https://azulscsi.com/aboutazul/
About AzulSCSI firmware
The AzulSCSI firmware looks for file names which adhere to a simple but powerful naming convention, and presents them as the drives to the SCSI
host. Each image file represents a SCSI drive.
As with SCSI2SD, AzulSCSI is designed to power itself solely from SCSI termination power, with no separate power source needed, when the host device/computer provides SCSI termination power. Nearly all desktop
Macintosh computers do, as well as the vast majority of other desktop
systems with SCSI interfaces.
AzulSCSI V1.1 includes an optional DB25 pin header for direct
installation of an external SCSI connector, in addition to the
Single-Ended 50 pin IDC connector. The AzulSCSI V1.1 shares the exact
same dimensions and mounting holes as that of SCSI2SD V5.1, V5.2, and
V6, and is therefore compatible with many existing SCSI2SD-V5.1, V5.2,
and V6 mounting solutions.
Maximum read speeds with AzulSCSI V1.1 can be up to 3.9
megabytes/second, and maximum write speeds of ~2.1 megabytes/second are currently implemented. Throughpout rates can be affected by particularly
slow (eg. 8MHz 68000) CPUs. SCSI controllers can be, and often are, bottlenecks. Since AzulSCSI uses the same SCSI command handling code as
SCSI2SD V6, compatibility with nearly all devices that speak both SCSI-1
and SCSI-2 is extremely high.
Termination is DIP-switch controlled, and firmware updates are as simple
as placing a file on a FAT32 or exFAT-formatted SD card, inserting it in
the SD card slot, and applying power to the AzulSCSI. A firmware
recovery mechanism is also provided, as a back-up.
--- SoupGate-Win32 v1.05
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