User`s guide

4. OPERATION

POWER-ON

The default behaviour of REMEMOrizer is to boot up in CP/M mode, however, upon power on, the

FPGA on the GODIL on the REMEMOrizer takes two seconds to initialise, and in that time, the MTX

will not see any of the ROM images it provides. As a result, the MTX will almost certainly not boot

CP/M. Two red LEDs are lit during initialisation, and when complete, then they turn off and a green

LED lights instead. Just press the Reset keys after this has happened, and the MTX should see the

ROMs and boot fine.

RESET

Pressing SW1 makes the CP/M boot ROM vanish from the memory map. So if you do this whilst

resetting, the MTX will boot directly to MTX BASIC, not to CP/M. SW1 is the button on the GODIL

marked "No CP/M" in Chapter 3.

The same effect can be achieved with the latest REMEMOrizer by pressing both Shift keys during

resetting.

RAM DISC

The sample SD Card contains a CP/M script which sets up the RAM Disc the first time. To use :-

A>SUB RAMDISC

After running it, reset to boot from RAM Disc.

SD CARD

Each SD Card can have up to 8 8MB partitions. Each of these would contain a CP/M 2.2 filesystem.

A green LED lights up when REMEMOrizer is reading or writing the SD Card. Then it flickers and

turns off. Wait for it to turn off before removing or changing the SD Card.

SAMPLE SD CARD

The package includes a couple of sample SD Card images, in the file sddisc.bin and sddisc2.bin. They

are 8MB SD Card partitions with CP/M 2.2 filesystems. The first has a 59K CP/M system on it, the

second has 54K. If you copy them to the first and second 8MB of a SD Card, you can access them by

configuring type 18 and type 19 drives.

These images have some handy utility files.