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Да, описка -- тех самых: The "IBM Personal Computer XT", IBM's model 5160, was an enhanced machine that was designed for diskette and hard drive storage, introduced two years after the introduction of the "IBM Personal Computer". It had eight expansion slots and a 10 MB hard disk (later versions 20 MB). Unlike the model 5150 PC, the model 5160 XT no longer had a cassette jack, but still contained the Cassette Basic interpreter in ROMs. The XT could take 256 kB of memory on the main board (using 64 kbit DRAM); later models were expandable to 640 kB. (The BIOS ROM and adapter ROM and RAM space, including video RAM space [since the video hardware was always an adapter] filled the remaining 384 kB of the one megabyte address space of the 8088 CPU.). То, что 64MB это ой-ой как много, я хорошо понимаю :-) Я ведь сам программировать начал в 1975 году и бОльшую часть моей жизни программировал на машинах с памятью заведомо меньше 1MB.