ZX Spectrum SE
The SE, codenamed Chloe, is a modified Timex TC2048. The modifications were specified by Andrew Owen and designed and implemented by Jarek Adamski. Within each section, you may find links to additional information elsewhere in this FAQ, or to other reference documents. Read all about it here:
https://www.worldofspectrum.org/faq/reference/sereference.htm
Speccybob is hosted on another URL then worldofspectrum tells us:
http://sblive.narod.ru/ZX-Spectrum/SpeccyBob/SpeccyBob.htm
The circuits are to be found here: