A Soundblaster DSP based on Intel 80C52 from the beginning of 90's. The die size is large. Each version 4xx has a different firmware burnt in mask ROM.
Available version:
- 405 : mask rom directly visible
- 412 : needs delayering and probably staining
Package
Version 405
DIE
Version 405
Copyright Marking and Processor type seems to be based on a 80C52:
Version 412
To be posted
Map
Version 405
Top metal @ 5x: http://siliconpr0n.org/map/creative-tech/ct1741-v405/mz_neo5x/
- Single (5553×7641, 21.86MB): http://siliconpr0n.org/map/creative-tech/ct1741-v405/single/creative-tech_ct1741-v405_mz_neo5x.jpg
ROM @ 20x: http://siliconpr0n.org/map/creative-tech/ct1741-v405/rom_20x/
- Single (7949×16722, 61MB): http://siliconpr0n.org/map/creative-tech/ct1741-v405/single/creative-tech_ct1741-v405_rom_20x.jpg
