ZuluSCSI - Revision history

PoC: /* Hardware overview */ finished sentence

2026-08-16T21:28:06Z

Hardware overview: finished sentence

← Older revision		Revision as of 23:28, 16 August 2026
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	Usually, the integrated USB port is configured as USB modem, for usage with a terminal emulator. You can use the Linux or macOS ''screen'' command for that. Depending on your operating system, you need to find out what device file is created when plugging the Zulu's USB port. On Linux, it's <tt>/dev/ttyACM''n''</tt> — ''n'' being a digit, usually 0. On macOS, it's <tt>/dev/tty.usbmodem</tt>, with a row of digits appended on behalf of the <tt></tt>.		Usually, the integrated USB port is configured as USB modem, for usage with a terminal emulator. You can use the Linux or macOS ''screen'' command for that. Depending on your operating system, you need to find out what device file is created when plugging the Zulu's USB port. On Linux, it's <tt>/dev/ttyACM''n''</tt> — ''n'' being a digit, usually 0. On macOS, it's <tt>/dev/tty.usbmodem</tt>, with a row of digits appended on behalf of the <tt></tt>.

	The firmware presents a simple menu driven UI for		The firmware presents a simple menu driven UI for some tasks.

	There is no need to shut down the device itself, it's safe to "pull the plug" when there is no activity. The Operating System running on the attached computer should, though.		There is no need to shut down the device itself, it's safe to "pull the plug" when there is no activity. The Operating System running on the attached computer should, though.

PoC: /* Examples */ typo

2026-08-16T21:26:21Z

Examples: typo

← Older revision		Revision as of 23:26, 16 August 2026
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	=== Tape drive support ===		=== Tape drive support ===
	* create directory <code>TP0</code>,		* create directory <code>TP0</code>,
	* populate with one or more 0 byte files named <code>*.tap</code> files, e. g. by using the Unix <code>touch</~~command~~>,		* populate with one or more 0 byte files named <code>*.tap</code> files, e. g. by using the Unix <code>touch</code>,
	* use the serial console to attach image(s) to the drive.		* use the serial console to attach image(s) to the drive.
	* ''zuluscsi.ini'':		* ''zuluscsi.ini'':

PoC: Expanded article

2026-08-16T21:25:30Z

Expanded article

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-'''ZuluSCSI'' is a comparatively new family of SCSI device emulators. Distinct features to older, similar devices is support for Wide-SCSI, Ultra-Speed, and a fast CPU.
+'''ZuluSCSI''' by Rabbit Hole Computing is a comparatively new family of SCSI device emulators featuring an SD card based backing store. Distinct features to older, similar devices is support for Wide-SCSI, Ultra-Speed, and a fast CPU.
 ZuluSCSI also features an OpenSource firmware, so it can be extended comparatively easily.
 __TOC__
 == Current state ==
-In the scope of AS/400's, ZuluSCSI's disk support is still in its infancy, while CD- and tape emulation are seemingly solid. Some progress has been made, but there are still some rough edges, normally leading to crash of the Operating System with a given ''System Reference Code''.
+In the scope of AS/400's, ZuluSCSI's disk support is still incomplete, while CD- and tape emulation are seemingly solid. Some progress has been made, but there are still some rough edges, normally leading to crash of the Operating System with a given ''System Reference Code''.
-At the moment, the firmware supports only a single DASD device type.
+At the moment, the firmware supports only a single AS/400 specific DASD device type for PPC-AS (522&thinsp;Bytes per sector).
 === Reports ===

PoC: Moore precise

2026-08-16T19:56:28Z

Moore precise

← Older revision		Revision as of 21:56, 16 August 2026
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	== Current state ==		== Current state ==
	In the scope of AS/400's, ZuluSCSI's disk support is still in its infancy. Some progress has been made, but there are still some rough edges, normally leading to crash of the Operating System with a given ''System Reference Code''.		In the scope of AS/400's, ZuluSCSI's disk support is still in its infancy, while CD- and tape emulation are seemingly solid. Some progress has been made, but there are still some rough edges, normally leading to crash of the Operating System with a given ''System Reference Code''.

	At the moment, the firmware supports only a single DASD device.		At the moment, the firmware supports only a single DASD device type.

	=== Reports ===		=== Reports ===
	* 2026-08-16, mikerm, 9406-170, Zulu firmware 2026-08-07. Trying to install V4R4 on the Zulu emulated DASD.		* 2026-08-16, mikerm, 9406-170, Zulu firmware 2026-08-07. Trying to install V4R4 on the Zulu emulated DASD. Disk was created with <code>dd if=/dev/zero of=HD6.img bs=522 count=17177940 status=progress</code><ref>Per directions of one of the firmware developers.</ref>
	** First try, ''prefetch'' setting at default (8k): halts at <code>B1934505</code>		** First try, ''prefetch'' setting at default (8k): halts at <code>B1934505</code> after IPL takes place from DASD
	** Second try, ''prefetch'' set to 0: <code>B6080801</code>. More progress, and much quicker LIC install, though.		** Second try, ''prefetch'' set to 0: <code>B6080801</code> after IPL takes place from DASD. More progress, and much quicker LIC install, though.
			** Configuration file used:
			[SCSI]
			LogModeData = 1
			System = AS400_BS522

	== See also ==		== See also ==
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	* [https://zuluscsi.com ZuluSCSI Website] — see the <tt>☰</tt> button top right for more details		* [https://zuluscsi.com ZuluSCSI Website] — see the <tt>☰</tt> button top right for more details
	* [https://github.com/ZuluSCSI/ZuluSCSI-firmware ZuluSCSI-firmware], GitHub		* [https://github.com/ZuluSCSI/ZuluSCSI-firmware ZuluSCSI-firmware], GitHub

			== Footnotes ==
			<references />

	[[Category:Hardware Configuration Guide]]		[[Category:Hardware Configuration Guide]]

PoC: Preliminary

2026-08-16T19:49:26Z

Preliminary

New page

'''ZuluSCSI'' is a comparatively new family of SCSI device emulators. Distinct features to older, similar devices is support for Wide-SCSI, Ultra-Speed, and a fast CPU.

ZuluSCSI also features an OpenSource firmware, so it can be extended comparatively easily.

__TOC__

== Current state ==
In the scope of AS/400's, ZuluSCSI's disk support is still in its infancy. Some progress has been made, but there are still some rough edges, normally leading to crash of the Operating System with a given ''System Reference Code''.

At the moment, the firmware supports only a single DASD device.

=== Reports ===
* 2026-08-16, mikerm, 9406-170, Zulu firmware 2026-08-07. Trying to install V4R4 on the Zulu emulated DASD.
** First try, ''prefetch'' setting at default (8k): halts at <code>B1934505</code>
** Second try, ''prefetch'' set to 0: <code>B6080801</code>. More progress, and much quicker LIC install, though.

== See also ==
* [[Ordinary Harddisks on the AS/400]]
* [[Tape Drives on old AS/400]]
* [[SRC]], aka System Reference Code

== Weblinks ==
* [https://zuluscsi.com ZuluSCSI Website] — see the <tt>☰</tt> button top right for more details
* [https://github.com/ZuluSCSI/ZuluSCSI-firmware ZuluSCSI-firmware], GitHub

[[Category:Hardware Configuration Guide]]