Beware if you make a cable for your TWGS, the pairs have to be flipped/twisted properly otherwise it won't work and stuff could get fried. It isn't a straight IDC-40 to DIP-40 cable!
http://www.reactivemicro.com/product_info.php?cPath=1_26&products_id=68
To kick up the speed, you need slightly faster cache (15-20ns commonly found on 486 motherboards). you have the latest ROM and the 32k cache card. The CPU needs to be replaced with the Sanyo made WDC 65c816-16. For setting the clock speed, you need crystals that are 4X the target speed ex: 40Mhz crystal runs the card at 10Mhz. Right now the card is running at 6.25Mhz, making it an early TWGS that someone upgraded the cache on. Later cards are clocked at 7Mhz.
http://www.reactivemicro.com/product_info.php?cPath=1_26&products_id=68
To kick up the speed, you need slightly faster cache (15-20ns commonly found on 486 motherboards). you have the latest ROM and the 32k cache card. The CPU needs to be replaced with the Sanyo made WDC 65c816-16. For setting the clock speed, you need crystals that are 4X the target speed ex: 40Mhz crystal runs the card at 10Mhz. Right now the card is running at 6.25Mhz, making it an early TWGS that someone upgraded the cache on. Later cards are clocked at 7Mhz.