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Superfo Harlequin 128 Issue 4A
This is a ZX Specrum Clone base on Harlequin by Chris Smith (http://www.zxdesign.info/harlequin.shtml). PCB is the same size as original ZX Spectrum, can be fit in 48K or 48K+ case.
PCB current version is 4A, support 48K, 128K, 128K +2A/+3/+3E ROM
Support ALL RAM mode, you can run CP/M with this board when using with floppy disk interface
Flash ROM 29F040/39SF040 (upto 8 banks of 64K, select by dip switch)
Video signal is ZX Spectrum 48K/128K timing (select by switch)
AY-3-8910 sound chip
Kempston Joystick port
RS232 on board (option)
Composite output, support both PAL and NTSC (There is a footprint to install 3.579MHz oscilator for NTSC)
Use standard ZX Spectrum Adapter, 9V with center pin negative (-) 
Superfo Harlequin 128 Issue 4A
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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