IBM ThinkPad T21 Native DOS Review: Reviving from Blink of Death, and Error 0175, BAD CRC1

Fixing the notorious T20-series "Blink of Death", bypass the 0175: BAD CRC1 BIOS error by patching the DB25 parallel port to , and evaluate the Crystal CS4624 PCI audio chip with Distributed DMA (DDMA) for native DOS Sound Blaster compatibility.

Is the IBM ThinkPad T21 worth the retro tax for native MS-DOS gaming? In this episode we take a $75 "for parts" IBM ThinkPad T21 from completely dead to running Quake at 51 FPS using real hardware fixes and software optimizations.