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Text File | 1987-11-10 | 27.6 KB | 633 lines

>>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #34 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> PC6310 Parts List/Codes <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PC6310 PARTS LIST COMCODE PEC Code MS-DOS 3.2 405273103 1021-012 MS-DOS 3.2 with AT&T Windows 1021-015 PC6310 User's Guide 105293526 1637-010 PC6310 Service Guide 105305049 1637-012 CPU31 (1.2mb mfdu only) 405371428 3707-031 CPU32 (1.2mb mfdu / 20mb hdu) 405371436 3707-032 CPU34 (1.2mb mfdu / 40mb hdu) 405371444 3707-034 CPU36 (1.2mb mfdu / 70mb hdu) 405394321 3707-036 20mb HDU (85ms/slim) 405371386 40mb HDU (40ms/slim) 405394297 68mb HDU (30ms/full) 405371394 1.2mb MFDU 405394701 Keyboard model 303 405375841 37140 Replaceable Battery 405371493 Bus Adapter Board 405371519 FDC Controller 405371535 Video Controller 405371543 Motherboard 512K 405371550 Combo Controller (HDU/FDC) 405397027 Fan Assembly w/grommets 405371295 Keylock 405371311 Mechanical Assy Kit (rails) 405371402 Power Supply LA21/01 405371329 Display Enhancement Board 403350945 37306 Math Coprocessor 80287 405023078 37565 Monitor 313 Green 403351349 37313 Monitor 318/H Color 405004748 37318 512K Chip Set 405023052 37561 MFDU Power Cable 405371469 Motherboard Power Cable 405375189 HDU LED Cable 405375171 Video Controller Power Cable 405375213 Monitor Extension Cables (Mono) 403351315 2724-70K Monitor Extension Cables (Color) 403309545 2724-72K >>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #35 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> PC6312 Parts List/Codes <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PC6312 PARTS LIST COMCODE PEC Code MS-DOS 3.2 405273103 1021-012 MS-DOS 3.2 with AT&T Windows 1021-015 PC6312 User's Guide n/a n/a PC6312 Service Guide n/a n/a CPU51a (1.2mb mfdu only) n/a 3707-051 CPU52 (1.2mb mfdu / 20mb hdu) n/a 3707-052 CPU54 (1.2mb mfdu / 40mb hdu) n/a 3707-054 CPU56 (1.2mb mfdu / 68mb hdu) n/a 3707-056 20mb HDU (85ms/slim) 405371386 40mb HDU (40ms/slim) 405394297 68mb HDU (30ms/full) 405371394 135mb HDU 405517236 1.2mb MFDU 405517244 Keyboard model 304 405504499 Replaceable Battery 405371493 Bus Adapter Board n/a FDU Controller 405371535 ST506 Combo Controller 3:1 405397027 ST506 Combo Controller 1:1 n/a ESDI Controller 3:1 405517459 ESDI Controller 1:1 405555897 Fan Assembly w/grommets 405371295 Keylock 405371311 Mechanical Assy Kit (rails) 405371402 37142 Power Supply LA21/01 405371329 Display Enhancement Board 403350945 37306 Math Coprocessor 80287/8mz n/a Monitor 313 Green 403351349 37313 Monitor 318/H Color 405004748 37318 512K Chip Set 405023052 37561 HDU Data cable (34 pin) 403846892 HDU Control cable (20 pin) 403846900 MFDU Power Cable 405371469 Motherboard Power Cable 405375189 HDU LED Cable 405375171 Video Controller Power Cable 405375213 Monitor Extension Cables (Mono) 403351315 2724-70K Monitor Extension Cables (Color) 403309545 2724-72K >>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #36 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> The AT&T PC6310 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< The PC 6310 is the new top of the AT&T PC product line in terms of price and performance. It is designed to meet the business needs of the individual "power user," and with its large hard disk capacity can also be a LAN file server or multi-user workstation. As an Intel (TM) 80286-based workstation, the PC 6310 is highly compatible with the IBM PC/AT for application software, hardware, and peripheral support. PC 6310 purchasers who are stepping up from the first generation PC's will be able to use most or all of their expansion boards, whether those were designed for PC/PC XT-compatible or PC/AT-Compatible machines. The PC 6310's support for three half-height magnetic storage devices (or one half-height and one full-height) provides unusual flexibility in configuration. Along with the wide range of AT&T enhancement options and peripherals, this allows the user to tailor the PC 6310 for a variety of uses. FEATURES AND BENEFITS Central Processing Unit The PC 6310's Intel 80286 microprocessor runs at 8 MHz with one wait state, providing MS-DOS benchmark performance equal to that of the 8 MHz IBM PC/AT. This speed is approximately 7% faster than the PC 6300 PLUS and 25% faster than the original (6 MHz) IBM PC/AT. The motherboard has a socket and circuitry for the Intel 80287 math co-processor, with provision to operate it at 5.3 MHz or 8 MHz. The co-processor offers even higher performance in arithmetic-intensive applications. Users of engineering and CAD applications, specialized graphics packages, and very large spreadsheets will benefit from the additional speed. Serial and parallel port connections, PC/AT-Compatible sound circuitry, and clock/calendar with battery backup are all standard. The CPU front panel has a security lock, three LEDs, and speaker volume control. RAM and RAM Expansion All configurations come standard with 512KB RAM on the motherboard with the exception of the 68MB hard disk unit which comes standard with 1MB of RAM on the motherboard. Additional 256 kilobit chips can be added to expand memory to a total of 1MB of RAM. Commercially manufactured 16-bit, AT-style memory expansion boards with 512KB, expandable to 2MB in 256KB increments, are available from outside vendors. The three available AT-type slots will accommodate three expansion boards for a total system RAM of up to 7MB. Note: The AT&T Enhanced Memory Board is NOT compatible with the PC 6310. Magnetic Storage Devices The standard, intermediate, and high-capacity configurations include 20MB, 40MB, and 68MB hard disk drives respectively. The 40MB and 68MB disks offer 40msec or better access time. The first two are half-height or "slim" units, while the 68MB drive is full-height. Configurations All configurations with the exception of the 68MB hard disk unit come standard with 512KB RAM. The 68MB hard disk unit comes standard with 1MB RAM on the motherboard. The AT&T Keyboard Model 303 is recommended, however, the AT&T Keyboard Model 302 can also be used. Both the AT&T monochrome monitor Model 313 and color monitor Model 318 can be used with all configurations. CPU 31: 1.2MB single floppy disk drive CPU 32: 1.2MB floppy disk drive 20MB hard disk and CPU 34: 1.2MB floppy disk drive 40MB hard disk and CPU 36: 1.2MB floppy disk drive 68MB hard disk Note: AT&T will not offer a 360KB Floppy Disk. AT&T PC 6310 SPECIFICATIONS Standard Features Processor Intel 80286 Clock Speed 8 MHz (1 wait state) Bus compatibility PC/AT Disk Configurations 1.2MB FD/512KB RAM & Standard RAM 1.2MB FD & 20MB HD/ 512KB RAM 1.2MB FD & 40MB HD/ 512KB RAM 1.2MB FD & 68MB HD/ 1MB RAM Expansion Slots 2 8-bit (PC/PC XT type) 4 16-bit (PC/AT type) 1 proprietary 16-bit* Serial Port Yes Parallel Port Yes Clock Calendar Yes Graphics 640 x 400 Keyboard 101 Key (Standard) 84 Key (Optional) Operating System MS-DOS 3.2 R1.0 XENIX Version 1.00 Optional Features Multi-User Yes/XENIX Multi-Tasking Yes/XENIX User Interface Yes Modem Yes Tape Backup 60MB (External) Math co-processor 80287 3270 SNA/BSC Yes AT&T STARLAN connectivity Yes *AT&T Display Enhancement Board ONLY >>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #37 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> Questions and Answers Concerning the AT&T PC6310 <<<<<<<<<<<<<<<<<<<<<<<<< 1) Q. When can we order the AT&T PC 6310? A. The AT&T PC 6310 is currently in DOSS under Controlled Introduction status. General availability is currently scheduled for March 1987, for all PC 6310 configurations. 2) Q. What AT&T Keyboards work with the PC 6310? A. The AT&T Keyboard Model 303 (101 Key) is the recommended keyboard. The layout of this keyboard is similar to the IBM Enhanced PC Keyboard sold with the IBM PC/AT and the IBM PC XT/286. The AT&T Keyboard Model 302 (84 Key - introduced with the PC 6300 PLUS) also works with the PC 6310. The AT&T Keyboard Model 301 (83 key - introduced with the PC 6300) does not currently work with the PC 6310. 3) Q. Does the AT&T Mouse work with the PC 6310? A. The AT&T Mouse does not work with the AT&T Keyboard Model 303. It does work with the AT&T Keyboard Model 302 (84 Key). If a mouse is desired in a PC 6310 using the Model 303 keyboard, a serial port type mouse is required (along with mouse driver software). 4) Q. What AT&T Monitors work with the PC 6310? A. The PC 6310 uses the same monitors as the PC 6300 and the PC\6300 PLUS. Both the Monochrome Monitor Model 313 and the Color Monitor Model 318 work with the PC 6310. 5) Q. What MS-DOS version must be ordered with the AT&T PC 6310? A. Only MS-DOS version 3.2 will run on the PC 6310. AT&T MS-DOS versions 2.1 and 3.1 do not run on the PC 6310. 6) Q. What multi-user operating system can be ordered for the AT&T PC\6310? A. XENIX Version 1.00 operating system can be used with the PC\6310 when requiring a multi-user environment. 7) Q. How can I order XENIX Version 1.00 operating system? A. It may be purchased from the Santa Cruz Operation by calling 408-425-7222. 8) Q. How much RAM comes standard on the 68MB hard disk unit? A. The 68MB hard disk unit comes standard with the 1MB RAM on the motherboard. Please Note: The AT&T PC 6310 Marketing Guide is incorrect. 9) Q. How can I expand the memory to the maximum 7MB? A. For all configurations except the 68MB hard disk unit (comes standard with 1MB RAM), to reach the maximum 1MB on the mother- board you populate the motherboard with an additional 512K of RAM using 256K chips. Please Note: The motherboard must be populated in increments of 512K only. To expand memory by an additional 6MB you can add up to 3 commercially available AT compatible memory expansion type boards in the 3 - 16 bit slots. The AT&T Enhanced Memory Board announced for use with the PC\6300 PLUS does NOT work with the PC 6310. 10) Q. What type of expansion slots are available on this product. A. - (4) AT-type 16-bit - (2) XT-type 8-bit - (1) AT&T proprietary 16-bit (like 6300 & 6300 PLUS) The AT and XT type slots both can accommodate 8-bit card The AT&T proprietary 16-bit slot can only accommodate the 16-bit DEB board. It also accommodates some (but not all) 8-bit XT-type boards. 11) Q. How many expansion slots are available? A. Six expansion slots are always available in all AT&T PC 6310s as purchased from AT&T. The single floppy units are equipped with a floppy disk controller card. In order to add a hard disk drive of the single floppy unit, a hard disk controller must be installed. All hard disk models ordered from AT&T will be shipped with a "combo" disk controller. This "combo card", takes up one 16-bit AT-type slot, and controls both the hard disk drive and floppy disk drive. Hence 6 slots are available for other boards. 12) Q. What do I need other than a commercially available hard disk drive or floppy disk drive in order to add an additional internal peripheral to my PC 6310? A. You must order the "PC 6310 Mechanical Assembly Kit", which consists of the screws and brackets required to upgrade the configuration. For a quantity of 5 or more kits you may place an order in DOSS: PEC 37142, list price $15. For quantities of 1 to 4, you must order the "Mechanical Assembly Kits" COMCODE 405371402, through the National Parts Sales Center (NPSC) on 1-800-222-PART. 13) Q. Can we order an 80287 Math co-processor chip from AT&T for the PC\6310? A. At this time, AT&T does not sell an 80287 math co-processor for the PC 6310. Although AT&T sells an 80287 chip for the PC 6300 PLUS, it is a 6MHz chip and will not run on the 8MHz PC 6310 Commercially available 8MHz 80287 chip can be purchased for the PC 6310. 14) Q. What hardware and software is known to be compatible with the AT&T PC 6310? A. The AT&T PC 6310 is designed to be highly compatible with the IBM PC/AT. To date, we have been able to test a number of hardware and software products to verify compatibility. >>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #38 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> PC6310 I/O Address Map <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Input/Output Address Map for the PC6310 is as follows: ADDRESS DEVICE ------- --------------------------------------------------------- 000-01F DMA Controller #1 (8237A-5) 020-03F Interrupt Controller #1 (8259A) 040-05F Interval Timer (8254-2) 060-06F Keyboard Controller (8742), Control Port B 070-07F Real Time Clock (RTC) and CMOS RAM (HD146818), NMI Mask (write) 080-09F DMA Page Register (Memory Mapper) 0A0-0BF Interrupt Controller #2 (8259A) 0C0-0D0 DMA Controller #2 (8337A-5) 0F0 Clear NDP (80287) Busy 0F1 Reset NDP (80287) 0F8-0FF Numeric Data Processor (80287) 1F0-1F8 Hard Disk Controller 200-207 Reserved for Game Card 278-27F Reserved for Parallel Port #2 (LPT2:) 2F8-2FF Reserved for Serial Port #2 (COM2:) 300-31F Reserved 360-36F Reserved 378-37F Parallel Port #1 (LPT1:) 380-38F Reserved for SDLC Communications Controller Card, Bisynchronous Card #2 3A0-3AF Reserved for Bisynchronous Card #1 3B0-3BF Reserved for Monochrome Video Display Adapter 3C0-3CF Reserved 3D0-3DF Color Video Display Controller (Indigenous Display Controller) 3F0-3F7 Diskette Drive Controller 3F8-3FF Serial Port #1 (COM1:) >>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #39 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> PC6310 Hardware Interrupts <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< IRQ 0 Timer IRQ 1 Keyboard Controller IRQ 2 Daisy chained to second interrupt controller IRQ 3 Open for use on Expansion Slots IRQ 4 Serial Port #1 (COM1:), also available on Expansion Slots IRQ 5 Open for use on Expansion Slots IRQ 6 Floppy Diskette Controller IRQ 7 Parallel Port #1 (LPT1:), also available on Expansion Slots IRQ 8 Clock/Calendar IRQ 9 Open for use on Expansion Slots IRQ 10 Open for use on Expansion Slots IRQ 11 Open for use on Expansion Slots IRQ 12 Open for use on Expansion Slots IRQ 13 80287 Numeric Data Processor IRQ 14 Hard Disk Controller (if present - otherwise open for use on Expansion Slots) IRQ 15 Open for use on Expansion Slots INTEL 8259 (#1) ┌─────────┐ │ 0├─ IRQ 0 │ 1├─ IRQ 1 INTEL 8259 (#2) │ 2├──────────┐ TO 80286 ----│INT 3├─ IRQ 3 │ ┌─────────┐ │ 4├─ IRQ 4 │ │ 0├─ IRQ 8 │ 5├─ IRQ 5 │ │ 1├─ IRQ 9 │ 6├─ IRQ 6 │ │ 2├─ IRQ 10 │ 7├─ IRQ 7 └───────┤INT 3├─ IRQ 11 └─────────┘ │ 4├─ IRQ 12 │ 5├─ IRQ 13 │ 6├─ IRQ 14 │ 7├─ IRQ 15 └─────────┘ >>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #40 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> PC6310 Motherboard Jumper Settings <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ┌───┬───┬───┬───┬───┬───┬───┬───┐ JU1 │ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ └───┴───┴───┴───┴───┴───┴───┴───┘ 1. (pins 1-16) MEMORY P - 512kb on motherboard NP - 1mb on motherboard 2/3. (pins 2-15 and 3-14) USER ROMS P NP - 2764 or 27128 NP P - 27256 4/5. (pins 4-13 and 5-12) BIOS ROMS P NP - 27128 NP P - 27256 6. (pins 6-11) PARALLEL PORT #1 P - enabled NP - disabled 7. (pins 7-10) SERIAL PORT #1 P - disabled NP - enabled 8. (pins 8-9) NOT USED ┌───┬───┬───┬───┬───┬───┬───┬───┐ JU2 │ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ └───┴───┴───┴───┴───┴───┴───┴───┘ 1/2/3/4. (pins 1-16/2-15/3-14/4-13) 80287 CO-PROCPROCEOR P NP NP P - 5.33mz NP P P NP - 8.0mz 5-6. (pins 5-12/6-11) VIDEO CONTROLLER P NP - AT&T Video Card NP P - AT&T DEB P P - 3rd Party Card NP NP - 3rd Party Card 7-8. (pins 7-10/8-9) NOT USED ┌───┬───┬───┬───┐ JU3 │ 1 │ 2 │ 3 │ 4 │ └───┴───┴───┴───┘ 1. (pins 1-8) NOT USED 2. (pins 2-7) DISPLAY CARD TYPE P - Color card or AT&T card NP - Monochrome card 3. (pins 3-6) NOT USED 4. (pins 4-5) NOT USED >>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #41 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> PC6310 Hard Drive Parameter Table <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< TYPE │ SIZE │ CYL │ HEADS │ DRIVE │ │ SPEED ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 1 │ 10mb │ 306 │ 4 │ Standard 10mb │ half 85ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 2 │ 21mb │ 615 │ 4 │ OPE XM5221 │ half 40ms │ │ │ │ Seagate ST225 │ half 65ms │ │ │ │ NEC D3126 │ 3.5" 85ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 3 │ 40mb │ 925 │ 5 │ CDC Wren II │ full 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 4 │ 30mb │ 697 │ 5 │ CDC Wren I │ full 35ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 5 │ 78mb │ 1024│ 9 │ Seagate ST4096 │ full 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 6 │ 42mb │ 820 │ 6 │ OPE XM5340 │ half 40ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 7 │ 42mb │ 615 │ 8 │ NEC D5146H │ half 40ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 8 │ 42mb │ 981 │ 5 │ Tandon TM755 │ half 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 9 │ 42mb │ 981 │ 5 │ CDC Wren II slimline │ half 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 10 │ 52mb │ 1024│ 6 │ Micropolis 1324 │ full 28ms │ │ │ │ Rodime RO413 │ full 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 11 │ 55mb │ 925 │ 7 │ CDC Wren II │ full 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 12 │ 69mb │ 1024│ 8 │ Micropolis 1325 │ full 28ms │ │ │ │ Rodime RO414 │ full 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 13 │ 70mb │ 925 │ 9 │ CDC Wren 2 │ full 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 14 │ 43mb │ 1024│ 5 │ Micropolis 1323-A │ full 28ms │ │ │ │ Microscience HH1050 │ half 28ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 15 │ │ │ │ Reserved │ │ ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 16 │ 20mb │ 612 │ 4 │ OPE XM5220 │ half 85ms │ │ │ │ NEC D5126 │ half 85ms │ │ │ │ OPE XM3220 │ 3.5" 85ms │ │ │ │ Miniscribe M3425 │ half 85ms │ │ │ │ NEC D5126H │ half 40ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 17 │ 20mb │ 612 │ 4 │ Tandon TM362 │ 3.5" 85ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 18 │ 42mb │ 820 │ 6 │ Seagate ST251 │ half 40ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 19 │ 44mb │ 872 │ 6 │ Rodime RO3055 │ 3.5" 40ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 20 │ 20mb │ 612 │ 4 │ Miniscribe M8425 │ 3.5" 68ms ─────┼──────┼─────┼───────┼───────────────────────────┼──────┼──────────── 21-47│ │ │ │ Reserved │ │ >>> AT&T National Systems Support Center BBS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> General Conference Bulletin #42 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>> The AT&T Keyboard Model 303 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< The new AT&T Keyboard Model 303 is a 101-key keyboard. It is recommended for use with the PC 6310, and is designed to work with all AT&T personal computers in the future*. The layout of the keyboard is similar to the "IBM Enhanced PC Keyboard" which is customarily sold with the IBM PC/AT and the IBM PC XT/286. Additional Keyboard Features The Model 303 Keyboard features: o N-Key Rollover o 12 Program Function Keys o Green LEDs for "Num Lock", "Caps Lock" and "Scroll Lock" o Keystroke buffering/buffer overflow o Self Test and Keyboard Enable Command o Auto repeat Order Interval/Availability The Model 303 keyboard will be orderable in conjunction with the PC 6310 and will maintain the same order intervals. Mouse Support Unlike the current 301 and 302 keyboards, the 303 keyboard will not support the current AT&T mouse. If a mouse is desired for use with a PC 6310 and the Model 303 keyboard, a serial port type mouse or a mouse connected to an expansion card is required (along with the mouse driver software). It is designed to work with three different keyboard interfaces. These keyboard interfaces correspond to AT&T Intel-Based Personal Computers currently in production and Personal Computers under development. The result is a versatile keyboard able to connect to the following: Workstation Keyboard Interface PC 6300 Olivetti/AT&T Interface PC 6300 PLUS Olivetti/AT&T Interface PC 6310 Olivetti/AT&T Interface Future PCs IBM PC/XT Interface Future PCs IBM AT Interface An "intelligence" built into the Model 303 keyboard enables it to automatically detect the specific Personal Computer Interface to which it has been connected. * Current ROM BIOS in the PC 6300 and PC 6300 PLUS limit full use of keyboard Model 303 capabilities. Plans are in place to modify ROM BIOS in both PCs to enable them to take advantage of the new keyboard's full capabilities.