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Questions - retro-computing

Database join in the '60s with tape / punch cards only?

We are a large company, selling frobnication services to tens of thousands of customers via phone calls. Orders get recorded on punch cards, featuring a customer ID a date the dollar amount of frobni...
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Latanius

mainframe

retro-computing

Votes: 0

Answers: 1

Latest Answer

In the 60's you would most likely You store your data in a Master-File sorted in Key sequence Sort the Punch-Cards to a temporary Disk file. Do a Master-File Update using the Temporary Disk file (tra...
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Bruce Martin

Linker Inserts Unnecessary Opcode Padding

I've recently come across a minor issue when linking multiple object files for a Motorola 68000 based system (SEGA Mega Drive). The problem is, when an input section for one object file ends and the n...
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Smokeysonic

c

assembly

linker

low-level

retro-computing

Votes: 0

Answers: 2

Latest Answer

The 68000 processor requires instructions to be aligned (and this requirement holds also for data). Despite of the CPU requirements (which are unskipable) the linker also uses a script in which the s...
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Luis Colorado

Is it possible to play PCM sound (.WAV) using 'Direct Mode' in DOS and display animation simultaneously?

I have this working code in order to play PCM sound (.WAV) using 'Direct Mode' in DOS: ASM code plays .WAV in DOS It works perfectly (including timing, etc.). However I'd like to improve this code so ...
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Fract

assembly

nasm

masm

tasm

retro-computing

Votes: 0

Answers: 0

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