different bank the OUT 1 instruction needed to be used via 1802 assembler code. Bit 5 and 6 were used for the RAM bank selection (bit 1 to 4 were used for the expansion box slot selection). 80-column card The COMX 80-column card added possibility to use basic with a text mode of . The MC6845 was used as video chip. F&M Joy Card The F&M Joy card was a third-party expansion card which was made in a small quantity. The card had connections for 2 joysticks and came with a simple game and supporting software. Software West Electronics, the company importing the COMX-35 in The Netherlands, provided most of their software for free and without copyrights (or for a small fee for tape, disk and/or shipment). West Electronics also organized different competitions for homebrew software. Homebrew development for the COMX-35 is still active in The Netherlands as a result. The most popular game on the COMX-35 was 'Worm' (known in The Netherlands as 'Eet een wurm'). This was a very basic adaptation of Snake (video game genre). Playing the game long enough would eventually cause it to run out of places to place new food, slowing the game down. Known bugs One can crash the COMX-35 by simply typing 65535 as the line number in BASIC. The BASIC interpreter can be put into a hard-lock by pressing the return key while the 'READY' prompt is displayed. This is because the prompt is treated as a 'READ' command, despite the lack of DATA statements in the program. The '!' symbol in the character set displays a red dot just above the black dot. Emulator Emma 02 is capable of emulating the COMX-35 along with other systems which share a similar chip-set. References External links hobby-site.com - Emma 02 including COMX Emulator hobby-site.com - The COMX-35 at the COMX Club Netherlands old-computers.com - The Comx-35 at old computers.com Home computers 8-bit computers