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Paper Tape System
- Need either Teletype or high speed reader/punch.
- Real teletype is 10 characters per second. Focal69 is about 8 kB so 13.3 minutes to load. Read errors only detected at end of load.
- High speed 300 characters per second.
- In general you re-punched tape to correct errors. Could write as multiple smaller tapes or create patch tape. Tools did exist for splicing/patching tapes.
- Editor handled source in pages to allow editing files bigger than memory. Read in portion, edit, write to new tape and read in next page.
- Focal, Basic program must fit in memory.
- If you had mass storage paper tape may have been your load and backup.