=nc100+sound#19cb6f7056d49480\|Russell Marks's notes about sound generation on NC100]]		[http://groups.google.com/group/comp.sys.amstrad.8bit/browse_thread/thread/ce201414eff39a29/19cb6f7056d49480?lnk=gst&q=nc100+sound#19cb6f7056d49480 \| Russell Marks's notes about sound generation on NC100]

	[[NC100 IO Specification]]		[[NC100 IO Specification]]

Arnoldemu at 08:19, 16 September 2010

2010-09-16T08:19:37Z

← Older revision		Revision as of 08:19, 16 September 2010
Line 1:		Line 1:
	This update to NCIOSPEC.TXT covers the differences between the NC100 hardware		This update to NCIOSPEC.TXT covers the differences between the NC100 hardware
	(documented in the original NCIOSPEC.TXT below) and the NC200 hardware.		(documented in the original NCIOSPEC.TXT below) and the NC150/NC200 hardware.

	This information was discovered mainly by Russell Marks during development of his		This information was discovered mainly by Russell Marks during development of his
Line 149:		Line 149:
	E1 = data		E1 = data

			[[http://groups.google.com/group/comp.sys.amstrad.8bit/browse_thread/thread/ce201414eff39a29/19cb6f7056d49480?lnk=gst&q=nc100+sound#19cb6f7056d49480\|Russell Marks's notes about sound generation on NC100]]

	[[NC100 IO Specification]]		[[NC100 IO Specification]]