----------------------------------------------------------------- Some extracts from IBM BBS-files about Mod. 90 / 95 and platforms ----------------------------------------------------------------- :ndx.BOTH0001 :abs.Comparison of various processor board types :key.type difference :question. There are different 'Types' of processor boards, what makes them different? :answer. | Added information for the Type 4 Pentium card + Added information for the Type 4 DX2-66 card @ Updated to indicate that the Type 3 and 4 cards' memory must be all the same type (either all parity or all ECC). $ Updated to show that the Type 4 cards support 32MB ECC SIMMs # Added Pentium-90 to the list of Type 4 cards Type 1: 25MHz 486DX (-xJx), 33MHz 486DX (-xKx), 20MHz 486SX (-xGx) 50Mhz 486DX w/ optional cache, 66MHz 486DX2 - 1MB/2MB 85ns, 2MB/4MB/8MB 80ns and 70ns parity memory modules supported; they must be installed in matching pairs - 24-bit processor DMA - 256KB cache card available for all systems except the 20MHz 486SX -- optional Type 2: 25MHz 486SX (-xHx), 50MHz 486DX2 (-xLx) - 2MB/4MB/8MB 80ns and 70ns parity memory modules supported; they *should* be installed in pairs to get the best perform- ance for the system. - 24-bit processor DMA - No processor cache card supported (no L2 cache) Type 3: 50MHz 486DX w/ standard 256KB cache (-xMx) - 1MB/2MB 85ns, 2MB/4MB/8MB 80ns and 70ns parity memory modules and 4MB/8MB ECC memory modules supported; they must be @ installed in matching pairs. All installed memory must be of @ the same type (either all parity or all ECC). - 32-bit processor DMA - 256KB write-thru L2 cache standard (imbedded) - Enhanced error-detection - Processor-board identification -- each processor board has a unique identifier assigned; that identifier is viewable via a system-partition utility. Aids in asset management. - Viewable system error log -- utility provided on system- partition to view the information gathered whenever the system experiences an unrecoverable error (e.g. NMI). - Fast system-startup, POST can run in full or fast (initialize only) mode. | - Supports Micro Channel 40MB streaming-data protocols #Type 4: Pentium-60, -66, -90 w/ standard 256KB cache (-xPx, -xQx) + Enhanced 66MHz 486DX2 w/ standard 128KB cache (-xNx) | $ - 2MB/4MB/8MB 70ns parity memory modules and 4MB/8MB/16/32MB ECC | memory modules supported; they must be installed in matching @ pairs. All installed memory must be of the same type (either @ all parity or all ECC). | - 32-bit processor DMA + - 256KB (Pentium) or 128KB (DX2) store-in L2 cache standard | - All advanced features of the "Type 3" board plus | - Flash memory technology -- non-IML system -- provides true | medialess support. | - POST text messages (language phrases accompany all POST | error numbers). | - Bypass system programs on errors feature allows the system | to boot the operating system even in the presence of an | error. :from.Cindy Merkin ----------------------------------------------------------------- :ndx.BOTH0005 :abs.Model/submodel code <-> processor board mapping :key.identification submodel levels :question. When I use the 'Display revision levels' utility that's present on the system partition, I see that the Model byte for my system is F8 and the Submodel byte is 16. What kind of system do I have? :answer. | Updated for the Server 95 and Type 4 processors + Updated for the Enhanced DX2-66 Type 4 processor board @ Updated for the 66 MHz Pentium Type 4 processor board # Updated for the 90 MHz Pentium Type 4 processor board You've got a Model 95 with a 33MHz processor board installed. Here's the list of all Model 90/95 submodels, by processor board. All the 90/95 sys= tems use F8 as their Model byte value. Processor Board Submodel Value | Type Description Model 90 Model 95 Server 95 1 25MHz i486DX . . . . . . . . . . . . 11 14 -- 1 33MHz i486DX . . . . . . . . . . . . 13 16 -- 3 50MHz i486DX (Enhanced) . . . . . . 29 28 -- 1 50MHz i486DX (Original) . . . . . . 2B 2A -- 1 20MHz i486SX . . . . . . . . . . . . 2D 2C -- 1 20MHz i486SX w/ 20MHz i487SX . . . . 2F 2E -- 1 33/66MHz i486DX2 (Original). . . . . 37 36 -- 2 25/50MHz i486DX2 . . . . . . . . . . 3F 40 -- + 4 33/66MHz i486DX2 (Enhanced). . . . . 43 42 44 #@ 4 Pentium-60, -66, -90 . . . . . . . . 45 46 47 2 25MHz i486SX . . . . . . . . . . . . 57 58 -- 2 25MHz i486SX w/ 25MHz i487SX . . . . 59 5A -- 2 25MHz i486SX w/ 25/50MHz ODP486SX . 5B 5C -- :from.Cindy Merkin ----------------------------------------------------------------- :ndx.BOTH0006 :abs.Ordering the Type 1/2 EPROM for >1GB hardfile support :key.iml eprom hardfile order :QUESTION. Does the my Model 95 (or 90) support 1GB hardfiles? Can the system IML from that hardfile, it it's supported? :ANSWER. | Need to note that the EPROM availability 'runs out' 12/31/93. I had | missed that in my reading of the RETAIN TIP. || The previous note about availability running out seems to be || incorrect, as it can still be ordered as of 05/18/95. + Updated to note that the availability of the EPROM Upgrade kits has + been extended -- no more 12/31/93 run-out ... The following information comes from RETAIN (thanks to John Walicki for providing the original), dated 4/20/93: A new version of the system processor board (Stage 1) POST/BIOS code is now available for certain models of the 8590/95 at no cost to customers requesting the upgrade. The upgrade is implemented by changing a module (the EPROM) on the processor board (*not* the system board). The module is available for some Type 1 and Type 2 processor boards *only*. All other processor boards have previously implemented these capabilities. The upgrade provides the following additional capabilities: 1. Adapter ROM memory will be more efficiently utilized to minimize adapter configuration conflicts. 2. BIOS support for fixed disks up to 3.94 gigabytes per device. 3. Supports "Search IML" from any PUN (Physical Unit Number) or SCSI ID. The system partition is no longer restricted to only SCSI ID=6. Each fixed disk ID will be searched for a valid system partition. 4. Allows redundant system partitions (IML). 5. Sharing of SCSI devices. An external SCSI device, such as the 3511, may be shared between two system units. The following models are affected: 1. Type 1 processor systems, Models 0GX, 0JX or 0KX and systems that have been upgraded by a sales feature to 'P3'. (The 'X' in the model number may be any character). Only the following processor boards with an EPROM module label having the following part numbers may be upgraded: PROCESSOR FRU P/N MODEL EPROM P/N LOC. 20MHZ SX 92F0049 0GX 91F9812 U36 25MHZ DX 64F0201 0JX 84F9154 OR 91F9812 U36 33MHZ DX 64F0198 0KX 84F9154 OR 91F9812 U36 50MHZ DX 92F0048 P3 (UPGRADE) 91F9812 U44 2. Type 2 processor systems, Model 0HX. (The "X" in the model number may be any character.) PROCESSOR FRU P/N MODEL EPROM P/N LOC. 25MHZ SX 92F0079 0HX N/A U16 Customers desiring this upgrade may call (toll free) 1-800-845-4263 and request the "8590/95 Dual Booting Capability EPROM Package" for the appropriate processor type as follows: | Type 1 PART NUMBER 52G9509 (was 52G9750 - try this if other | part number is not known) Type 2 PART NUMBER 61G2835 (later P/N 41G9361) NOTE: The following Reference Diskette versions (or later) should also be used. The diskette packages are available from DOSCSD. Type 1 V1.31 Reference Diskette (RF90951A) Type 2 V1.21 Reference Diskette (RF90952A) Type 1/2 V2.0x Diagnostic Diskette (RD9095A) :from.Cindy Merkin and John Walicki -----------------------------------------------------------------