Four Phase disk packs

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Disk pack and cartridge compatibility guide

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| |--Facit |--Falcom |--Ferranti |--First Computer |--Focus Four

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Marketed by:	Drive Model Number:	Mfg. by:	Mfg.'s Pack:	Nashua Number	Comments
Four Phase	6280-40 M		8285	4420
Four Phase	IV/30, IV40	Diablo 30/31		4415-xx	Check Sectoring
Four Phase	IV/70	Diablo 30/31		4415-xx	Check Sectoring
Four Phase	8240 System	ISS 715-D	8245	4422-8	Obsolete
Four Phase	8260 System	CDC 9760	876	4463	40MB/Obsolete
Four Phase	8260 System	CDC 9877		4464-1	80MB
Four Phase	8261 System	CDC 9762	877/8265	4464	Unformatted
Four Phase	MD705457			4464	Unformatted
Four Phase	8220 / 8230			4415-xx	Check Sectoring
Four Phase	8231		8235	4415-8
Four Phase	8270			N/A	Fixed Disc
Four Phase	8280	CDC Phoenix	91204	4420	13.5MB
Four Phase	6421/MP70 Sys.	CDC	9877	4464-1
Four Phase	3034	Memorex		4439-1
Four Phase	NP/80	4 Phase 8261	8285	4464	Customer to Format
Four Phase	6280			4463	40MB/Obsolete
Four Phase	6281		8285	4464	Customer to Format
Four Phase	IV/60, IV/65	4 Phase 6281	8285	4464
Four Phase	IV/60, IV/65	4 Phase 6280		4463	40MB/Obsolete
Four Phase	4500			4416-xx	Check Sectoring

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