Update readme to include pictures of v1.2 installed, and more details of installation

README.md

@@ -1,12 +1,15 @@
-# Blue-GS: Internal BlueSCSI for Apple IIgs and //e
+# BlueGS: Internal BlueSCSI for Apple IIgs and Enhanced //e
 
 https://github.com/xunker/blue-gs
 
 <!-- TOC -->
 
-- [Blue-GS: Internal BlueSCSI for Apple IIgs and //e](#blue-gs-internal-bluescsi-for-apple-iigs-and-e)
+- [BlueGS: Internal BlueSCSI for Apple IIgs and Enhanced //e](#bluegs-internal-bluescsi-for-apple-iigs-and-enhanced-e)
 - [About](#about)
+- [How it works](#how-it-works)
+- [Features](#features)
 - [Compatible SCSI cards](#compatible-scsi-cards)
+- [Performance](#performance)
 - [Board](#board)
 - [Assembly](#assembly)
   - [Bill-of-Materials](#bill-of-materials)
@@ -36,13 +39,56 @@ https://github.com/xunker/blue-gs
 
 # About
 
-*Blue-GS* is the internal hard drive your Apple IIgs and //e always *craved*.
+*BlueGS* is the internal hard drive your Apple IIgs and //e always *craved*.
 
 Using the [BlueSCSI](https://github.com/erichelgeson/BlueSCSI) SCSI drive emulator and your compatible SCSI card, you have a fully internal hard drive with accessible microSD slot while still keeping your DB-25 connector free for other peripherals.
 
+[![Close-up of BlueGS installed in IIgs slot](images/bluegs_v1.2_rear_installed_cropped_thumb.jpg)](images/bluegs_v1.2_rear_installed_cropped.jpg)
+[![BlueGS installed in IIgs slot, right side](images/bluegs_v1.2_rear_installed_right_thumb.jpg)](images/bluegs_v1.2_rear_installed_right.jpg)
+[![BlueGS installed in IIgs slot, left side](images/bluegs_v1.2_rear_installed_left_thumb.jpg)](images/bluegs_v1.2_rear_installed_left.jpg)
+
+# How it works
+
+BlueGS connects between your SCSI card and its external DB-25 connector to give you a seamless installation. The BlueGS module itself mounts in a free DB-25 connector cutout in the rear of your IIgs or Enhanced //e.
+
+[![Overhead view of BlueGS in IIgs slot](images/bluegs_v1.2_installed_overhead_thumb.jpg)](images/bluegs_v1.2_installed_overhead.jpg)
+[![Frontal view of BlueGS in IIgs slot](images/bluegs_v1.2_installed_front_thumb.jpg)](images/bluegs_v1.2_installed_front.jpg)
+
+# Features
+
+* Gives your Apple IIgs or //e an internal, cable-free hard drive
+* Can be powered from SCSI termination power only (if present)
+* "Termination Power" mod is not required (when powered from the IIgs internal fan connector)
+* Can *provide* termination power to the SCSI bus (when powered from the IIgs internal fan connector)
+* Built-in termination that is controlled with a single switch
+* TI/Unitrode termination ICs instead of passive termination, reduces power consumption by over 2/3rds
+* Connection for external drive activity LED
+
 # Compatible SCSI cards
 
-TBA
+Tested:
+* [GGLabs A2SCSI](https://gglabs.us/node/2071) - a clone of the Apple Rev C SCSI card
+
+Untested, but expected to be compatible:
+* Apple Rev C SCSI and clones
+* Apple High-Speed SCSI ("Sandwich II")
+
+Unknown, but likely compatible:
+* Ramfast SCSI
+* Any SCSI card that uses has the same IDC-26/DB-25 pinout as the Apple Rev C SCSI
+
+If you have an SCSI card with an IDC-26/DB-25 connector that has not been tested and would be willing to test your card with BlueGS, please [contact us](https://github.com/xunker/blue-gs/issues) to arrange to have a test unit sent to you.
+
+# Performance
+
+Using [BenchmarkD](https://www.brutaldeluxe.fr/products/apple2gs/benchmarked.html) with Apple IIgs (ROM 1, "Fast" speed), GS-RAM Plus w/ 2MB, GGLabs A2SCSI card.
+
+
+* Read
+  * File: 52 KB/s
+  * Block-by-block: 36 KB/s
+  * With 64K buffer: 79 KB/s
+* Write (File): 37 KB/s
 
 # Board