Transporting an LGP-30

On Sat, 24 Dec 2016, william degnan wrote: There are several errors in those notes: - "The basic (hardware) bootstrap in LGP-30 mnemonic format:" There is no hardware bootstrap. - The addresses in the bootstrap loader (program 9.0) must be hexadecimal and the bootstrap is entred as follows: C3W00 - P0000 C3W04 - I0000 C3W08 - C3W14 C3W0J - P0000 C3W10 - I0000 U3W00 - "4-character binary equivalent of the flexowriter single-character ascii commands" Ehm, ASCII wasn't "invented" at that time. There are no Flexowriter commands, the Flexowriter code is the LGP-30 code. - "First "B4627" is converted into binary-coded decimal format and entered into the accumulator" There's no conversion, the character code of the Flexowriter *is* the binary code of the LGP-30. - "The accumulator is actually 64 separate 32-bit accumulators (one for each drum track), same value on each copy." ??? The accumulator is one track with 32 double-width (i.e. 64 bits) sectors. You need the long accumulator when multiplying two 31-bit numbers (you can't store a 32 bit number to the memory because the LSB is always 0) All the registers are circulating registers meaning that the contents is read and immediately written back to ensure that it is accessible at any word (sector) time. Everything you need to know about the architecture and programming of the machine can be found in the manuals BTW (including schematics, flow charts, instruction description etc.). The manuals are online since many many years. Christian