ZX Spectrum clone based on Altera  EPM7128, non assembled kit of components, fits original case of

ZX Spectrum 48K+ or 48K

  you will receive full kit of components for building replacement board for your non-functional Speccy

  Set of all integrated circuits is tested with ZX 48 Spider board

CPLD EMP7128 and EPROM are pre-programmed

  two ROMs available, selectable by jumper (licence free OpenSE ROM and diagnostic Alford v0.37 )

  RGB video output only, you have to build RGB to SCART Harlequin compatible cable

 Mini Din8, SCART connector and 7 conductor cable 1.45m long for building video cable is included, connection   diagram on the photo

  AY audio output is available on SCART and EAR/MIC connectors

original AY-3-8910 chip or alternative YM2149F is supplied, depends on availability

low efficient LM7805 linear regulator is replaced with modern DCDC converter, overheating is reduced to    minimum

 total consumption of about 0.2A from 12V DC power supply

  the board must be powered from 9-12V DC adapter of any polarity

very good compatibility with original ZX Spectrum, works with DivIDE, DivMMC and other hardware

   documentation is not included, more info on

            https://github.com/konkotgit/ZX-48-Spider

 Important build notes

 C21 10uF capacitor must be replaced with 100uF (included) for proper power on Reset, 5V DCDC converter        slow start causes device fail to reset on power-on if the original 10uF is used

 Q1 BC517 transistor must be replaced with BC548 (included) to make loading from TAPE work properly with      low output level TAPE players or mobile phones. For loading games from Android phone you will need to install 

 the great "PlayZX" app and source your own 3.5mm-3.5mm stereo cable

U3 DCDC power regulator pins must be carefully bent before soldering using pliers, see photos of final assy

 - glueing speaker to fix it to PCB isn't necessarily needed, wires left from resistors do the job

U11 74LS240 must be removed from the socket if you're using extension board with Kempston interface        enabled to avoid conflicts on the data bus

  use small file tool for grinding U5 and U7 sockets on short side else it won't fit due to resistors placed  underneath