JPS6419387A - Bit map processor - Google Patents

Bit map processor

Info

Publication number
JPS6419387A
JPS6419387A JP62174613A JP17461387A JPS6419387A JP S6419387 A JPS6419387 A JP S6419387A JP 62174613 A JP62174613 A JP 62174613A JP 17461387 A JP17461387 A JP 17461387A JP S6419387 A JPS6419387 A JP S6419387A
Authority
JP
Japan
Prior art keywords
bit
memory
register
length
general purpose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62174613A
Other languages
Japanese (ja)
Other versions
JPH0697393B2 (en
Inventor
Kiichiro Urabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62174613A priority Critical patent/JPH0697393B2/en
Publication of JPS6419387A publication Critical patent/JPS6419387A/en
Publication of JPH0697393B2 publication Critical patent/JPH0697393B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To improve the processing performance of a general purpose processing device by constituting the general purpose register having the length which is twice the data width of the memory and computing and processing the bit mapped memory with an arbitrary bit length from a specified location. CONSTITUTION: The word data read from a bit map memory 1 are set to a general purpose register GR5 constituted with the length which is twice the data transfer width to the memory. Then, a computing element 20 only computes for the amount equivalent to the bit length specified by a bit width register WNR10 against the bit location specified by a source bit address register SBA8 and a destination bit address register DBA9. The updating of the memory and the data register, which is caused when a computing is done beyond the word boundary, is detected by testing a boundary detecting flag 14 during the computation of a bit address and the memory is accessed based on the detection result.
JP62174613A 1987-07-15 1987-07-15 Bitmap processor Expired - Lifetime JPH0697393B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62174613A JPH0697393B2 (en) 1987-07-15 1987-07-15 Bitmap processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62174613A JPH0697393B2 (en) 1987-07-15 1987-07-15 Bitmap processor

Publications (2)

Publication Number Publication Date
JPS6419387A true JPS6419387A (en) 1989-01-23
JPH0697393B2 JPH0697393B2 (en) 1994-11-30

Family

ID=15981652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62174613A Expired - Lifetime JPH0697393B2 (en) 1987-07-15 1987-07-15 Bitmap processor

Country Status (1)

Country Link
JP (1) JPH0697393B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0325684A (en) * 1989-06-23 1991-02-04 Nec Corp Picture drawing controller
JPH0470987A (en) * 1990-07-04 1992-03-05 Mitsubishi Electric Corp Parallel data processing system
WO2005116982A1 (en) * 2004-05-25 2005-12-08 Ssd Company Limited Data processing unit, drawing apparatus and pixel packer
JP2019208715A (en) * 2018-06-01 2019-12-12 株式会社藤商事 Game machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61232491A (en) * 1985-04-09 1986-10-16 日本電気株式会社 Pattern drawing control system for bit map display unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61232491A (en) * 1985-04-09 1986-10-16 日本電気株式会社 Pattern drawing control system for bit map display unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0325684A (en) * 1989-06-23 1991-02-04 Nec Corp Picture drawing controller
JPH0470987A (en) * 1990-07-04 1992-03-05 Mitsubishi Electric Corp Parallel data processing system
WO2005116982A1 (en) * 2004-05-25 2005-12-08 Ssd Company Limited Data processing unit, drawing apparatus and pixel packer
JP2008501126A (en) * 2004-05-25 2008-01-17 新世代株式会社 Data processing device, drawing device, and pixel packer
JP2019208715A (en) * 2018-06-01 2019-12-12 株式会社藤商事 Game machine

Also Published As

Publication number Publication date
JPH0697393B2 (en) 1994-11-30

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