The hardware of the BBC Micro was emulated by a single customized ULA chip designed by Acorn in conjunction with Ferranti.

Pushing down on the metal cover to reseat the ULA was normally sufficient to rectify these issues.

The ULA controlled memory access and was able to provide 32K × 8 bits of addressable RAM using 4 × 64K × 1-bit RAM chips ( 4164 ).

While the ULA would read the display from memory in the usual fashion, the SAA5050 would listen to the data it was reading and produce a mode 7 interpretation of the same information.

The Jupiter ACE was new to the market and the designers couldn't afford to use an uncommitted logic array ( ULA ), a design approach then gaining popularity in other computers ( such as the ZX 81 ) to reduce component count, because these weren't economical in small quantities.

Although he does not appear in Patriot Games, it is later revealed that he was the CIA's liaison with a French black ops unit involved in the campaign against the ULA.

A last minute bug in the ULA as designed meant that the keyboard did not always scan correctly, which was rectified by a " dead cockroach " ( a small circuit board mounted upside down next to the CPU ) for " Issue 1 " ZX Spectrums.

A case in point was the abortive Pandora portable Spectrum, whose ULA had the high resolution video mode pioneered in the TS2068.

An early successful commercial application was the ULA circuitry found in the 8-bit ZX81 and ZX Spectrum low-end personal computers, introduced in 1981 and 1982.

It was actually a standard 600-gate ULA with a VDC program that allowed for two graphic video modes, high-res ( 512x256, monochrome ) and low-res ( 256x256, 4 colors ), and supported hardware vertical scrolling.

Based on ULA chip K1801VP1-035 ( and later on K1801VP1-065 ), the adapter was compatible to DEC DL-11 and KL-11 serial interfaces, but without modem control bits.

A custom circuit from Russian company Angstrem was used instead of the original ULA as a result the screen had a square aspect ratio instead of a rectangle 4: 3.

In early 2001, the ULA held a press conference at CBGBs in New York City which was attended by George Plimpton, staffers at The Paris Review, and staffers of Open City magazine.

Rick Moody was on the NEA panel, and the ULA contested that this was an example of the literati insularly awarding each other.

In April 2006, the ULA protested against the reading of Allen Ginsberg ’ s Howl at Miller Theater at Columbia University, which was hosted by elite literati and had no representation of the " underground ", from which the Beat Generation had sprung.

The modulator was tuned to VHF channel 3 and the TV system was hardware selectable to PAL-M ( 60 Hz ) as used in Brazil, PAL-N ( 50 Hz ) as used in Uruguay, Argentina and Paraguay and NTSC ( 60 Hz ) as used in USA and many other countries, versatility of features the ZX Spectrum never had ** ( Was discover an original ZX Spectrum with NTSC video output in Chile, The ULA is a model 6C011E-3 which generates a NTSC frame size and rate )

The TK 82C ( the C letter stands for " Científico ", or Scientific in English ) was replaced by the TK 83 ( it used a ULA similar chip, as the original ZX81 ) and by the TK 85 ( a 16 KB RAM version with a case similar to ZX-Spectrum ), more robust and with a better design.

( The moniker " King " was taken from a critic of the ULA.

The ULA organized Latin America into 22 zones with each of the 21 Latin American countries constituting a zone, and Phi Iota Alpha representing the 22nd zone in the United States.

The ULA later goes after Ryan and his family, partially as an act of revenge, but primarily because they seek to reduce public ( and specifically American ) support for the rival Provisional Irish Republican Army ( PIRA ).

Since its founding, the ULA has constantly engaged in its own brand of “ literary activism ” which has gained the group a notoriety for exposing what they see as corruption in the American literary world and for harshly criticizing corporate-promulgated literary fiction.

Phi Iota Alpha sponsored the 1932 convention in New York City with the purpose of forming the Union Latino Americana ( ULA ) with hopes of expanding its ideals internationally.

Later, while Ryan hosts the Prince and Princess of Wales at his home in Maryland, the ULA make a second attack on the Ryans, which is foiled by Jack, the Prince, and Commander Robert Jackson, USN.

The Air Force contract required that Delta II be kept ready to launch within 40 days of call up, which led ULA to maintain two launch pads at Cape Canaveral.

In September 1938, the Phi Sigma Alpha zone decided to separate from the ULA and eventually, to form Phi Sigma Alpha Fraternity of Puerto Rico which exists to this day.

The unit contained a ULA which worked on a WRITE command from the microprocessor, a ROM containing the keyword speech patterns, and an SP0256-AL2 speech processor.

NASA solicited proposals for CCDev in October 2010, under which ULA made a proposal for funding to " finish designing a key safety system for potential commercial crew launches on its Atlas and Delta rocket fleet.

The disadvantage to this system is that while the SAA5050 would expect to be repeatedly fed the same 40 bytes of data for every display scanline of each character row, the ULA would read a different set of 40 bytes for every display scanline in order to produce a full graphics display.

Also, some address ranges are considered special, such as link-local addresses for use on the local link only, Unique Local addresses ( ULA ) as described in RFC 4193, and solicited-node multicast addresses used in the Neighbor Discovery Protocol.

While the successor ZX81 used a semi-custom chip ( a ULA or Uncommitted Logic Array ), this merely combined the functions of the earlier hardware onto a single chip — the hardware and system programs ( except the BASIC versions ) were very similar, with the only significant difference being the NMI-generator necessary for slow mode in the ZX81.

The Spectrum reused a number of technologies used in the ZX81, such as some of the same ROM code ( some obsolete routines used for the ZX81 exist in the Spectrum ), and a similar ULA for hardware control.

Although ULA has an extensive launch manifest for future Centaur flights, ULA has been working on an upper stage design concept that would bring the Delta and Centaur stages together into a single new cryogenic second stage design.

However on September 30, 2011, NASA modified the NASA Launch Services II ( NLS-II ) contract to allow for the continuing order of Delta II launchers in agreement with ULA.

ULA has continued to update its product website and continues to state that the vehicle is available for order for commercial or government offices.

Sinclair Research ported an enhanced ZX80 design to a ULA chip for the ZX81, and later used a ULA in the ZX Spectrum.

Acorn Computers used several ULA chips in the BBC Micro, and later managed to compress almost all of that machine's logic into a single ULA for the Acorn Electron.

ULA has since published a paper detailing the changes needed for man-rating EELVs.

The incapacitated terrorist, Sean Miller, is sentenced to life imprisonment for killing the Prince and Princess ' driver ( the maximum penalty in the United Kingdom ) but is freed by members of the ULA as he is being transported to prison.

The ULA protested the 2002 National Endowment for the Arts ( NEA ) award of $ 20, 000 to Jonathan Franzen, an already-wealthy author and highly-publicized best-selling author of The Corrections.

In early 2003, members of the ULA were kicked out of a reading at Housing Works in New York City for heckling readers.

By moving the lowest 8 KB of RAM outside of reach of the ULA, the CPU could always access it at 2 MHz.

While clock speeds were comparable, the 8-bit databus and cycle stealing of the ZX8301 ULA limited the QL's performance.

When O ' Donnell and the ULA spring Miller on his way to Albany Prison ( killing both police officers and civilians in the process ), Ryan and his family become the target of their revenge — particularly Miller's.

He declines initially, only to accept it later after a failed attack on himself and his family by the ULA severely injures his wife and daughter.

Following the incident and arrest of the ULA members and Miller ( whom Ryan nearly executes with his Browning Hi Power ), Ryan is re-assigned to London as a member of a liaison group to the British Secret Intelligence Service.

Solar-thermal monoprop thrusters are also integral to the design of a next-generation cryogenic upper stage rocket proposed by U. S. company United Launch Alliance ( ULA ).

The Advanced Common Evolved Stage ( ACES ) is intended as a lower-cost, more-capable and more-flexible upper stage that would supplement, and perhaps replace, the existing ULA Centaur and ULA Delta Cryogenic Second Stage ( DCSS ) upper stage vehicles.

The Advanced Common Evolved Stage is intended as a lower-cost, more-capable and more-flexible upper stage that would supplement, and perhaps replace, the existing ULA ( Lockheed Martin legacy ) Centaur and the ULA ( Boeing legacy ) Delta Cryogenic Second Stage ( DCSS ) upper stage vehicles.