ICL 1900 Series Computers

Executive Facilities

Executive Processor Description Optional
Features		 Configuration
Restrictions		 Console
Typewriter		 Permissible Peripheral Attachments
*TR *TP *LP *CR *CP *GP *MT(7) *MT(9) *ED *MC *DR *CT *FD *HD *IT/*UX *MX *ID *GD *CC *UD
EX1H 1901 Single-Program
Hand-Switch		 Floating-Point Min. 4K   √ √ √ √ √ √           √                
EX1T 1901/A/S Single-Program Floating-Point
Automatic-Operator		 Min. 8K √ √ √ √ √ √ √ √         √     √         √
EX1V 1901 Single-Program
EDS Overlaid
Automatic-Operator		 Floating-Point Min. 8K
2 EDS Drives		 √ √ √ √ √ √ √ √   √     √               √
E1HS 1901A/S Single-Program
Hand-Switch		 Floating-Point Min. 4K
Max. 8K		   √ √ √ √ √                              
E1TS 1901A Single-Program
for MT Systems		 Automatic-Operator
Floating-Point		 Min. 8K
Max. 16K		 √ √ √ √ √ √ √ √                         √
E1DS 1901A/S Single-Program
for EDS Systems
Automatic-Operator		 Floating-Point Min. 8K
EDS Drive		 √ √ √ √ √ √ √ √   √           √         √
E1MS 1901A/S Single-Program
for TEDS Systems
Automatic-Operator		 Floating-Point Min. 8K
Twin EDS Drives		 √ √ √ √ √ √ √ √   √           √         √
EX2L 1902 Single-Program
Limited-Facility		 Floating-Point Min. 4K √ √ √ √ √ √ √                            
EX2S 1902
1903		 Single-Program Floating-Point
Automatic-Operator		 Min. 8K √ √ √ √ √ √ √ √       √ √     √         √
EX2M 1902
1903		 Dual-Program Floating-Point
Trusted-Program		 Min. 16K √ √ √ √ √ √ √ √   √ √ √       √ √ √     √
EX2V 1902
1903		 Single-Program
EDS Overlaid
Automatic-Operator		 Floating-Point Min. 8K
2 EDS Drives		 √ √ √ √ √ √ √ √   √           √         √
E3TS 1902A
1903A		 Single-Program
for MT Systems
Automatic-Operator		 Floating-Point Min. 8K √ √ √ √ √ √ √ √               √   √     √
E3TE 1902A
1903A		 Single-Program
for MT Systems
Automatic-Operator
Trusted-Program		 Floating-Point Min. 16K √ √ √ √ √ √ √ √ √             √   √     √
E3TM 1902A
1903A		 Multi-Program(4)
for MT Systems
Trusted-Program		 Floating-Point Min. 16K √ √ √ √ √ √ √ √ √             √ √ √     √
E3DS 1902A/S
1903A/S		 Single-Program
for EDS Systems		 Floating-Point Min. 8K
2 EDS Drives		 √ √ √ √ √ √ √ √   √           √   √     √
E3DE 1902A
1903A		 Single-Program
for EDS Systems
Trusted-Program		 Floating-Point Min. 16K
2 EDS Drives		 √ √ √ √ √ √ √ √ √ √       √   √   √     √
E3DM 1902A/S
1903A/S		 Multi-Program(7)
for EDS Systems
Trusted-Program		   Min. 16K
Max. 64K
2 EDS Drives		 √ √ √ √ √ √ √ √ √ √       √   √ √ √     √
E3DG 1902A
1903A		 Disc-Overlaid
for GEORGE 3		   Min. 32K √ √ √ √ √ √ √ √ √ √   √   √   √ √ √     √
E3WS 1902A/S
1903A/S
1901T/2T		 Single-Program
for EDS Systems
Trusted-Program
GEORGE 1S		   Min. 8K
Max. 32K
2 EDS Drives		 √ √ √ √ √ √ √ √ √ √       √   √ √ √     √
E3RM 1902A/S
1903A/S
1901T/2T		 Multi-Program(63)
for EDS Systems
Trusted-Program		   Min. 16K
2 EDS Drives		 √ √ √ √ √ √ √ √ √ √   √   √   √ √ √     √
E3NG 1902A/S
1903A/S
1902T		 Disc-Based
for GEORGE 3		 Floating-Point Min. 32K √ √ √ √ √ √ √ √ √ √   √   √   √ √ √     √
E4BM 1904
1905
(1909)		 Multi-Program(4)
for EDS Systems		 Floating-Point
Trusted-Program		 Min. 16K √ √ √ √ √ √ √ √   √ √ √   √   √ √ √ √   √
E4G3 1904
1905		 Disc-Overlaid
for GEORGE 3		 Floating-Point Min. 16K √ √ √ √ √ √ √ √   √ √ √   √   √ √ √ √   √
E6BM 1904E/F
1905E/F
1906/7		 Multi-Program(16)
for EDS Systems
Trusted-Program		 Floating-Point Min. 16K √ √ √ √ √ √ √ √ √ √ √ √   √   √ √ √     √
EDG3 1906E/F
1907E/F		 Multi-Program(16)
for EDS Systems
Trusted-Program		   Min. 32K √ √ √ √ √ √ √ √ √ √ √ √   √   √ √ √     √
E6G3 1904E/F
1905E/F
1906/7		 Disc-Overlaid
for GEORGE 3		   Min. 32K √ √ √ √ √ √ √ √ √ √ √ √   √   √ √ √     √
E6G4 1906A Disc-Overlaid
for GEORGE 4		   Min. 32K
Paging Unit		 √ √ √ √ √ √ √ √ √ √ √ √   √   √ √ √     √
E6RM 1904
1905
1909
1904E
1904F
1905E
1905F
 1903T
1904A
1904S		 Multi-Program
for EDS Systems
Trusted-Program		 Floating-Point Min. 16K
1 EDS Drives		 √ √ √ √ √ √ √ √ √ √   √   √ √ √ √ √   √ √
EWG3 1906
1907
1904E
1904F
1905E
1905F
 1903T
1904A
1904S
1906A
1906S		 Disc-Based
for GEORGE 3		 Floating-Point Min. 64K √ √ √ √ √ √ √ √ √ √   √   √ √ √ √ √   √ √
EWG4 1903T
1904A
1904S
1906A
1906S		 Disc-Based
for GEORGE 4		 Floating-Point Min. 64K
Paging Unit		 √ √ √ √ √ √ √ √ √ √   √   √ √ √ √ √   √ √