floppy disk controller, and can TR-DOS, BASIC 128, or ASIC 48. The ZXM-Phoenix was introduced in 2008, and uses a KR1858VM1 (Z80A clone) CPU running at 3.5 MHz, or a TMPZ84C00-8 running at 3.5 MHz in normal mode, or 7.0 MHz in turbo mode. It has 1024/2048 KB of RAM, floppy and hard drive controllers, and features mouse support. The ZXM-Alcyon was developed in late 2015, and is based on the transformation of an Igrosoft slot machine board (which uses a Zilog Z80 microprocessor) into a ZX Spectrum compatible machine. The ZXM-Jasper was developed in 2016, and is also based on the Igrosoft board, but its goal was to be a Pentagon-compatible machine The ZXM-Zephyr is a 2013 development, based on the ZXM-Phoenix. It is Spectrum compatible, and adds a USB connection, and an SD card reader. Other AZX-Monstrum The AZX-Monstrum is a proposal for a vastly modernised ZX Spectrum compatible computer. The CPU is a Zilog Z380 (a 32-bit version of the Z80, capable of running at 40 MHz), it has its own graphic adapter, AT-keyboard, own BIOS and extended BASIC-ROM, and RAM expandable up to 4GB linear. The computer is supposed to be almost 100% compatible. Standard devices of are HDD-controller, DMA vs IRQ controller, ROM-Task Switching, and more. So far only the HDD-controller has been produced, but the rest exists as drawings. All the plans are freely available. Just Speccy A ZX Spectrum clone made by Zaxxon. Speccybob The SpeccyBob is a ZX Spectrum clone built entirely around standard 74HC TTL chips and a programmable EPROM. ZX Spectrum SE The ZX Spectrum SE is a proposal for an advanced Spectrum machine, based on the Timex TC 2048 and the ZX Spectrum 128, with Timex graphic modes, and 280K RAM., made by Andrew Owen and Jarek Adamski in 2000. A prototype was created, and this configuration is supported by different emulators. A planned production models of the ZX Spectrum SE are the Chloe 140SE and Chloe 280SE. It subsequently became an FPGA project not directly related to the ZX Spectrum., adds a graphics mode with 320 points (instead of 256) per width and uses a dialect of Microsoft BASIC. ZX128u+ The ZX128u+ is a Spanish clone with the ULAplus display support, using an emulated DivMMC interface as mass storage. The board is based on the Harlequin clone and contains aZ80 processor and AY chip. PLD-based clones These machines