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A comment on A story about restoring and upgrading a Commodore Amiga 1000. Parent comment

Re:A story about restoring and upgrading a Commodore Amiga 1000 by vardump on Wednesday January 29, 2025 @03:03PM (#42870375)
680[01]0 had only 23 address lines (A1-A23), 16-bit word size, thus 16 MB addressable memory.

There’s also LDS (lower data select) and UDS pins for 8-bit I/O chips.

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Re:A story about restoring and upgrading a Commodore Amiga 1000 by kstrauser on Wednesday January 29, 2025 @03:48PM (#42870961)
Modern AMD64 CPUs only have around 48 address lines, but we don't describe them as 48 bit. Registers and pointers are 32 bit, too.
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Re:A story about restoring and upgrading a Commodore Amiga 1000 by wk_end on Wednesday January 29, 2025 @04:14PM (#42871238)
Likewise, the 6502 and Z80 had 16 address lines, but we never describe them as 16-bit.
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Re:A story about restoring and upgrading a Commodore Amiga 1000 by ddingus on Wednesday January 29, 2025 @07:10PM (#42873133)
Right, it is generally about the ALU.

It is hard to give registers too much weight, because both Moto designs used large registers.

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