TI-of-TTL is a rear interface for ZX Spectrum (ZX48, ZX128, ZX+2,
ZX+3+fix, TC2048, TC2068+emulator, UK2086+emulator), based on Timex
Interface M-397 (this one from Timex FDD 3000).

Like the Timex Interface M-397:
-uses the same case;
-hasn't through-slot;
-has reset button;
-requires another computer with disk drives;
-can be connected to Timex FDD 3 or Timex FDD 3000;
-is suitable to use TOS A.2, A.4, CP/M etc.

But is better because:
-made in TTL (LS, HCT) technology - hard to damage, easy to repair;
-has 8 times more memory - 32kB EPROM and 8kB SRAM;
-has build-in ZXVGS (now 0.27) - "*.Z80" files can be loaded ("*.TAP"
 loading and TR-DOS emulation require changes in ZXROM);
-with special cable can be connected to Amiga or PC (pC) - what allows
 to use its disks and other devices (COM, TCP/IP);
-has socket to connect with Spectrum's EAR - to load "*.TAP" and "*.TZX"
 files using standard ZXROM contents;
-can have an optional socket to conect with Spectrum's MIC - to "save"
 files using standard ZXROM contents;
-the main (top) button state can be readed in 239 port (reset button is
 on left side);
-is ready to use FLASH EPROM instead of EPROM;
-is the cheapset disk interface for ZX Spectrum, supposing you already
 have a computer with disks and parallel interface; :)
-ZXVGS is still developed and offers more and more.


The price is 80euro what includes:
-TI-of-TTL interface,
-cable to connect Amiga (parallel) or PC (LPT),
-ZXVGS registration fee,
-e-mail based help,
-optional hardware or software (ZXVGS) modification to use TI-of-TTL
 together (in the same time) with other interfaces.