Grappler Minus: The Perfect Pairing with SPIISD V2
 
Take your Apple II experience to the next level by combining the Grappler Minus card with the SPIISD V2!
 
The Grappler Minus has been updated to a new version — V1.62!
Here’s what’s new:
 
ACT LED Added:An activity LED is now included. It lights up only when the SmartPort is active, allowing you to visually confirm operation status.What this means is, when the SmartPort is functioning normally, the LED blinks in sync with the SmartPort device and the Grappler Minus.However, when you use the PR#6 command to operate it as a standard Disk II device (instead of a SmartPort device), the LED remains off. This feature makes it easier to analyze and troubleshoot any potential issues.
More Compact PCB Design:The PCB has been reduced in size as much as possible, featuring Apple’s traditional shell-style shape — making it easy to see which side is the front.The number of logic ICs remains the same, but we’ve added transistors and resistors for improved control. *Currently only available in purple.

*All pictures except the main one are of the older version, but we will be gradually replacing them with the newer version v1.62. Last 3 movies are newer version v1.62samples.
Please note that we will NOT send you the older version, but if you would like the older version for some reason, please let us know.

Product details by type
 
Bare PCB only / 8 USD
Kit (necessary parts are included and flashed ROM is included) / 21 USD
Fully assembled card / 28 USD
 
Assemble guide is here
V1.4 Digikey parts list is here. Most of the parts in v1.62 are the same as v1.4, but the following parts have been added:
R1: 1K
R2: 10K
Q1: 2N3906
D1: M3 LED of your choice (any color)
 
What is Grappler Minus?
The Grappler Minus card is a purpose-built solution designed to work seamlessly with SoftSP DIY ROMs. Originally, SoftSP DIY repurposed the Grappler Plus printer interface card (sold by OrangeMicro) to modify Apple's Disk II controller card for Smartport compatibility. Grappler Minus takes this concept further by offering a clean, modern implementation.
 
The Grappler Minus was specifically created to enable the use of SPIISD V2 with Apple II computers.
 
How to Use
Insert the Grappler Minus card into slot 5(or any other slot you want) .
The Disk II controller card (or 52.5 drive card) always goes in slot 6.
Power on your Apple II and press CTRL + RST.
Enter PR#5 and press Return. Enter PR#5 and press Return. *If it is installed in slot 5, enter "#5". If not, enter the Grappler minus card installed slot number after #.
The device connected to the Disk II controller card (e.g., SPIISD V2) will now operate in Smartport mode.
 
Compatible Apple II Models
 
Apple IIe, IIe Platinum, IIe Euro Platinum
Apple II Plus, II Europlus, II J-plus
Note: A Disk II controller card or 52.5 Drive Card is always required.
 
About SoftSP DIY
The Grappler Minus card is designed to use the SoftSP DIY ROM, a creation of Wing Yeung (MFA2 WorkShop/Aka.KbooHK). The design is used with permission and details can be found on MFA2 WorkShop’swebsite.
Please note that SoftSP DIY is different from the standalone SoftSP card designed by Wing Yeung himself, which is available for purchase at Chris Torrence's CT6502 Store.
 
** Older version Grappler Minus 1.4 open-source project is freely available for personal use and can be built by anyone with the right tools and knowledge. Please note: commercial sales are strictly prohibited.
 
Pair the Grappler Minus card and DiskII card with SPIISD V2 to unlock Smartport capabilities on your Apple II system and elevate your retro computing experience!