1. An article of manufacture comprising: at least one computer usable medium having computer readable program code logic to manage memory access in an emulated processing environment, said computer readable program code logic when executing performing the following: requesting, by an emulated central processing unit (CPU) process executing on a processor having a weak memory consistency architecture, access to a unit of memory as part of a unit of operation; and managing, by the emulated CPU process, access to the unit of memory, wherein the managing forces a firm memory consistency, in which other emulated CPU processes cannot observe the unit of memory if it is being modified, and wherein the managing comprises at least one of: employing one or more memory access tests to determine if the unit of the memory is accessible, the one or more memory access tests including tests added to an existing architected access control block that includes an indication of which emulated CPU processes, if any, have read or write access to the unit of memory, and obtaining access to the requested unit of memory, in response to the employing indicating availability of the unit of memory; determining that the unit of memory is being held by another emulated CPU process and is inaccessible to the emulated CPU process at this time, and invoking an interrupt handler to request that the another emulated CPU process relinquish one or more rights held for the unit of memory to allow the emulated CPU process to obtain access to the unit of memory; and determining whether another emulated CPU process is requesting access to a unit of memory held by the requesting emulated CPU process, and nullifying the unit of operation, in response to the determining indicating that the another emulated CPU process is requesting access, said nullifying avoiding a deadlock.