Bank 0 only (16K)
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BIOS = 04/24/81
SW1: 3=ON, 4=ON
SW2: 1=ON, 2=ON, 3=ON, 4=ON
With a video card being the only card plugged in, at power-on, there was a 601 error, then after a while, Cassette BASIC started. BASIC (version C1.00) displayed "12252 Bytes free" .
Powered off. I then added a floppy controller and 360K drive. No DOS boot diskette in the drive. Powered on. The floppy drive was accessed, then after a while, Cassette BASIC started.
Powered off. I then put a DOS boot floppy, of IBM DOS version 3.10, into the drive. Powered on. The floppy drive was accessed, then "PARITY CHECK 1" appeared. On the floppy drive, the access LED stayed on and the spindle continued to turn, even so after a few minutes.
Presumably, the PARITY CHECK 1 was an unfriendly result of IBM DOS 3.10 not being able to cope with only 16K of RAM.
Banks 0 and 1 only (32K)
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BIOS = 04/24/81
SW1: 3=OFF, 4=ON
SW2: 1=ON, 2=ON, 3=ON, 4=ON
With a video card being the only card plugged in, at power-on, there was a 601 error, then after a while, Cassette BASIC started. BASIC (version C1.00) displayed "28638 Bytes free" .
Powered off. I then added a floppy controller and 360K drive. No DOS boot diskette in the drive. Powered on. The floppy drive was accessed, then after a while, Cassette BASIC started.
Powered off. I then put a DOS boot floppy, of IBM DOS version 3.10, into the drive. Powered on. The floppy drive was accessed, then "PARITY CHECK 1" appeared. On the floppy drive, the access LED stayed on and the spindle continued to turn, even so after a few minutes.
Presumably, the PARITY CHECK 1 was an unfriendly result of IBM DOS 3.10 not being able to cope with only 32K of RAM.
Banks 0 and 1 and 2 only (48K)
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BIOS = 04/24/81
SW1: 3=ON, 4=OFF
SW2: 1=ON, 2=ON, 3=ON, 4=ON
With a video card being the only card plugged in, at power-on, there was a 601 error, then after a while, Cassette BASIC started. BASIC (version C1.00) displayed "45020 Bytes free" .
Powered off. I then added a floppy controller and 360K drive. No DOS boot diskette in the drive. Powered on. The floppy drive was accessed, then after a while, Cassette BASIC started.
Powered off. I then put a DOS boot floppy, of IBM DOS version 3.10, into the drive. Powered on. The floppy drive was accessed, then "PARITY CHECK 1" appeared. On the floppy drive, the access LED stayed on and the spindle continued to turn, even so after a few minutes.
Presumably, the PARITY CHECK 1 was an unfriendly result of IBM DOS 3.10 not being able to cope with only 48K of RAM.
All banks (64K)
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BIOS = 04/24/81
SW1: 3=OFF, 4=OFF
SW2: 1=ON, 2=ON, 3=ON, 4=ON
With a video card being the only card plugged in, at power-on, there was a 601 error, then after a while, Cassette BASIC started. BASIC (version C1.00) displayed "61404 Bytes free" .
Powered off. I then added a floppy controller and 360K drive. No DOS boot diskette in the drive. Powered on. The floppy drive was accessed, then after a while, Cassette BASIC started.
Powered off. I then put a DOS boot floppy, of IBM DOS version 3.10, into the drive. Powered on. DOS version 3.10 booted to a DOS prompt.