HP2100A core memory (period) prices

Bob supplied some excellent information - if I read it right his is based on the delta between various configuration prices rather than standalone field-addon prices (which may or may not be different!) or individual initial purchase prices. I have individual 8K core board pricing, but it is also possible my pricing is different because of the date of the information. My source is HP mfg. part no 5952-5532, printed 2/77, with "Prices Effective April 1". The publication is "HP 21MX computers Price Information". It also has 2100 cpu, interfaces, and peripherals. This pricelist is rather nice because it includes pricing on all the cabinets and misc. other stuff too - including monthly maintenance costs, cpu slots required, current draw, and prerequisites. 12885A 8K memory modules for field expansion were $3200 list, $16 monthly maintenance. Additional options (at no cost) were: -002 4k words to 12k words or 8k words to 16k words -003 16k words to 24k words -004 24k words to 32k words Along the same lines, I thought I'd provide the cpu pricing of the time for comparison to Bobs info & dates to put it in to time-line perspective. 2100A computer, including programmers console, extended arithemetic instructions, memory parity check with interrupt, power fail interrupt with automatic restart, and memory protect was $11,000 list, $85 monthly maintenance. Note that this was either with no memory or 4k, the pricelist isn't completely clear on this. Options were as follows: -008 computer with 8K memory $2500 list, $16 monthly maintenance -012 computer with 12K memory $4500 list, $24 monthly maintenance -016 computer with 16K memory $5000 list, $32 monthly maintenance -024 computer with 24K memory $7500 list, $49 monthly maintenance -032 computer with 32K memory $10,000 list, $65 monthly maintenance 2100S computer, including programmers console, extended arithmetic instructions, memory parity check with interrupt, power fail/automatic restart, memory protect, 16K words of memory, floating point instructions, DMA, Time Base Generator, and TTY interface was $16300 list, $12 monthly maintenance. Options were as follows: -024 24K memory was $2500 list, no increase in monthly maintenance -032 32K memory was $5000 list, no increase in monthly maintenance Brent wrote... Well, in 1977, you can bank on the above being "hard data". Each word on the 8K core boards was 17 bits (16 data an 1 for parity). Guess you could calculate it with or without parity. Brent wrote.... I'm always happy to talk to anyone about the HP 2100's :) Feel free to give him my contact information, direct email address, etc. The pricelist I'm quoting from above is fairly complete and would allow pricing of a complete system with all interfaces, cabinets, etc. including monthly maintenance. Best regards, Jay West